Category: IOT Objective Questions

IOT Multiple Choice Questions on “LPC 2148 Pro Development Board”.

1. LPC 2148 pro development board has _________ on chip memory.
a) 500k
b) 625k
c) 512k
d) 425k

Answer: c
Clarification: LPC 2148 Pro Development Board is a powerful development platform based on LPC2148 ARM7TDMI micro controller with 512k on-chip memory.

2. The USB controller provides high speed interface to laptop/PC with a speed of ________
a) On-chip USB with 12Mb/s
b) On-chip USB with 15Mb/s
c) Peripheral USB with 12Mb/s
d) Peripheral USB with 15Mb/s

Answer: a
Clarification: The on-chip USB controller provides direct high speed interface to a PC/laptop with speeds up to 12Mb/s.

3. Xbee/Bluetooth/Wifi wireless modules and SD/MMC card are included in the board?
a) True
b) False

Answer: b
Clarification: Xbee/Bluetooth/Wifi wireless modules and SD/MMC card are not included in the board and it can be separately brought from Net Robotics Website.

4. In LPC 2148 we require separate programmer?
a) True
b) False

Answer: b
Clarification: The UART boot loader eliminates the need of an additional programmer and allows you to program using serial port.

5. Which LCD display is present in LPC 2148 Development Board?
a) 8*8 LED
b) 2*32 LCD
c) 2*16 LCD connected peripherally
d) 2*16 LCD on-chip

Answer: d
Clarification: On-board two line LCD Display (2*16) with jumper selection option to disable LCD when not required.

6. Does it have in system programming or in application programming?
a) True
b) False

Answer: a
Clarification: In system programming is generally what we do, i.e., using Jtag the program is dumped in to the board.
In application programming means without any external devices the program can be changed (which we already written in the original program).

7. It provides real time debugging with the on chip real monitor software.
a) True
b) False

Answer: a
Clarification: Embedded ICE RT and Embedded Trace Interfaces offer real-time debugging with the on chip Real monitor software and high speed tracing execution.

8. Who is the founder of LPC2148 board?
a) Intel
b) Atmel
c) Motorola
d) Philips

Answer: d
Clarification: ARM LPC2148 is ARM7TDMI-S core board microcontroller that uses 16/32-Bit 64 pin(LQFP) microcontroller No.LPC2148 from Philips(NXP).

9. What is the program counter value when the board turns on?
a) 0x00000
b) 0xFFFFF
c) Where the previous program ends
d) At the location where we write the code

Answer: a
Clarification: Usually the program counter will store the address of the instruction to be executed but, when we start the board it points to the first address memory location.

10. Which IDE is supported by LPC2148 board?
a) Code Blocks
b) AVR Studio 4
c) Keil uVersion 4
d) Walldorf

Answer: c
Clarification: Using Real view compiler the keil uVersion 4 is used. Whereas, AVR studio 4 is used for ATmega128 microcontroller. And code block is used for c programming.

11. ________ bit ARM7TDMI controller is present?
a) 128 bit
b) 8 bit
c) 64 bit
d) 32 bit

Answer: d
Clarification: LPC 2148 Pro Development Board is a powerful development platform based on LPC2148 ARM7TDMI micro controller with 512k on-chip memory. With a 16-bit/32-bit ARM7TDMI-S microcontroller is a tiny LQFP64 package.

12. USB 2.0 full speed compliant device controller with _________ of end point RAM.
a) 6 kB
b) 4 kB
c) 2 kB
d) 8 kB

Answer: c
Clarification: The on-chip USB controller provides direct high speed interface to a PC/laptop with speeds up to 12 Mb/s. USB 2.0 full speed compliant device controllers with 2 kB of end point RAM.

13. Single 10-bit DAC provides variable _________ output.
a) Digital
b) Analog
c) Analog and digital
d) Neither analog nor digital

Answer: b
Clarification: Two 10-bit ADCs provide a total of 14 analog inputs whereas single 10-bit DAC provides variable analog output.

14. Timer in the board has _________ compare and _________ capture channels.
a) 3 and 4
b) 4 and 3
c) 4 and 4
d) 3 and 3

Answer: c
Clarification: Two 32-bit timer/external event counters have four capture and four compare channels each and also a PWM unit with six outputs and a watchdog.

15. What is the operating voltage of the board?
a) 5v
b) 2.5v
c) 3v
d) 4.5v

Answer: c
Clarification: Single power supply with POR and BOD circuits and operated at the supply voltage of 3.0 to 3.6v with 5v tolerant I/O pads.

IOT Multiple Choice Questions on “Touch Sensor”.

1. Other name for tactile sensor is______________
a) Pressure sensor
b) Humidity sensor
c) Touch sensor
d) Temperature sensor

Answer: c
Clarification: Touch sensors are also called as tactile sensor and are sensitive to touch, force or pressure. These are one of the simplest and useful sensors.

2. How many types of touch sensors are present?
a) 2 types
b) 3 types
c) 4 types
d) 5 types

Answer: a
Clarification: There are two types of sensors: capacitive sensor
Resistive sensor.

3. Which sensor is used in mobile phones?
a) Capacitive touch sensor
b) Temperature sensor
c) Humidity sensor
d) Weight sensor

Answer: a
Clarification: Capacitive touch sensors are widely used in most of the portable devices like mobile phones and MP3 players. The reason for this development is durability, robustness, attractive product design and cost.

4. Capacitive touch sensor has moving parts.
a) True
b) False

Answer: b
Clarification: Touch sensor, unlike mechanical devices, do not contain moving parts. Hence, they are more durable than mechanical input devices.

5. How many types the capacitive touch sensors are classified?
a) 1 type
b) 2 types
c) 3 types
d) 4 types

Answer: b
Clarification: There are two types of capacitive touch sensors
1. surface capacitive sensing
2. Projected capacitive sensing
In surface capacitive sensing, an insulator is applied with a conductive coating on one side of its surface.
In projected capacitive sensing, the whole surface is not changed, but an X-Y grid conductive material is placed between two insulating materials.

6. Resistive touch sensor is used for longer time than capacitive touch sensor.
a) True
b) False

Answer: a
Clarification: Resistive touch sensors are used for a longer time than capacitive solutions as they are simple control circuits. A resistive touch sensor does not depend on the electrical property of capacitance.

7. How many types of sensors are there in resistive touch sensor?
a) 2 types
b) 3 types
c) 4 types
d) 5 types

Answer: b
Clarification: There are three types of resistive touch sensors: 4-wire, 5-wire, 8-wire.
4-wire resistive touch sensor is most cost effective. 5-wire resistive touch sensors are most durable. 8-wire resistive touch sensor, each edge of the sensor provides a sensing line.

8. Which touchscreen is coated with a transparent material?
a) Capacitive touchscreen
b) SAW
c) Infrared
d) Resistive touchscreen

Answer: d
Clarification: The inside surface is coated with a transparent material that makes electrical contact when pressure is applied. Whilst resistive screens are durable and easy to integrate, they can only offer 75% clarity.

9. Which touchscreen offers 75% clarity?
a) Resistive touchscreen
b) Capacitive touchscreen
c) SAW
d) Infrared

Answer: a
Clarification: The inside surface is coated with a transparent material that makes electrical contact when pressure is applied. Whilst resistive screens are durable and easy to integrate, they can only offer 75% clarity.

10. Which touchscreen is used for industrial purpose?
a) Resistive touchscreen
b) Capacitive touchscreen
c) SAW
d) Infrared

Answer: b
Clarification: Commonly utilized for industrial purpose, capacitive touch screen consists of a glass overlay, coated with a conductive material such as Indium Tin Oxide.

11. SAW expanded as?
a) Surface Arrangement Wave
b) Screen Acoustic Wave
c) Screen Arrangement Wave
d) Surface Acoustic Wave

Answer: d
Clarification: SAW touch screen technology is based upon two transducers and a reflector placed on the glass surface. The wave is dispersed across the screen by bouncing off the reflector arrangement and received by the transducers.

12. Which touchscreen technology does not incorporate an overlay.
a) Resistive touchscreen
b) Infrared
c) Capacitive touchscreen
d) SAW

Answer: b
Clarification: Infrared touch screen technology does not incorporate an overlay. Instead, a frame surrounding the display consists of LEDs on one side and phototransistor detector on the other.

13. Which touch screen technology is popular for its versatility?
a) Resistive touchscreen
b) Capacitive touchscreen
c) SAW
d) Optical Imaging

Answer: d
Clarification: This touch screen technology is popular for its versatility and scalability. Optical imaging relies on infrared lights.

14. Which touchscreen is made up a glass overlay.
a) Resistive touchscreen
b) Capacitive touchscreen
c) APR
d) SAW

Answer: c
Clarification: An APR touch screen is made up a glass overlay and four transducers attached to the back exterior. When the screen is touched, the friction creates acoustic waves.

15. Are APR touch screens touch resistances?
a) True
b) False

Answer: a
Clarification: An APR touch screen is made up a glass overlay and four transducers attached to the back exterior. When the screen is touched, the friction creates acoustic waves. APR touch screens are water resistance, durable and scalable.

IOT Problems focuses on “IOT Gateway ( Edge System)”.

1. What is the Edge gateway model used by dell?
a) 5000
b) 4500
c) 4000
d) 3500

Answer: a
Clarification: Dell edge gateway model 5000 has an operating system Ubantu snape core with a memory of 2G, 4G, and 8G.

2. What is the wireless system used by dell?
a) WAN
b) WWAN
c) HAN
d) MAN

Answer: b
Clarification: 802.11n Wifi + Bluetooth low energy and WWAN (3G or LTE) and also Mobile broadband 3G/LTE.

3. Do we have a protection in Dell.
a) True
b) False

Answer: a
Clarification: Our hardware features help protect your network edge and sensor from Cyber-attack including secure boot and BIOS-level control.

4. Where the edge gateway sits in dell?
a) Near the system
b) End of the system
c) End of the devices
d) Near the devices

Answer: d
Clarification: Dell’s intelligent gateway sits near the devices and systems in distributed IoT networks. Meaningful data is sent to the cloud or data centre to enrich the analytic control and smart systems.

5. Windows 10 IoT enterprise OS includes what?
a) Edge gateway
b) PI system
c) RAM
d) Data stream

Answer: a
Clarification: Edge gateways come in many shapes and sizes and the edge gateways that include the windows IoT enterprise operating system are ideally suited to run the PI system.

6. Types of gateway classes?
a) Only one
b) 3 types
c) 2 types
d) 4 types

Answer: c
Clarification: We are having 2 types of gateway classes. They are: Small
Large
These classes have different CPU’s Atom and Core respectively.

7. IoT gateway sits at the interaction of egde systems.
a) True
b) False

Answer: a
Clarification: IoT gateway also operates as platforms for application code that processes data and becomes an intelligent part of a device-enabled system. IoT gateway sits at the interaction of edge systems — devices, controllers and sensors — and the cloud.

8. NEXCOM provides what?
a) OS
b) IoT gateway
c) Devices
d) Transportation

Answer: b
Clarification: Today’s “smart” IoT gateway — delivered by companies such as Dell, Wind River/ Intel, NEXCOM and other — are full fledged computing platforms running modern operating systems.

9. Linux or Windows are sometimes called as _________
a) OS
b) Intelligent Gateways
c) Gateway
d) Devices

Answer: c
Clarification: Linux or Windows are sometimes called as “Intelligent gateways”, but the line is burning and the non-intelligent gateway market is likely to become largely irrelevant in coming years.

10. In which cases gateway will appear?
a) Industrial Automation
b) Building automation
c) Transportation
d) Industrial & Building Automation

Answer: d
Clarification: Dell believes that its gateways will appeal to users in three major use cases: Industrial automation, building automation, transportation. One of Dell’s early client in eigen innovation, a supplier of intelligent industrial vision systems.

IOT Multiple Choice Questions on “Cloud – Powerful Smart Mobile Devices”.

1. IaaS stands for __________
a) Infrastructure as a Service
b) Infrastructure as a Software
c) Internet as a Service
d) Internet as a Software

Answer: a
Clarification: Cloud Computing delivers infrastructure, platform, and software that are provided as services on the usage based payment to end users. These services are Infrastructure as a Service (IaaS).

2. Mobile cloud computing at its simplest refers to an __________
a) Intervention
b) Internet
c) Infrastructure
d) Intervention & Internet

Answer: c
Clarification: Mobile cloud computing at its simplest refers to an infrastructure where both data storage and the data processing happen outside of the mobile devices.

3. Mobile Cloud applications move the __________ Power and __________ away from mobile phone and into cloud.
a) Computing and internet
b) Data storage and computing
c) Computing and data storage
d) Internet and computing

Answer: c
Clarification: Mobile cloud applications move the computing power and data storage away from mobile phones and into the cloud, bringing applications and mobile computing to not just smart phone users but a much broader range of mobile subscribers.

4. SaaS stands for __________
a) Service as a Smartphone
b) Service as a software
c) Smartphone as a service
d) Software as a Service

Answer: d
Clarification: Cloud computing delivers infrastructure, platform, and software that are provided as services on the usage based payment to end users. These services are Software as a Service (SaaS).

5. __________ reduces the development and running cost of mobile applications on smartphone devices.
a) Infrastructure
b) Productive business
c) Software
d) Services

Answer: b
Clarification: It is a productive business choice that transfers data from smartphone devices to powerful and centralized computer platform located in the cloud. Thus reducing the development and running cost of mobile applications on smartphone devices.

6. PaaS stands as __________
a) Platform as a Software
b) Photo as a service
c) Platform as a Service
d) Photo as a Software

Answer: c
Clarification: Cloud Computing delivers infrastructure, platform, and software that are provided as services on the usage based payment to end users. These services are Platform as a Service (PaaS).

7. The architecture of MCC is such that various mobile devices are connected to their respective mobile networks via __________
a) Software
b) Satellite
c) Access point
d) Base Station

Answer: d
Clarification: The architecture of MCC is such that various mobile devices are connected to their respective mobile networks via base station.

8. MCC stands for Mobile Cloud Computation.
a) True
b) False

Answer: a
Clarification: The advancement in cloud computing is leading to an excessive growth of mobile devices that can become powerful means for information access and mobile applications. Introducing a latent technology called Mobile Cloud Computing.

9. __________ is the minimum value which an application shall exceed to be offloaded.
a) Static value
b) Critical value
c) Threshold value
d) Dynamic value

Answer: c
Clarification: Threshold value is the minimum value which an application shall exceed to be offloaded. The threshold value can be measured in terms of processing time, energy consumption and memory usage.

10. Offloading decision depends upon __________ to be offloaded.
a) Size of application
b) Threshold value
c) Critical value
d) Dynamic value

Answer: a
Clarification: Offloading decision depends upon the size of application to be offloaded. It saves energy for a code compilation, if size of the code is large.

11. The part of the code which involves complex computations and requires more time to execute is referred to as __________
a) Static session
b) Threshold session
c) Dynamic session
d) Critical session

Answer: d
Clarification: The part of the code which involves complex computations and requires more time to execute is referred to as critical session. The module of the application if falls under the critical section then it is offloaded.

12. In __________ offloading application is partitioned during development.
a) Static offloading
b) Dynamic offloading
c) Threshold offloading
d) Critical offloading

Answer: a
Clarification: In static offloading application is partitioned during development. In static environment, parameters such as data size and execution time which acts as a deciding factor for offloading are known beforehand.

13. __________ network environment means changing connection status.
a) Static offloading
b) Dynamic offloading
c) Threshold offloading
d) Critical offloading

Answer: b
Clarification: Dynamic network environment means changing connection status and bandwidth that affect the process of offloading.

14. __________ is defined as delay between the offloading and final result.
a) Latency rate
b) Network Bandwidth
c) Heterogeneity
d) Migration Cost

Answer: a
Clarification: Latency rate is defined as delay between the offloading of an application on the cloud and final results to be retracted back to the smartphone.

15. _____________ Depends upon the amount of the code being offloaded.
a) Latency rate
b) Network Bandwidth
c) Heterogeneity
d) Migration Cost

Answer: b
Clarification: Bandwidth Utilization depends on the amount of the code being offloaded. If large amount of data is to be offloaded to the cloud then it ultimately increases the latency rate which in turn affects the efficiency.

IOT Multiple Choice Questions on “Toy Designs”.

1. ________ device, perhaps in the form of doll or toy.
a) Anthropomorphic
b) Devil toy
c) Chunky
d) Teddy

Answer: a
Clarification: Anthropomorphic device, perhaps in the form of doll or toy, may be configured to control one or more media devices.

2. The anthropomorphic device may aim its gaze at the source of ________
a) Interpreter
b) Media device
c) Social cue
d) Transmitter

Answer: c
Clarification: Upon reception or a detection of a social cue, such as movement or spoken word or phase, the anthropomorphic device may aim its gaze at the source of the social cue.

3. The anthropomorphic device may transmit the media device command to ________
a) Social cue
b) Media device
c) Interpreter
d) Transmitter

Answer: b
Clarification: In response to receiving a voice command, the anthropomorphic device may interpret the voice command and map it to a media device command. Then, the device may transmit the media command to a media device.

4. The toy includes ________
a) Microphone
b) Camera
c) Speaker
d) Microphone, camera, and speaker

Answer: d
Clarification: The toys, which include microphones, cameras, speakers and motors, have some people pointing at teddy, the super computer toy.

5. The privacy concerns are ________ when devices have the capacity to record conversations and log activity.
a) Clear
b) Not clear
c) Fluctuating
d) Constant

Answer: a
Clarification: The privacy concerns are clear when devices have the capacity to record conversations and log activity.

6. When we hear about IoT, we think of our ________
a) Microphone
b) Speaker
c) Thermostat
d) Transmitter

Answer: c
Clarification: Usually when you hear about the Internet of Things, you think about it in terms of your thermostat.

7. Sensible objects first game is called Fabulous Beast.
a) True
b) False

Answer: a
Clarification: Sensible objects first game is called Fabulous Beast. A multi-player balancing game that fleetwood describes as a cross between Jenga and collectible card pokemon.

8. Hello Barbie does what?
a) Moves its hands
b) Raises its Eyebrow
c) Moves its legs
d) Moves its head

Answer: b
Clarification: Barbie went through hard times as Mattel released Hello Barbie, a cloud connected doll that raised eyebrows amongst parents who were uncomfortable with Barbie listening to children.

9. Does the HelloBarbie connected to cloud?
a) True
b) False

Answer: a
Clarification: Barbie went through hard times as Mattel released Hello Barbie, a cloud connected doll that raised eyebrows amongst parents who were uncomfortable with Barbie listening to children.

10. Using ________ toy will keep interaction between toy and child.
a) Device
b) Motor
c) Driver
d) Engine

Answer: d
Clarification: Using a dialogue engine to utilize some of the most advanced language processing algorithms available driving the personalization of our platform, and keeping the interaction going between toy and child.

11. With set of sensors and app children can do ________
a) Feed
b) Bathe
c) Hatch
d) Feed, bathe and hatch

Answer: d
Clarification: Peppered with his own set of sensors and app children can virtual feed, bathe, and hatch the toy, providing yet another variant of how physical toys and connectivity can merge.

12. ________ introduces children to the concept of computer programming.
a) Lightbot
b) Brain Development
c) Healthy and activity
d) Privacy

Answer: a
Clarification: Lightbot introduces children to the concept of computer programming through fun interactive puzzles.

13. Using what the time can and should be used for encouraging education and imagination.
a) Lightbot
b) Brain Development
c) Healthy and activity
d) Privacy

Answer: b
Clarification: The connected toy should not abuse this already concerning trend, but capitalize on the value it produces. With this children’s should improve education and imagination.

14. By using which of the following the floor of the child plays area turn into an interactive game?
a) Lightbot
b) Brain Development
c) Healthy and activity
d) Privacy

Answer: c
Clarification: Lumo’s Interactive Projector turns the floor of your child play area into an interactive game that encourages running, jumping and all sorts of physical activities, which makes the child healthy and active.

15. ________ the connected toy will warrant significant effort from manufactures.
a) Lightbot
b) Brain Development
c) Healthy and activity
d) Privacy and safety

Answer: d
Clarification: Safety and privacy surrounding the connected toy will warrant significant effort from manufacturers and parents alike.

IOT Multiple Choice Questions on “Microcontroller (8051)”.

1. What do you mean by micro in microcontroller?
a) Distance between 2 IC’s
b) Distance between 2 transistors
c) Size of a controller
d) Distance between 2 pins

Answer: b
Clarification: Micro means 10-6 which gives the distance between 2 element transistors which is called as Micron Technology.

2. What is the bit size of the 8051 microcontroller?
a) 8-bit
b) 4-bit
c) 16-bit
d) 32-bit

Answer: a
Clarification: It is an 8-bit microcontroller which means most of the operations are limited to 8 bit only.

3. Name the architecture and the instruction set for microcontroller?
a) Van- Neumann Architecture with CISC Instruction Set
b) Harvard Architecture with CISC Instruction Set
c) Van- Neumann Architecture with RISC Instruction Set
d) Harvard Architecture with RISC Instruction Set

Answer: b
Clarification: Harvard architecture has different memory spaces for both program memory and data memory with Complex Instruction Set Computer(CISC). The difference between CISC and RISC is RISC has few instructions than CISC. Where as in Van- Neumann, program and data memory are same. Van- Neumann is also called as Princeton architecture.

4. Number of I/O ports in the 8051 microcontroller?
a) 3 ports
b) 4 ports
c) 5 ports
d) 4 ports with last port having 5 pins

Answer: b
Clarification: It has 4 ports with port0 act as I/O port and also multiplexing of address and data bus. Port1act as I/O port. Port 2 act as I/O and also like address lines. Port 3 act as I/O and also for external peripherals.

5. Is ROM is used for storing data storage?
a) True
b) False

Answer: b
Clarification: RAM is used for storing data storage and ROM is used for storing program memory.

6. SCON in serial port is used for which operation?
a) Transferring data
b) Receiving data
c) Controlling
d) Controlling and transferring

Answer: c
Clarification: There are 2 pins available in serial port. One is used for transmission and other is used for receiving data. SCON is the bit in the serial port which is used for controlling the operation.

7. Program counter stores what?
a) Address of before instruction
b) Address of the next instruction
c) Data of the before execution to be executed
d) Data of the execution instruction

Answer: b
Clarification: Points to the address of the next instruction to be executed from ROM. It is 16 bit register means the 8051 can access program address from 0000H to FFFFH. Total 64KB of code.

8. Auxiliary carry is set during which condition?
a) When carry is generated from D3 to D4
b) When carry is generated from D7
c) When carry is generated from both D3 to D4 and D7
d) When carry is generated at either D3 to D4 or D7

Answer: a
Clarification: When carry is generated from D3 to D4, it is set to 1, it is used in BCD arithmetic.

9. What is order of the assembly and running 8051 program?
i) Myfile.asm
ii) Myfile.lst
iii) Myfile.obj
iv) Myfile.hex
a) i,ii,iii,iv
b) ii,iii,I,iv
c) iv,ii,I,iii
d) iii,ii,I,iv

Answer: a
Clarification: After writing the program in editor and compilation first .asm, .lst, .obj, .hex are created.

10. The use of Address Latch Enable is to multiplex address and data memory.
a) True
b) False

Answer: a
Clarification: That is used for multiplexting address and data ie., the same line carries address and data. To indicate when it carries address, ALE is emitted by 8051.

11. Which pin provides a reset option in 8051?
a) Pin 1
b) Pin 8
c) Pin 11
d) Pin 9

Answer: d
Clarification: Reset pin is utilized to set the micro controller 8051 to its primary values, whereas the micro controller is functioning or at the early beginning of application. The reset pin has to be set elevated for two machine rotations.

12. External Access is used to permit ____________
a) Peripherals
b) Power supply
c) ALE
d) Memory interfacing

Answer: d
Clarification: External Access input is employed to permit or prohibit outer memory interfacing. If there is no outer memory needed, this pin is dragged by linking it to Vcc.

13. What is the address range of SFRs?
a) 80h to feh
b) 00h to ffh
c) 80h to ffh
d) 70h to 80h

Answer: c
Clarification: In 8051 there certain registers which uses the RAM addresses from80h to ffh. These are called as Special Function Registers. Some of the SRFrs are I/o ports and control operations as TCON, SCON, PCON.

14. How many interrupts are there in micro controller?
a) 3
b) 6
c) 4
d) 5

Answer: d
Clarification: An interrupt is an external or internal event that disturbs the microcontroller to inform if that needs its services. There are 5 interrupts :
Timer 0 overflow interrupt
Timer 1 overflow interrupt
External Interrupt 0
External Interrupt 1
Serial port events.

15. Timer 0 is a ________ bit register.
a) 32-bit
b) 8-bit
c) 16-bit
d) 10-bit

Answer: c
Clarification: The Timer 0 is a 16-bit register and can be treated as two 8-bit registers and these can be accessed similarly to any other registers.