Category: Most Asked Questions

Automation Testing Interview Questions with Answers

Question: 1. Why Automation Testing?

Answer:

Automation testing improves efficiency of checking out.
Reduced testing efforts and expenses.
Testing can be replicated throughout specific systems.
Gives correct consequences.
Usually used for huge programs with stringent deadlines.
Question: 2. When Will You Automate A Test?

Answer:

Automation in preferred in following instances

Repetitive Tasks
Smoke and Sanity Tests
Test with a couple of information set
Regression check cases
ETL Testing Interview Questions
Question: 3. Explain Load Testing On Websites?

Answer:

To get right of entry to a internet site, a user sends a “request” to that website’s server, and the server sends back a response within the form of the internet site you want to access. To load take a look at a internet site, nice guarantee engineers and automation engineers simply want to multiply the wide variety of responses despatched to simulate special site visitors loads. The web server’s reaction to the influx of virtual users can then be measured. This is used to determine overall performance problems and server potential.

Question: 4. What Are The Features And Benefits Of Quick Test Pro(qtp)?

Answer:

The following are the capabilities and advantages of Quick Test Pro:

It is a key phrase driven testing
It is appropriate for net based totally application for each client and server
It has higher error coping with mechanism
Data driven trying out functions are wonderful
It has file and play characteristic
The display screen shots can be recorded
Run time facts table can be used for persisting values
ETL Testing Tutorial
Question: 5. When You Will Not Automate Testing?

Answer:

One ought to now not automate in following cases :

When the Application Under Test changes often
One time test cases
Adhoc – Random trying out
Agile Testing Interview Questions
Question: 6. Are You Familiar With Selenium? If Yes, What Is It?

Answer:

Selenium is a set of software trying out and automation tools built for internet programs. Using Selenium, software tests can be written in languages like Java, Perl, Python, and greater. The framework itself can be deployed at the 3 foremost working systems: Windows, Mac, and Linux.

Question: 7. What Is Build Verification Testing, Bvt?

Answer:

Build Verification Testing is a set of tests that execute on every newly build of merchandise for verification wherein the construct is testable previous to the discharge of build into the hands of the take a look at group. The most important circulate capability of the application software is examined using BVT. BVT we could the developers recognize if any extreme problems exist with the build. They store the test group time and frustration by means of warding off the test of an volatile construct.

Agile Testing Tutorial Manual Testing Interview Questions
Question: 8. What Are The Steps Involved In The Automation Process ?

Answer:

In the automation process, steps involved are

Selecting the Test tool
Define scope of automation
Planning, layout and development
Test execution
Maintenance
Question: 9. Explain About Basics Of Rational Robot – Ibm Test Automation Tool?

Answer:

Rational Robot is an automated checking out device for practical and regression testing for automating Windows, Java, IE and ERP programs which run on Windows platform. The take a look at instances for not unusual objects together with lists, bitmaps, and menus are provided by using Rational Robot. It also presents specialized check cases for items the ones are precise for improvement environment. The gear like Relational Test Manager, Rational Clear Quest and Requisite Pro are integrated in the Rational Unified Processor for Change Management, Requirement Traceability and Defect Tracking. It additionally helps UI technologies such as VS.NET controls, Web, Java, Oracle Forms, Borland Delphi and Sybase Power Builder packages.

Mobile Testing Interview Questions
Question: 10. What Are The Points That Are Covered While Planning Phase Of Automation ?

Answer:

During planning segment of automation matters which has to be taken in problem are

Selection the “proper” Automation device
Selection Automation Framework if any
List of In scope and out of scope items for automation
Test Environment setup
Preparing Grant Chart of Project timelines for check script development & execution.
Identify Test Deliverables
Mobile Testing Tutorial
Question: eleven. Can You List Some Other Automation Testing Tools That You Are Familiar With?

Answer:

Besides Selenium, there may be Load Runner, Sahi, Silk Test, QTP, Jmeter, WinRunner, and so forth.

Database Testing Interview Questions
Question: 12. Stop Automating The Tests Which Run Once?

Answer:

Ensure that positive check cases is probably going for walks as soon as and not blanketed inside the regression trying out. Avoid automating such test modules.

ETL Testing Interview Questions
Question: 13. In What Condition We Cannot Use Automation Testing For Agile Method ?

Answer:

Automation checking out is not beneficial for agile strategies in following situations :

When Agile testing continually ask for adjustments in necessities
When Exhaustive stage of documentation is required in Agile
Only appropriate for those regression exams at some point of agile testing like continuos integration
Database Testing Tutorial
Question: 14. What Kind Of Tests Would You Automate?

Answer:

Load tests, sanity assessments, and regression tests are the sorts of checks a first-rate engineer might usually automate.

Question: 15. What Are The Risks Associated In Automation Testing?

Answer:

The risks of Automation Testing are:

Do you have got skilled resources? The automation testing needs resources with a few know-how approximately programming. Focus on the sources. Identify whether the resources have right knowledge for automation checking out. Are they succesful to conform without problems to the brand new technology? These measures are to be well assessed for constructing an automation trying out team.
The initial value for automation is high. The preliminary price for automation is simply too high for initial setup. It fees computerized tool purchase, education advert preservation of the check scripts. The unsatisfied customer base is excessive for automation checking out their products. It must be ensured that the price compensates the testing outcomes.
If UI isn’t fixed, do no longer factor about automation: Prior to automating the person interface, it have to strongly be determined that, whether the UI is changing appreciably or the price of the automated script upkeep is high or not.
Make certain that the application is solid enough: To automate the early improvement cycle except or otherwise it’s miles Agile environment, would now not be a terrific concept. It costs script preservation price very excessive.
Stop automating the assessments which run once: Ensure that certain test instances might be going for walks once and now not protected in the regression checking out. Avoid automating such check modules.
White Box Testing Interview Questions
Question: 16. What Is Tree View In Automation Testing?

Answer:

A tree view in Quick Test Pro has statements in keywords or in tree structure. The testing method inside the key-word created and regarded inside the keyword drive modular layout.

Software trying out Tutorial
Question: 17. What Are The Primary Features Of Good Automation Tool ?

Answer:

Test Environment support and easy to use.
Good debugging facility.
Robust item identification.
Object and Image checking out abilities.
Object identity.
Testing of database.
Support more than one frameworks.
Software checking out Interview Questions
Question: 18. Does Automation Testing Have Any Disadvantages?

Answer:

Designing the equipment and tests to run software via takes lots of guide, human effort, although there are frameworks and exams geared up made for engineers to use. Even with automatic testing, human blunders remains a component – gear can be buggy, inefficient, expensive, and every now and then even technologically restrained in what sorts of assessments they could run on their own.

Agile Testing Interview Questions
Question: 19. What Are The Pre-requisites To Start Automation Testing?

Answer:

The first step is to segregate the extraordinary test instances which can be to be automatic, accompanied by means of preparing check records as according to the desires of the check cases. Reusable functions want to be written which are often used in the ones take a look at cases. Later check scripts are organized with the aid of using reusable capabilities and follow loops and situations anyplace important.

In a nut shell, the following are the pre-standards for starting automation trying out:

Build should usually be solid
Get the functionalities to copy
Filtering the automatic check cases
SAP Testing Tutorial
Question: 20. What Are The Types Of Framework Used In Software Automation Testing ?

Answer:

In software automation checking out 4 styles of framework used are

Data driven automation framework
Keyword pushed automati4on framework
Modular automation framework
Hybrid automation framework
SAP Testing Interview Questions
Question: 21. What Are The Differences Between Open Source Tools, Vendor Tools, And In-house Tools?

Answer:

Open supply tools are unfastened to use frameworks and packages. Engineers build the tool, and have the source code available for free on the net for different engineers to apply. Vendor gear are advanced by means of agencies that include licenses to apply, and often value money. Because they may be evolved by using an out of doors supply, technical aid is regularly to be had for use. Example seller tools include WinRunner, SilkTest, Rational Robot, QA Director, QTP, LR, QC, RFT, and RPT. An in-house device is a device that a business enterprise builds for their own use, rather than buying dealer equipment or using open supply equipment.

Question: 22. On What Basis You Can Map The Success Of Automation Testing?

Answer:

On foundation of following standards the success of automation testing can be mapped

Defect Detection Ratio
Automation execution time and time financial savings to launch the product
Reduction in Labour & different fees
Security Testing Tutorial
Question: 23. Explain Load Testing On Websites.?

Answer:

To get right of entry to a website, a person sends a “request” to that internet site’s server, and the server sends again a reaction in the shape of the internet site you want to access. To load take a look at a internet site, high-quality assurance engineers and automation engineers simply need to multiply the range of responses sent to simulate unique traffic loads. The web server’s response to the influx of digital customers can then be measured. This is used to decide overall performance issues and server capacity.

API testing Interview Questions
Question: 24. What Kinds Of Tests Can Be Run With The Selenium Framework?

Answer:

Selenium may be used for load checking out, regression testing, and purposeful checking out of internet packages.

 

 

Manual Testing Interview Questions
Question: 25. Explain How Qtp Identifies Objects?

Answer:

For every item class that QTP identifies, it has a set of properties saved. These encompass mandatory properties, which is essentially a description of any given object, which assessments if it’s a child or parent item as properly. Next are the assistive properties, which QTP accommodations  to only if the required residences are insufficient at figuring out the object. If all else fails, QTP resorts, eventually, to its ordinal identifier.

Penetration Testing Tutorial
Question: 26. List The Five Essential Types Of Test Steps?

Answer:

Test object
Functions
Utility
Comment
Programming logic
Security Testing Interview Questions
Question: 27. What Environment Does Qtp Run In?

Answer:

Windows most effective.

Mobile Testing Interview Questions
Question: 28. What Are Some Test Assets And Related Extensions Of Qtp?

Answer:

check batch runner .Mtb
consequences .Xml
test report .Mts
recovery situation .Qrs
shared item repository .Tsr
nearby item repository .Mtr
function library .Qfl
QUnit Testing Tutorial
Question: 29. Can You List Some Technologies That Support Qtp?

Answer:

.NET
Delphi
Web
Java (Core)
Java  (Advanced)
Windows Mobile
Oracle
SAP
WPF
Siebel
PeopleSoft
Flex
Silverlight
Test Cases Interview Questions
Question: 30. Does The Selenium Ide Have Any Drawbacks?

Answer:

The Selenium IDE lacks conditional statements, logging and reporting capability, loops, database testing, and it cannot cope with exceptions or routinely re-run exams which have failed. It can also’t take screenshots. Another downside is that it’s Firefox handiest. If the Selenium IDE is used within the Firefox browser’s aspect-bar, then the exceptional engineer can’t use  it to document any actions undertaken through a user in a separate window.

Question: 31. What Is The Selenium Ide And What Is It Used For?

Answer:

The Selenium IDE is an upload-on for Firefox that consists of severa functions for quality warranty and engineers to record and play returned browser-based moves, inclusive of typing and mouse clicks. Some of these precise features are: debugging functions, record/playback capacity, person upload-on functionality. Users can accelerate and gradual down executions with the usage of a built-in slider. They also can use the Selenium IDE as a aspect-bar, or as a separate pop-up window.

A/B Testing Tutorial
Question: 32. What Are The Different Types Of Scripting Techniques For Automation Testing?

Answer:

Test automation scripting techniques encompass key and statistics pushed techniques, shared, structured, and linear.
Check out this course on software program trying out fundamentals for a better study the basics of pleasant engineering and automation.

Penetration Testing Interview Questions
Question: 33. What Is The Selenium Webdriver?

Answer:

The Selenium WebDriver is used for automating checks for websites.

Database Testing Interview Questions
Question: 34. How Do You Choose Which Automation Tool Is Best For Your Specific Scenario?

Answer:

In order to pick the proper automation testing tool, you need to don’t forget:

the scope of the task
the hindrance of the device
how a great deal the device costs
the tool’s usability and convenience
the trying out environment
compatibility
Project control and properly judgment are important capabilities in software testing and great guarantee positions. Check out this route on IT  venture managementto learn how to make precise, effective decisions to your group.

Question: 35. Is Automation Testing A Complete Replacement For Manual Software Testing?

Answer:

No. Proper automation requires as little intervention from human beings as possible, for the reason that gear used are built to run tests after they’re setup. As handy as this is probably, it have to no longer be a entire replacement for guide checking out – only for repetitive obligations like load testing, in which thousands of virtual customers are required.  Engineers have to not automate things like take a look at scripts, if the ones scripts can simplest be anticipated to run now and again, nor must they automate code opinions, or bug trying out for brand spanking new builds of software that might require human interaction to locate particular problems. Large-scale, repetitive responsibilities are better match for automation.

Question: 36. Explain Some Disadvantages To Manual Software Testing?

Answer:

Manual software program testing takes massive amounts of time and sources, each human and gadget. It’s a potentially hard method that can end up costing more money and time for the enterprise than if the method become absolutely automated, because of employee fatigue and its effects: inaccuracy, ignored issues, loss of clarity.

White Box Testing Interview Questions

Astronomy Interview Questions with Answers

Question: 1. How Far Away From Earth, Is Space?

Answer:

In reality, area is stated to begin just 100km above the floor of the earth so in case you have been in a rocket then you might now not want to journey for too lengthy to hit space.

When you appearance in the sky to the moon as an instance you virtually simplest want to tour a tiny, tiny fraction of the manner to the moon to enter space.

Question: 2. How Does Gravity Affect Life On Pluto?

Answer:

Well, there may be a lot less gravity no Pluto than there is on the earth Earth.

Therefore, it is less difficult to jump for instance a jump could take you a great deal higher. Your body could additionally now not need the robustness that it wishes to deal with gravity right here pushing down in your organs and so on, so may want to be less sturdy.

Chemical Interview Questions
Question: three. How Do Clouds Form?

Answer:

Clouds are formed as part of the water cycle. Effectively, heat air rises. Indeed, water vapor rises, as it’s far lighter than air.

However, because it rises thru the sky, better and better up, the air is less warm.

This reasons the water vapor to condense and it turns to liquid droplets. This is what reasons a cloud to form and condense.

When the density is high sufficient, the water escapes from the cloud and falls to earth as a cloud.

Question: four. How Did The Moon Form?

Answer:

Theories abound. The most broadly regular notion at present is that some big effect on the earth in its very formative days was so violent that it sent a chunk of earth rock flying out into space, and this became the moon. Certainly if authentic, this turned into very fortuitous for life on the earth in the long run, because the moon has many consequences on the planet which are useful for existence, e.G. Tides.

Question: 5. How Can Space Expand Faster Than The Speed Of Light?

Answer:

Although not anything can journey faster than the velocity of mild, when area is expanding itself then things can pass similarly than light does in a length this is as it is not a particle this is travelling it’s far the material of area itself.

Space can enlarge at a price that has no longer been decided however will not expanded to be bound by the motion of light or debris, so if the cloth of space itself expands then things can efficaciously be moved other than every other at quicker than light velocity with out themselves exceeding the restrict.

Science Interview Questions
Question: 6. How Big Is Venus?

Answer:

In terms of size, Venus is the maximum like Earth, even though not in phrases of planetary conditions, weather, or hospitability for life.

Venus is 95% the scale of earth. In phrases of the density of the planet, it is very close to earth. It is 30% towards the Sun than the earth is. It is also exceedingly warm around 880 degrees Fahrenheit at times, and sulphuric acid rain. The planet has a runaway greenhouse impact problem.

Question: 7. How Big Is The Universe?

Answer:

There is an side to what we’re capable of see in the universe. The most distant galaxies we are able to now see are 10 or 12 billion lightyears away. We ought to by no means see a galaxy that is farther away in light tour time than the universe is vintage, e.G. Expected 14 billion years. Thus, we’re surrounded with the aid of a “horizon” that we can not look past that. This horizon describes the seen universe-a region a few 28 billion mild years in diameter.

BioChemistry Interview Questions
Question: 8. Does Time Stop At An Event Horizon?

Answer:

You might also have study that as you technique the occasion horizon of a black hole, time will forestall for you.

Indeed, for any observers, it will appear which you pass slower and slower and by no means pretty reach it (ignoring the troubles which you might be beaten to demise by the gravity!) However, in case your watch have been still to work, you will appearance down and understand time to be passing as ordinary.

It is due to the mammoth gravity that the light you emit takes longer and longer to reach the outside observer.

Question: 9. Does Non-carbon Based Life Exist Somewhere In The Universe?

Answer:

No you can actually say no in answer to this, due to the fact we do no longer recognize what else is offered.

However, it appears in all likelihood that because of its chemical homes that existence someplace else would need to be primarily based on carbon if it became of any length, although we can not say for positive.

There are not that many elements that appear to have the ability that carbon does, the stability and abundance… But it is feasible that some thing like silicon could perhaps be a candidate for life bureaucracy someplace else? for very simple existence paperwork there is probably a bigger range of candidate factors.

Human Physiology Interview Questions
Question: 10. Do Galaxies Interact?

Answer:

Of course we don’t have any direct evidence of galaxies interacting but it does appear that they could and do, and are at this very second, interacting.

Usually a violent and lively affair, galaxies interacting will reason a great deal destruction of present fabric after which bring about a product section of a great deal megastar formation and pastime because the repercussions are felt all through the galaxy.

Question: eleven. Do Black Holes Really Exist?

Answer:

As far as we are able to tell, they do exist, yes. Whilst no person has without delay visible a black hollow, they are of course dark gadgets so mild cannot be visible? the effects of them can be seen.

Specifically the big gravitational subject and its impact may be found at the centre of galaxies wherein the orbits of stars and rely do all forms of crazy things from the acute gravitational pulls, so items that behave always with the conduct of black holes at the centre of galaxies have had their predictions showed, yes.

Environmental Science Interview Questions
Question: 12. Did Water Come From Comets?

Answer:

One exciting idea is that maximum of the water came to earth from comets. The idea is that hundreds of small comets, approximately the scale of small homes, come into the surroundings every day.

They vaporize in the ecosystem, leaving their water behind.

The concept is that 10 of these very minute for billions of years over the course of the history of the planet might result in absolutely all the water in the oceans and atmosphere!

This would be big, as it might provide an alternative reason for the same old idea that the water came from gaseous emissions from the crust of the Earth within the early days post its initial formation…

Chemical Interview Questions
Question: 13. Describe The Venus Atmosphere?

Answer:

Venus has a totally peculiar atmosphere, as compared with the same sized planet next to it Earth.

The ecosystem is truely all carbon dioxide within the area of nine%. The rest is specifically made from nitrogen. There is thick cloud fabricated from no longer water but acids like sulphuric acid nasty stuff indeed.

The stress is large inside the environment of planet Venus indeed Venus could crush us, as it’s far 90 instances that of earth!

The temperature on Venus is likewise large, around 500 Celsius even a few metals could be liquid on the surface of Venus!

Question: 14. How Far From Earth, Is The Moon?

Answer:

The Mean Distance of Moon from Earth is 238,712 miles (384,four hundred km).
The finest distance is 252,586 miles.
The shortest distance is 221,331 miles.

Interestingly, the Moon used to be a great deal toward the earth, and can have had a pivotal function in the evolution of existence on this planet and the whole records of the planet before us, that caused our creation.

The implication of this is also that the Moon will not continually be with us the Earth is slowly dropping its grip at the Moon and at some degree long, in the destiny, the Moon will without a doubt get away Earth’s gravitational pull and out of Earth’s gravitational grasp.

Question: 15. How Fast Is The Solar Wind?

Answer:

A very thrilling questions this approximately the speed of the sun wind. This relies upon on conditions in and across the sun and how particularly energetic it’s far at the time and consequently varies greatly. It movements among round 2 hundred to 900 kilometers in line with second.

Material Science Interview Questions
Question: sixteen. How Have Some Stars Had Time To Die Since The Universe Began?

Answer:

This often confuses humans that there are stars that have been via their entire existence cycle yet there are numerous stars nevertheless forming.

Well part of the solution is that a large big name burns quicker and dies faster so may have its complete

life cycle in the fraction of the time a celebrity as though our personal Sun does that’s perhaps mid sized.

Therefore, it would take a billion years for a large superstar to undergo its lifecycle and if stars started to form around one billion years after the large bang, then after 23 billion years stars could have burnt out, hence they may have died already.

Question: 17. How Is Saturn Like Earth?

Answer:

Saturn is like earth within the feel that it’s far one of the planets of the solar machine.

Earth is also a planet. They additionally each are alike in that they cross around the sun.

Also they both have moons, even though earth has just one and Saturn has so many who we still do not know what they all are and increasingly more are being determined round Saturn all of the time.

Therefore, in those ways they’re similar.

Soil Science Interview Questions
Question: 18. How Is Venus Different To Earth?

Answer:

Venus is specific to planet earth in pretty profound methods. We cognizance, being alive, on the reality that Venus should truely now not assist life. This focuses us in on some big variations among the 2 planets.

First, up, Venus rotates extremely slowly as compared to earth.

It also has a magnetic area that is almost nonexistent not true for existence! Of route, the temperature way it’s so dry and there’s hardly ever any water.

There is excessive pressure at the floor and temperature, and the surroundings is very dense with a run away greenhouse impact.

Science Interview Questions
Question: 19. How Is Venus Like Earth?

Answer:

Venus is like Earth in some ways, mainly cosmetic, but very exclusive in others.

However till we studied Venus in popular it changed into thought to be a sister planet but the fact may be very one-of-a-kind. In phrases of similarities are the 2 fundamental statistics:

It is the closest to Earth in the sun device, very close certainly in planetary phrases
The 2d aspect is that it’s miles a small rocky planet, of just about the same size as earth
However as you will see within the differences to Earth question I just answered, the variations among the 2 planets Earth and Venus are a lot extra profound than the similarities.

Question: 20. How Long Is A Day On Saturn?

Answer:

A day on Saturn is hard to degree, but scientists now trust that the cost of an afternoon on Saturn in phrases of duration is round 10 hours and as such being ten hours as compared to our 24 it’s far less hours than a day on earth.

Physics Interview Questions
Question: 21. How Long Is A Year On Saturn?

Answer:

Saturn is much similarly from the Sun than the Earth is. Therefore, for it to finish its orbit across the solar as soon as takes a good deal longer than for Earth because of the a whole lot wider circle it has to head round in order orbiting (properly, ellipse).

Therefore, the period of a yr on Saturn is about 29.Five Earth years.

So if you want to feel a lot more youthful and be a child again, outline your age in Saturn years rather than Earth years!

Question: 22. How Long Is It Until Our Solar System Ceases To Exist?

Answer:

It is concept that the solar is approaching roughly the halfway point of its existence.

In addition, the sun system the device of the sun lives and dies with its celebrity, at the least in turns of being energetic, because it’s miles the heat and energy from the sun that sustains the reactions on the planets which might be within the reach of its mild and gravitational force.

The sun has several billion years to go yet till it cools and expands, so we aren’t any immediate hazard from the sun in truth, we are able to guarantee that by the time the solar is large enough, nothing we recognize as human will exist.

Question: 23. How Many Black Holes Are There?

Answer:

We do not understand for certain, 100%, that there are any black holes. However, beyond reasonable doubt, whilst the compact object in an Xray binary device is shown to be more big than about 3 times the mass of the Sun, then this compact object is a black hole.

With regard how many there are in overall, it’s far notion that many, possibly maximum? galaxies comprise a large black hole in their centers. If this is the case, then there can be almost as many black holes as galaxies a first-rate quantity!

Chemistry Interview Questions
Question: 24. How Many Earths Can Fit Into Jupiter S Great Red Spot?

Answer:

The first-rate pink spot is a hurricane on Jupiter that has been raging for round 300 years or so that is when it became first spotted.

That is quite a typhoon genuinely isn’t it, and we do no longer recognize whilst it’ll die out. It is also alternatively huge as the question implies.

The solution is that it’s miles estimated something within the region of two earths would suit into the tremendous red spot on my own, which gives a few idea of the huge scale of the gas giant this is Jupiter in comparison to the smaller ball of rock that is planet Earth.

BioChemistry Interview Questions
Question: 25. How Many Moons Do Ceres Have?

Answer:

Ceres is a big asteroid that has just come to be a wannabe planet within the new solar gadget, unbelievably, or as a minimum is a pluton.

Question: 26. How Many Moons Do Mars Have?

Answer:

With all the focal point on the crimson planet and existence, and the meant channels that have been the sign of more terrestrial lifestyles in previous centuries, people forget about the moons of this neighbor planet, the Red Planet.

However, Mars has two moons.

These are referred to as Phobos and Deimos respectively, and are minor satellites, so referred to as. They are small in comparison to the Earth’s moon, that is tons large and more considerable.

Nuclear physics Interview Questions
Question: 27. How Many Moons Does Neptune Have?

Answer:

Neptune is the planet with the fourth most moons in the solar system. The planet has thirteen moons.

The planets with more moons are Jupiter, Saturn, and Uranus, in descending order of variety of moons.

Human Physiology Interview Questions
Question: 28. How Many Moons Does Saturn Have?

Answer:

Saturn has forty six recognised moons (as of 4th May 2005 when 12 extra have been discovered).

These moons vary in size significantly, from the biggest moon Titan (larger than Mercury and Pluto), to other greater arguable moons which might be surely just massive rocks. Of the 12 most lately found, a few are most effective 3 7 km extensive, and take around 2 years to orbit the planet.

The number of moons isn’t always solid, and greater moons are being located all of the time as detection techniques grow to be more state-of-the-art.

Saturn is the planet with the second largest range of moons, with Jupiter catalogued as having the maximum.

Question: 29. How Many Moons Does Uranus Have?

Answer:

Uranus has 27 moons. This means it has greater moons than some other planet within the sun gadget, apart from Jupiter and Saturn.

However, it has greater than two times the variety of moons of the following planet inside the listing Neptune.

Mathematics Interview Questions
Question: 30. How Many Planets Are In The New Solar System?

Answer:

At the time of writing the new solar system has not been agreed formally, however it seems that there may be 12 planets in the new sun device, having gone up from nine formerly.

The new additions would be Ceres, Charon and an obscurely named object far far from the sun called 2003 UB319 honestly wishes to have a catchier call assigned to it!

Question: 31. How Many Planets Are Now In The Solar System?

Answer:

There are actually 8 planets in the sun device, as Pluto has been demoted to a planetoid at the side of its moon Charon that has been promoted to that reputation at the side of the most important asteroid called Ceres.

Question: 32. How Many Stars Are There In The Whole Universe?

Answer:

We can at least say the quantity is so large that we can’t recognise it? given that there are billions of stars in each galaxy and there can be for all we understand trillions of galaxies then the quantity is truly collosal.

It is also of route in a steady state of flux as stars are born and other stars die or collide and exchange nation consequently the wide variety is likewise ever changing.

Plant Physiology Interview Questions
Question: 33. How Old Is Our Earth?

Answer:

Of direction, nobody knows precisely how old the earth is, but technology can provide what it believes to be correct estimates of the age of the earth the use of numerous relationship techniques.

At present, the generally well-known estimate is that the Earth is between a few four.Five to 4.6 billion years antique. This is based totally partially on radiometric relationship strategies and partly on extrapolation lower back in time and searching at the universe round us.

Environmental Science Interview Questions
Question: 34. How Old Is This Universe?

Answer:

The age of the earth soon positioned paid to that and recently sophisticated medical techniques have pointed at a much greater age.

Some have notion the query incoherent or as a minimum that its presupposition need to be stated in reality this is, that the universe has a beginning and therefore factor in which it got here into life.

However, there appears to be robust evidence that the universe has no longer always existed and therefore that is a coherent query.

We need to mention that if the big bang is authentic, we can cross lower back handiest to mention some thing like ‘when turned into the big bang’ as direct get admission to to life of the universe earlier than then can be something we will never empirically have relying on the definition of the large bang and what may have gone earlier than.

Typical estimates of the age of the universe are around 14 18 billion years, based totally on globular clusters.

Question: 35. How Was The Moon Formed?

Answer:

How the moon formed is a great question. Over time, the theories have abounded as to how the moon became formed, and what it consists of.

The present day concept that seems to in shape the statistics the quality is that it’s miles virtually very vintage earth rocks. At some stage a big collision took a big chunk of rock out of the earth and flung it out into area this rock have become the moon.

If a human turned into to glide in space and he look up might there be different planets on top of the planets in out galaxy. He might not be able to see the other planets without a telescope from space both, or at least not in any detail.

Question: 36. If Gravity Only Attracts Mass And If Light Does Not Have Mass Why Does It Appear To Bend When Passing A Planet?

Answer:

Under fashionable relativity, it’s miles visible that gravity can literally warp spacetime round it.

Therefore, some thing that passes via the gravitational warping will itself be stimulated.

Around a big object like the sun, there may be a slight warping of spacetime, and consequently the entirety that passes through this is affected.

This is what reasons the mild bending, you be aware in mild waves even though they can’t have mass in the trendy version (because it takes limitless electricity to accelerate whatever that has mass to light velocity)

Material Science Interview Questions
Question: 37. Is Pluto Really A Planet?

Answer:

The motivation for this has been the multiplied knowledge of our solar gadget and the massive number of large rocks that have been found at a more distance from the Sun than Pluto, which orbits it? in truth some large than Pluto has or of similar length have been found.

This has brought about many calling for our expertise of a true planet to change or for Pluto to come to be a planetessimal or some different nonplanetary frame.

However due to convention through the years and its repute it seems set for Pluto to live, but it is worth noting that there are many similar sized gadgets in all likelihood also orbiting the sun at a far greater distance within the Kuiper belt.

Question: 38. Is The Gravitational Pull On An Object Equalized If The Object Is At The Center Of A Planet, I.E. Surrounded By The Mass Of The Planet, Which Is Creating The Gravity?

Answer:

The gravitational pull on this instance will be the identical from all guidelines, so the net impact would be no motion.

Of direction, you’ll must be completely encircled by using the massive objects like in the centre of a hoop for instance.

Question: 39. Is The Moon Escaping The Earth?

Answer:

However, it is feasible that this will attain a steady kingdom, when the pull of the moon is less on earth it’ll gradual down or stop the fee at which the earth is slowing down its spin from the friction induced. This in flip will location a extra pull lower back at the moon and as a result it is able to reach a constant distance from the earth.

Question: 40. Is There Water In Moon Rock?

Answer:

No! The checks on moon rock that has both reached earth, from meteorites or from rock brought back with the aid of astronauts, have delivered a new meaning to the word dry!

Any water there was could have escaped long, long ago. This has affected the range of minerals feasible on the moon around a hundred compared to the hundreds on the planet in which water has enabled a good deal more complexity.

Soil Science Interview Questions
Question: forty one. What Are Asteroids Like?

Answer:

Asteroids have numerous standard functions of hobby.

Firstly, their formation they all constitute material that became not used within the preliminary formation of the solar gadget.
For anything motive hazard and role they did now not shape planets, and consequently were left scattered.
They do no longer constitute a whole lot cloth it is concept that if they have been all joined collectively the mass could handiest be that of half of of our Moon!
Most asteroids are in a ‘belt’ between Mars and Jupiter.
Some asteroids even have their own mini moons as an example Ida and Dactyl.
Question: 42. What Are Gamma Ray Bursts?

Answer:

Gamma ray bursts are one of the cutting-edge mysteries that are still to be explained.

If we should see gamma ray wavelengths, we’d see the sky glow and lots of this is from known assets like pulsars, quasars and so forth. However, on occasion we’ve directly discovered unexpected pulses of gamma rays for some seconds at a time.

These pulses pour out big electricity. The mystery is in regards the supply of these gamma rays.

Physics Interview Questions

Eclipse Interview Questions And Answers

Question: 1. Explain What Is Ide? Name Some Java Ide?

Answer:

IDE stands for Integrated Development Environment.

Some of the Java IDE are:

    Eclipse
    Netbeans
    RAD ( Rational Application Developer )
    WSAD (Websphere Application Developer )
Question: 2. Define Eclipse? What Are The Key Eclipse Projects And Technologies?

Answer:

Eclipse is used in several distinct regions, e.G. As a improvement platform for Android or Java applications. It is likewise used for handling and deploying software across the whole software program lifecycle.
The key Eclipse tasks and technologies are;

    Eclipse platform
    Eclipse undertaking
    JDT or Java Development Tools
    Plug-in Development Tools (PDE)
Adv Java Interview Questions
Question: three. Explain What Are Activities You Can Do In Eclipse?

Answer:

In Eclipse, you could do following activities:

    Create universal initiatives
    Edit documents in a everyday text editor
    Share files and undertaking in a CVS (Concurrent Version System) server.
Question: four. What Are The Steps To Change The Jdk Compliance Level?

Answer:

The steps to alternate the JDK compliance level:

    Go to Windows
    Select Preferences
    Select Java – Compiler
    Select Java Compliance Level
Adv Java Tutorial
Question: 5. Explain How Can You Generate Javadoc Documentation For Your Code?

Answer:

To generate JavaDoc documentation on your code, In Eclipse,

you need to observe the subsequent steps:

    Go to File menu
    Select Export
    Select Java
    JavaDoc
    Choose the projects, other properties and output listing for which JavaDoc is to be created
    Click Finish
Core Java Interview Questions
Question: 6. Explain What Are Extension Points?

Answer:

Whenever a plug-in desires to allow different plug-ins to increase or customize portions of its functionality, it will declare an extension point.

Question: 7. Explain How To Config A Plugin To Start Automatically During Platform Starts Up?

Answer:

To config a plugin to start automatically for the duration of platform starts offevolved up, outline the ‘Eclipse-AutoStart=authentic’ header in Manifest file.

Core Java Tutorial MySQL Interview Questions
Question: eight. Explain What Is An Eclipse Modeling Framework?

Answer:

An eclipse modeling framework is a Java/XML framework. It is used for producing equipment and other applications based totally on easy elegance models.

Question: 9. Explain How Can You Hide Menu Contributed By Other Plugins?

Answer:

To disguise menu contributed through different plugins, you may use org.Eclipse.Ui.Activities extension.

JDBC Interview Questions
Question: 10. Mention What Are The Differences Between ‘import-bundle’ And ‘require-package deal’ In Eclipse?

Answer:

‘Import-Package’ is used to claim a dependency on a bundle without knowing which actual bundle will provide it
‘Require-Bundle’ specifies your plugin challenge’s dependency on other unique package deal and variations explicitly.
MySQL Tutorial
Question: eleven. Explain What Is Shell And What Is Display?

Answer:

The Shell magnificence represents windows while the Display magnificence represents the GUI manner(thread).

Veritas Netbackup Interview Questions
Question: 12. Explain What Is Included In A Rich Client Platform?

Answer:

In a wealthy purchaser platform,

it includes:

    Eclipse Runtime
    JFace
    Workbench
    SWt
Adv Java Interview Questions
Question: 13. Mention What Is The Class Path Of A Plugin In Eclipse?

Answer:

The classpath of a plugin is “OSGI determine magnificence loader”. In OSGI, all magnificence loaders have a commonplace figure class loader.

JDBC Tutorial
Question: 14. Explain How Can You Add A Library To The Class Path Of A Plug-in?

Answer:

To get right of entry to precise library from a plugin, the library needs to be added to the classpath of a plug-in.  There are 4 approaches of doing this.

    The JAR can be delivered to the boot classpath
    The JAR may be introduced to the declared libraries for a plug-in
    Create a brand new plug-in that can be delivered to the library
    By the use of OSGI discern loader.
Question: 15. Explain How To Access Ui Objects From A Non-ui Thread?

Answer:

To access UI objects from a non-ui thread, use command
Display.GetDefault().AsyncExec(new Runnable()…)
This will purpose the run() approach of the runnable to be invoked with the aid of the user-interface thread at the subsequent reasonable possibility.

Java-Multithreading Interview Questions
Question: sixteen. Explain How To Fire A Key Event In The Test Code To Make The Program Act As If A User Pressed A Key?

Answer:

To fire a key occasion in check code to make the program act as if a user pressed a key.

You need to comply with  ways.

    NotifyListeners(…) or
    publish(Event)
Hibernate Tutorial

Electrical Machines Interview Questions And Answers

Question: 1. What Is The General System Requirements Of Alternator?

Answer:

For the technology of emf, there have to be two simple structures.

Magnetic subject system to produce the magnetic field
Armature system which homes the conductors on which the EMF is to be prompted.
Question: 2. Will The Alternators Have Rotating Armature System Or Stationary Armature System?

Answer:

Generally in alternators, the armature is desk bound and the sphere rotates. Small low-voltage alternators regularly have a rotating armature and a stationary area winding.But in massive alternators rotating armature area type is used.

Electrical and Electronics Engineering Interview Questions
Question: 3. What Are The Advantages Of Stationary Armature And Rotating Field System?

Answer:

The desk bound armature coils may be insulated without difficulty.
Higher peripheral speed may be achieved within the rotor.
Cooling of the winding is greater efficient.
Only  slip jewelry are required to give DC supply to the sphere machine
Output modern can be easily furnished to the load circuit. Slip-earrings and brushes are not necessary.
Question: 4. What Is Meant By Stator? What Is Meant By Rotor?

Answer:

In any electrical machine ( AC/DC motor or generator) the stationary member is called as stator. Similarly in all machines the rotating member is called rotor.

Control Systems Tutorial
Question: 5. What Are The Advantages Of Three Phase Motor Over Single Phase Motor?

Answer:

Three phase automobiles are having

Higher starting torques
Improved speed regulation
Less vibration
Quieter operation
compared to the single section motors.

Electrical Engineering Interview Questions
Question: 6. What Is Basic Principle Of Operation Of Alternators/dc Generators?

Answer:

They are working at the fundamental principle based on Faraday’s Laws of Electromagnetic Induction.

This regulation states that, When a modern sporting conductor moves in magnetic discipline, it induces an EMF.

Question: 7. How To Minimize The Eddy Current Losses?

Answer:

When the center is laminated and insulated from each other with paper or varnish the eddy cutting-edge loss is minimized.

Network Administrator Interview Questions
Question: eight. What Is Meant By Turbo Alternators?

Answer:

Turbo alternators are high pace alternators. Because of excessive speed of rotation, the rotor diameter is decreased and the axial duration is improved. Two or 4 poles are commonly used and steam mills are used as high movers.

Question: nine. What Are The Various Types Of Rotors Used In The Alternators?

Answer:

Salient pole rotor
Non- salient pole rotor and Cylindrical rotor
Control Systems-Electrical Engineering Interview Questions
Question: 10. Define Pole Pitch?

Answer:

The distance between the centres of  adjoining poles is called pole pitch. One pole pitch is equals to one hundred eighty electrical tiers. It is likewise defined as the quantity of slots per pole.

Question: eleven. Define Coil Span?

Answer:

The distance among the 2 coil aspects of a coil is called as coil span. It can be expressed in electric stages or in wide variety of slots.

Linear included circuit Interview Questions
Question: 12. What Is Meant By Full Pitched Winding?

Answer:

If the coil span is same to pole pitch, the winding is referred to as as complete pitched winding.

Electrical and Electronics Engineering Interview Questions
Question: 13. What Is Meant By Short Pitched Winding?

Answer:

If the coil span is less than the pole pitch, the winding is known as as shot-pitched winding. It is also called brief-chorded winding.

Question: 14. What Are The Advantages And Disadvantages Of Short-pitched Winding?

Answer:

The advantages are:

They save copper for end connections
They improve the waveform of the generated EMF.
The generated EMF may be made to approximate to a sine wave more easily and the distorting harmonics can be decreased.
The negative aspects are:

The overall voltage around the coils is a few what decreased. Because the voltage brought on in the  coil sides are barely out of segment.
Question: 15. Why Is The Efficiency Of A Three-section Induction Motor Is Less Than That Of A Three-section Transformer?

Answer:

Three segment Induction motor is not anything however a rotating transformer.

Due to rotating nature, there are friction and windage losses associated with it.
On the alternative hand, the three-section transformer is a static device, thus there are not any rotational losses.
Thus the efficiency of three-phase induction motor is less than that of a 3-phase transformer.
Electrical Power System Interview Questions
Question: 16. Why The Air Gap Between The Pole Pieces And The Armature Is Kept Very Small?

Answer:

The air gap between the pole pieces and the armature is saved very small to preserve the sphere power at its highest fee.
This is due to the purpose the flux traces can skip thru iron very easily than the air gap.
The small air gap generates excessive voltage.
Larger the air hole means stronger should be the magnetising force to produce the required voltage subsequently the air gap is kept very small.
Question: 17. Why Does Curving The Pole Faces In A Dc Machines Contributes To A Smoother Dc Output Voltage From It?

Answer:

For having smoother output voltage from DC machines its commutation need to be as perfect as viable.
In order to have proper commutation the flux density within the air hole have to decrease regularly from most fee under the centre of the pole to 0 on.

Switchgear Interview Questions
Question: 18. The Series Field Winding Has Low Resistance While The Stunt Field Winding Has High Resistance. Why?

Answer:

The collection filed winding is usually related in series with the armature and for this reason has to hold the armature present day which without delay gets decided by using the burden.

Thus the current passing via series field winding is of high degree.

The voltage drop across series discipline winding receives introduced to the voltage drop throughout armature winding while determining the returned emf. This voltage drop must be very small.

Hence as the contemporary via series field winding is high, if you want to keep voltage drop across it to a small price, its resistance is very low.

On the other hand, the shunt area winding is directly connected throughout the rated supply voltage for this reason to restrict cutting-edge via it, resistance is very excessive.

Electrical Engineering Interview Questions
Question: 19. What Are The Conditions To Be Satisfied For Parallel Operation Of Dc Generators?

Answer:

The polarities of the turbines should be same or the connections ought to be interchanged until they end up equal.
The voltages of each the generators have to be same.
The trade of voltage with alternate of load have to be of same character.
The high movers riding the generators have to have strong and similar rotational velocity characteristics.
The positive and negative terminals of mills have to be connected nicely to the effective and poor of busbar.
Question: 20. What Are The Major Parts Of The Dc Generators?

Answer:

Yoke Poles
Field winding
Armature
Armature winding
Commutator brushes
Control Systems Interview Questions
Question: 21. What Is A Commutator?

Answer:

The commutator is a tool which converts alternating triggered emf in a generator to DC emf. In case of motor it produces unidirectional torque.

Question: 22. What Is Meant By Reactance Voltage?

Answer:

An armature coil has sure self inductance.
When coil undergoes commutation, there’s exchange in current (di) in that coil and the commutation takes sure time(dt).
Thus there’s self-prompted emf in a coil undergoing commutation given by L(di/dt).
This EMF induced inside the coil undergoing commutation is known as reactance voltage.
Question: 23. What Is Electric Motors?

Answer:

An electric powered motor is an electrochemical tool that converts electrical strength into mechanical power. Most electric motors perform through the interaction of magnetic discipline and contemporary carrying conductors to generate pressure.

Protection Relay Engineer Interview Questions
Question: 24. On What Principle Electric Motor Works?

Answer:

The Motor Principle: when a current-carrying conductor is located in an external magnetic area perpendicular to the conductor, the conductor experiences a force perpendicular to itself and to the outside magnetic field.The physical precept at the back of production of mechanical pressure by means of the interactions of an electric present day and a magnetic field.

The right-hand rule for pressure on a conductor can be used to determine the path of the force experienced at the conductor.

Network Administrator Interview Questions
Question: 25. How Many Types Of Electric Motors Are There?

Answer:

Mainly there are two kinds of electric cars:

AC automobiles
DC automobiles
Question: 26. What Is Ac Motor?

Answer:

An AC motor is an electric motor driven via an alternating cutting-edge (AC). It generally consists of two simple parts, an outside stationary stator having coils furnished with alternating modern-day to provide a rotating magnetic field, and an interior rotor connected to the output shaft that is given a torque by means of the rotating subject.

Question: 27. What Is Dc Motors?

Answer:

A DC motor is a mechanically commutated electric motor powered from direct present day (DC). The stator is desk bound in area by using definition and therefore so is its present day. The contemporary in the rotor is switched by the commutator to also be stationary in area. This is how the relative angle between the stator and rotor magnetic flux is maintained near ninety ranges, which generates the maximum torque.

Control Systems-Electrical Engineering Interview Questions
Question: 28. What Are The Applications Of Electric Motor?

Answer:

Electric automobiles packages are: commercial enthusiasts, blowers and pumps, machine tools, family home equipment, strength equipment, and disk drives, document players.

Question: 29. What Is Universal Motor?

Answer:

A series-wound motor is referred to as a regular motor when it has been designed to function on both AC or DC energy. It operate properly on AC because the contemporary in each the sphere and the armature (and therefore the resultant magnetic fields) will exchange in synchronism and therefore, the resulting mechanical force will occur in a constant course of rotation.

Question: 30. What Are The Advantages And Disadvantages Of Ac, Dc Motors?

Answer:

Advantages of AC Motors:

Low fee,
long life,
excessive efficiency,
big scores to be had (to 1 MW or greater),
big quantity of standardized sorts.
Disadvantages of AC Motors:

Starting inrush contemporary can be high,
pace manage requires variable frequency supply.
Advantages of DC Motors:

Precision positioning,
High preserving torque,
Long lifespan,
Low preservation,
High performance
Disadvantages of DC Motors:

Some may be high-priced,
Require a controller,
Higher initial price,
Requires a controller.

Elixir Interview Questions And Answers

Question: 1. What Is Elixir?

Answer:

Elixir is a dynamic, functional language. It is designed to construct scalable and maintainable programs.

Question: 2. Who Developed Elixir?

Answer:

Ericsson advanced elixir in 1986.

Python Interview Questions
Question: three. What Is The Stable Version Of Elixir?

Answer:

The solid model of Elixir is 1.5.1 and released on 1 August 2017.

Question: 4. What Are The Features Of Elixir?

Answer:

The following features of Elixir are:

Scalability
Fault tolerance
Functional programming
Build tools
Erlang Compatibility
Python Tutorial
Question: five. Which Platform Is Used To Run Elixir?

Answer:

BEAM (Erlang virtual system) platform is used to run Elixir.

J2EE Interview Questions
Question: 6. What Is The Use Of Spawn Functions?

Answer:

The Spawn characteristic is used to create a brand new process.

Example:

pid = spawn(fn -> 2 * 2 end)  

Process.Alive?(pid) 

Question: 7. What Is Sigils In Elixir?

Answer:

Elixir is a mechanism, used to textual representations with the language. It starts with tilde (~) man or woman.

J2EE Tutorial Core Java Interview Questions
Question: eight. How To Create A Map In Elixir??

Answer:

Map is created by using the usage of % syntax.

Map = %:a => 1, 2 => :b 

Question: nine. What Are The Operators In Elixir?

Answer:

There are following operators in Elixir:

Arithmetic operators
Comparison operators
Boolean operators
Misc operators
PostgreSQL Interview Questions
Question: 10. What Do You Mean By String Interpolation In Elixir?

Answer:

String interpolation is a way to assemble a brand new String fee. The code is wrap with curly braces and ‘#’ sign.

Example:

x = “Apocalypse”   

y = “X-men #x”  

IO.Places(y)  

Core Java Tutorial
Question: 11. What Is The Use Of Crypto Module In Elixir?

Answer:

In Elixir, the crypto module is used to decrypt our mission packages. It uses hashing function and digital signature.

Example:

IO.Places(Base.Encode16(:crypto.Hash(:sha256, “Elixir”)))

Ubuntu Certified Professional Interview Questions
Question: 12. How Can We Define Structs?

Answer:

We can define Structs by using using defstruct

iex> defmodule User do  

…>   defstruct call: “John”, age: 27  

…> quit  

Python Interview Questions
Question: thirteen. What Is Match Operator In Elixir?

Answer:

In elixir, = operator is in shape operator.

Example:

iex> x = 1  

1  

iex> x  

1  

Node.Js Tutorial

Enhanced Interior Gateway Routing Protocol (eigrp) Interview Questions And Answers

Question: 1. Does Eigrp Support Secondary Addresses?

Answer:

EIGRP does guide secondary deal with. Since EIGRP assets information packets from the primary addresses, Cisco recommends that we configure all routers on a specific subnet with primary addresses that belong to the similar subnet. Routers don’t shape EIGRP friends over secondary community. For which,  if all the primary IP addresses of routers don’t agree, issues arises with neighbor adjacency.

Question: 2. What Does The Eigrp Stuck In Active Message Mean?

Answer:

When EIGRP returns a caught in energetic message, because of this it has no longer acquired a reply from a query. It sends a query when a route is misplaced and any other possible direction does now not exist in the topology desk. The SIA is caused by 2 sequential occasions:

The reported course via the SIA has gone away.
An EIGRP neighbor (or friends) have not replied to the question for that direction.
When the SIA takes place, the router clears the neighbor that did now not reply for the query. When it occurs, determine which neighbor has been cleared. We have to Keep in thoughts that this router can be many hops away.

Switching Interview Questions
Question: 3. What Does The Neighbor Statement In The Eigrp Configuration Section Do?

Answer:

The neighbor command is used in EIGRP which will outline a neighboring router with which to trade  facts of routing. Because of the modern behavior of the command, EIGRP exchanges facts of routing with the friends inside the shape of unicast packets every time the neighbor command is configured for interface. EIGRP holds on processing all multicast packets that come inbound on that interface. EIGRP also mutes sending multicast packets on that interface.

The perfect behavior of this command is for EIGRP to begin sending EIGRP packets as unicast packets to the required neighbor, however  don’t prevent sending and receiving multicast packets on that interface. As  the command does not behave as meant, the neighbor command ought to used cautiously.

Question: 4. Why Does The Eigrp Passive-interface Command Remove All Neighbors For An Interface?

Answer:

The passive interface command disables the transmission and receipt of EIGRP hey packets on interface. Not in addition IGRP or RIP, EIGRP sends hiya packets so one can form and maintain neighbor adjacency. Not having a neighbor adjacency, EIGRP doesn’t trade routes with a neighbor. For which the passive interface command prevents the change of routes on the interface. Although EIGRP does not  obtain or ship routing updates on an interface configured with the passive interface command, it includes the deal with of the interface in routing updates sent out of different non-passive interfaces.

Wi-Fi Tutorial
Question: 5. What Is The Difference In Metric Calculation Between Eigrp And Igrp?

Answer:

The EIGRP metric is obtained when you multiply the IGRP metric of 256. The IGRP uses handiest 24 bits in its replace packet for the metric field, but 32 bit is utilized by EIGRP  in its replace packet for the metric discipline. E.G the IGRP metric to a vacation spot network is 8586, however the EIGRP metric might be 8586 x 256 = 2,198,016. Integer division is used when we divide 10^7 by using lowest BW, so the calculation involves division of integer, which might also leads to a version from guide calculation.

Firewall Support Interview Questions
Question: 6. How Does Eigrp Behave Over A Gre Tunnel Compared To A Directly Connected Network?

Answer:

EIGRP will use the equal administrative distance and metric calculation to the GRE tunnel. The calculation of cost is based on delay and bandwidth. The bandwidth and delay of the GRE tunnel should be taken from the tunnel interface configured on the router. The tunnel could be dealt with like a without delay linked network.

If there are 2 paths to reach a n/w both through a tunnel interface or VLAN interface, EIGRP prefers the Virtual-Access Interface VLAN interface due to the fact the VLAN interface has more bandwidth than the tunnel interface. To have an effect on the routing via the tunnel interface, It increases the bandwidth parameter of the tunnel interface, or will increase the delay parameter of the VLAN interface.

Question: 7. Can An Ospf Default Be Originated Into The System Based On External Information On A Router That Does Not Itself Have A Default?

Answer:

OSPF generates a default simplest if it’s far configured using the command default-statistics originate and if there is a default community inside the field from a specific method. In OSPF the default path is 0.Zero.0.Zero. If we want an OSPF enabled router to generate a default course even though it does now not have a default path, use the command default-information originate continually.

Routing Protcol Interview Questions
Question: 8. How Does Cisco Accommodate Ospf Routing On Partial-mesh Frame Relay Networks?

Answer:

We can configure OSPF to apprehend whether it have to try to use multicast facilities on a multi-get right of entry to interface. If multicast is to be had, OSPF normally makes use of it for its everyday multicasts

Cisco IOS Software Release 10.Zero includes a function called sub-interfaces. We can use sub interfaces with Frame Relay to tie together a fixed of digital circuits to shape a virtual interface, it acts as a unmarried IP subnet. All structures inside the sub-internet need to be completely meshed.

Question: nine. Which Address-wild-masks Pair Should I Use For Assigning An Unnumbered Interface To An Area?

Answer:

When we configured an unnumbered interface, it references  an any other interface on the router. When we allow OSPF on the unnumbered interface,  we ought to use the deal with-wild-mask pair of interfaces to which the unnumbered interface is pointing.

Cisco Interview Questions
Question: 10. What Is The Link-country Re-transmit Interval, And What Is The Command To Set It?

Answer:

OSPF sends acknowledgment of every newly received link-nation advertisement. It does this by way of sending LSA packets. After that  LSAs are re-transmitted till they’re recounted. The hyperlink kingdom while re-transmit the c language it defines the time among the re-transmissions. We  can use the command IP OSPF re-transmit c language to set the re-transmit c program languageperiod. Five seconds is the default value.

Question: 11. Does Eigrp Require An Ip Default-network Command To Propagate A Default Route?

Answer:

Although EIGRP can propagate a default path the usage of the default community approach, it isn’t always required. EIGRP redistributes default routes without delay.

Cisco Nexus switches Interview Questions
Question: 12. Should I Always Use The Eigrp Log-neighbor-adjustments Command When I Configure Eigrp?

Answer:

Yes, this command makes it clean to determine why an EIGRP neighbor was reset. This reduces troubleshooting time.

Switching Interview Questions
Question: 13. What Debugging Capabilities Does Eigrp Have?

Answer:

There are protocol-impartial and -dependent debug commands. There is also a suite of show instructions that display neighbor desk status, topology desk repute, and EIGRP traffic statistics. Some of those commands are:

show ip eigrp buddies
display ip eigrp interfaces
display ip eigrp topology
show ip eigrp site visitors
Question: 14. What Does The Word Serno Mean On The End Of An Eigrp Topology Entry When You Issue The Show Ip Eigrp Topology Command?

Answer:

For example:

show ip eigrp topology

P 172.22.71.208/29, 2 successors, FD is 46163456

via 172.30.1.Forty two (46163456/45651456), Serial0.2, serno 7539273

through 172.30.2.49 (46163456/45651456), Serial2.6, serno 7539266

Serno stands for serial variety. When DRDBs are threaded to be sent, they’re assigned a serial variety. If you display the topology desk on the time an access is threaded, it shows you the serial range associated with the DRDB.

Threading is the method used inside the router to queue items up for transmission to friends. The updates are not created till it is time for them to go out the interface. Before that, a linked listing of suggestions to objects to send is created (for instance, the thread).

These sernos are neighborhood to the router and are not handed with the routing replace.

Question: 15. What Percent Of Bandwidth And Processor Resources Does Eigrp Use?

Answer:

EIGRP version 1 brought a characteristic that prevents any unmarried EIGRP process from the usage of extra than fifty percentage of the configured bandwidth on any link at some stage in intervals of network convergence. Each AS or protocol (as an example, IP, IPX, or Appletalk) serviced through EIGRP is a separate process. You can use the ip bandwidth-percent eigrp interface configuration command so as to properly configure the bandwidth percent on every WAN interface. Refer to the EIGRP White Paper for extra records on how this selection works.

In addition, the implementation of partial and incremental updates approach that EIGRP sends routing statistics handiest when a topology exchange takes place. This characteristic extensively reduces bandwidth use.

The viable successor function of EIGRP reduces the quantity of processor sources used by an self sustaining device (AS). It calls for only the routers tormented by a topology exchange to perform course re-computation. The course re-computation simplest occurs for routes that have been affected, which reduces search time in complex statistics structures.

Wi-Fi Interview Questions
Question: 16. Does Eigrp Support Aggregation And Variable Length Subnet Masks?

Answer:

Yes, EIGRP supports aggregation and variable duration subnet mask (VLSM). Unlike Open Shortest Path First (OSPF), EIGRP lets in summarization and aggregation at any factor inside the community. EIGRP helps aggregation to any bit. This permits well designed EIGRP networks to scale rather nicely without using areas. EIGRP also helps automatic summarization of network addresses at major network borders.

Question: 17. Does Eigrp Support Areas?

Answer:

No, a single EIGRP method is analogous to an area of a link-country protocol. However, in the system, records may be filtered and aggregated at any interface boundary. In order to certain the propagation of routing data, you could use summarization to create a hierarchy.

Firewall (computing) Interview Questions
Question: 18. Can I Configure More Than One Eigrp Autonomous System On The Same Router?

Answer:

Yes, you can configure more than one EIGRP independent device on the same router. This is typically carried out at a redistribution point where  EIGRP independent systems are interconnected. Individual router interfaces have to handiest be covered within a single EIGRP self reliant system.

Cisco does no longer endorse going for walks more than one EIGRP self sustaining structures at the same set of interfaces at the router. If a couple of EIGRP autonomous systems are used with a couple of points of mutual redistribution, it is able to motive discrepancies in the EIGRP topology table if correct filtering isn’t carried out at the redistribution points. If possible, Cisco recommends you configure best one EIGRP independent machine in any single self sustaining gadget. You can also use any other protocol, which includes Border Gateway Protocol (BGP), for you to join the two EIGRP independent systems.

Firewall Support Interview Questions
Question: 19. If There Are Two Eigrp Processes That Run And Two Equal Paths Are Learned, One By Each Eigrp Process, Do Both Routes Get Installed?

Answer:

No, only one direction is hooked up. The router installs the route that was discovered thru the EIGRP procedure with the lower Autonomous System (AS) range. In Cisco IOS Software Releases in advance than 12.2(7)T, the router set up the path with the present day timestamp obtained from either of the EIGRP processes. The trade in behavior is tracked with the aid of Cisco trojan horse ID CSCdm47037.

Question: 20. Why Are Routes Received From One Neighbor On A Point-to-multipoint Interface That Runs Eigrp Not Propagated To Another Neighbor On The Same Point-to-multipoint Interface?

Answer:

The split horizon rule prohibits a router from advertising a direction via an interface that the router itself makes use of to attain the destination. In order to disable the break up horizon conduct, use the no ip break up-horizon eigrp as-quantity interface command. Some important factors to don’t forget approximately EIGRP split horizon are:

Split horizon conduct is turned on through default.
When you exchange the EIGRP cut up horizon placing on an interface, it resets all adjacencies with EIGRP neighbors accessible over that interface.
Split horizon must handiest be disabled on a hub website online in a hub-and-spoke community.
Disabling cut up horizon on the spokes considerably increases EIGRP reminiscence intake at the hub router, in addition to the amount of site visitors generated at the spoke routers.
The EIGRP cut up horizon conduct isn’t controlled or motivated by means of the ip split-horizon command.
Border Gateway Protocol (BGP) Interview Questions
Question: 21. When I Configure Eigrp, How Can I Configure A Network Statement With A Mask?

Answer:

The non-compulsory community-mask argument turned into first brought to the community announcement in Cisco IOS Software Release 12.Zero(4)T. The masks argument can be configured in any format (along with in a community mask or in wild card bits). For instance, you may use community 10.10.10.Zero 255.255.255.252 or community 10.10.10.Zero zero.0.Zero.Three.

Question: 22. I Have Two Routes: 172.16.1.Zero/24 And 172.Sixteen.1.Zero/28. How Can I Deny 172.16.1.Zero/28 While I Allow 172.16.1.0/24 In Eigrp?

Answer:

In order to try this you need to apply a prefix-list, as proven right here:

router eigrp 100
       network 172.Sixteen.0.0
       distribute-list prefix take a look at in
       car-precis
       no eigrp log-neighbor-adjustments
       !
       Ip prefix-list test seq 5 permit 172.16.1.0/24

This permits handiest the 172.Sixteen.1.Zero/24 prefix and therefore denies 172.16.1.0/28.

Note: The use of ACL and distribute-list underneath EIGRP does no longer paintings in this example. This is because ACLs do now not test the masks, they just check the network element. Since the network portion is the identical, when you permit 172.16.1.Zero/24, you also allow 172.16.1.Zero/28.

Question: 23. I Have A Router That Runs Cisco Express Forwarding (cef) And Eigrp. Who Does Load-balancing When There Are Multiple Links To A Destination?

Answer:

The manner wherein CEF works is that CEF does the switching of the packet based totally at the routing desk that is populated via the routing protocols consisting of EIGRP. In quick, CEF does the weight-balancing once the routing protocol table is calculated. 

Cisco Network Engineer Interview Questions
Question: 24. How Can I Use Only One Path When A Router Has Two Equal Cost Paths?

Answer:

Configure the bandwidth fee at the interfaces to default, and increase the delay on the backup interface in order that the router does not see  identical cost paths.

Routing Protcol Interview Questions
Question: 25. What Is The Eigrp Stub Routing Feature?

Answer:

The Stub routing feature is used to conserve bandwidth by summarizing and filtering routes. Only designated routes are propagated from the far off (Stub) router to the distribution router due to the Stub routing function. For greater facts about the Stub routing characteristic, check with EIGRP Stub Routing. The EIGRP stub function can be configured on the transfer with the eigrp stub [receive-only] [leak-map name] [connected] [static] [summary] [redistributed] command. This feature may be eliminated with the no eigrp stub command. When you eliminate the eigrp stub command from the transfer, the transfer that runs the IP Base picture throws this mistake:

EIGRP is limited to stub configurations most effective

Question: 26. How Can I Send A Default Route To The Stub Router From The Hub?

Answer:

Do this underneath the outbound interface on the hub router with the ip precis-cope with eigrp X 0.Zero.Zero.Zero 0.Zero.Zero.0 command. This command suppresses all the greater unique routes and handiest sends the summary course. In the case of the 0.0.Zero.Zero zero.Zero.Zero.Zero, it method it suppresses the whole thing, and the handiest path this is within the outbound update is zero.0.Zero.0/0. One downside to this method is that EIGRP installs a 0.Zero.Zero.Zero/zero direction to Null0 is the nearby routing desk with an admin distance of five.

OSPF Interview Questions
Question: 27. What Are Different Route Types In Eigrp?

Answer:

There are 3 exclusive styles of routes in EIGRP:

Internal Route—Routes which might be originated within the Autonomous System (AS).
Summary Route—Routes which can be summarized inside the router (as an instance, internal paths which have been summarized).
External Route—Routes that are redistributed to EIGRP.
Cisco Interview Questions
Question: 28. How Do You Redistribute An Ipv6 Default Route In Eigrp?

Answer:

For redistributing an IPv6 default direction in EIGRP, a sample configuration is shown here:

ipv6 prefix-list DEFAULT-ONLY-V6 seq 10 permit ::/zero
course-map DEFAULT_2EIGRP-V6 permit 10
match ipv6 deal with prefix-list DEFAULT-ONLY-V6
router eigrp Starz_EIGRP
deal with-circle of relatives ipv6 unicast
redistribute static path-map DEFAULT_2EIGRP-V6

Question: 29. What Is An Offset-listing, And How Is It Useful?

Answer:

The offset-list is an function used to modify the composite metrics in EIGRP. The price configured within the offset-list command is added to the delay cost calculated through the router for the direction matched by means of an get right of entry to-listing. An offset-listing is the desired approach to persuade a specific route that is advertised and/or chosen.

Question: 30. How Can I Tag External Routes In Eigrp?

Answer:

You can tag routes that EIGRP has discovered from every other routing protocol using a 32 bit tag fee. Starting with ddts CSCdw22585, internal routes also can be tagged. However, the tag cost can not exceed 255 because of packet boundaries for inner routes.

Question: 31. What Are The Primary Functions Of The Pdm?

Answer:

EIGRP helps 3 protocol suites: IP, IPv6, and IPX. Each of them has its own PDM. These are the number one functions of PDM:

Maintaining the neighbor and topology tables of EIGRP routers that belong to that protocol suite
Building and translating protocol precise packets for DUAL
Interfacing DUAL to the protocol specific routing desk
Computing the metric and passing this information to DUAL; DUAL handles only the selecting of the possible successors (FSs)
Implement filtering and get right of entry to lists.
Perform redistribution functions to/from different routing protocols.
Question: 32. What Are The Various Load-balancing Options Available In Eigrp?

Answer:

The offset-listing can be used to modify the metrics of routes that EIGRP learns thru a particular interface, or PBR can be used.

Question: 33. What Does The %twin-five-nbrchange: Ip-eigrp(0) 100: Neighbor 10.254.Zero.3 (tunnel0) Is Down: Holding Time Expired Error Message Mean?

Answer:

This message indicates that the router has now not heard any EIGRP packets from the neighbor inside the keep-time restriction. Because this is a packet-loss trouble, take a look at for a Layer 2 hassle.

Cisco Nexus switches Interview Questions
Question: 34. From The sixteen:29:14.262 Poison Squashed: 10.X.X.X/24 Reverse Message, What Does Poison Squashed Mean?

Answer:

The router threads a topology table access as a poison in respond to an replace obtained (the router units up for poison opposite). While the router is constructing the packet that contains the poison opposite, the router realizes that it does now not want to ship it. For instance, if the router gets a question for the course from the neighbor, it is presently threaded to poison. Thus, it sends the poison squashed message.

Question: 35. Is It Normal That Eigrp Takes Over 30 Seconds To Converge?

Answer:

EIGRP taking longer to converge below heavy CPU utilization is a regular conduct. EIGRP convergence is faster whilst you lower the preserve time. The lowest values for hey and maintain time are 1 2d and 3 seconds respectively. For instance:

Router(Config)# interface Fa0/0 

!— (Under an interface without delay connected to EIGRP friends.)

Router(Config-if)#ip good day-interval eigrp 1

Router(Config-if)#ip preserve-time eigrp 3