Category: IOT Objective Questions

IOT Questions on “IoT Architecture for Precision Agriculture”.

1. Which protocol is used to link all the devices in the IoT?
a) TCP/IP
b) Network
c) UDP
d) HTTP

Answer: a
Clarification: The internet of Thing is the global system of interconnected computer networks that use the Internet Protocol suite (TCP/IP) to link billions of devices worldwide.

2. ________ enables seamless integration of LoWPAN devices with internet leveraging.
a) IETF 6LoWPAN
b) IEFT CoAP
c) RFID/NFC
d) IEEE 802.15.4.LoWPAN

Answer: a
Clarification: IETF 6LoWPAN enables seamless integration of LoWPAN devices with internet leveraging IPv6 large address space and appln. Layer protocol reuse.

3. ________ enables open application layer for constrained nodes.
a) IETF 6LoWPAN
b) IEFT CoAP
c) RFID/NFC
d) IEEE 802.15.4.LoWPAN

Answer: b
Clarification: IETF CoAP – open application layer specification for constrained nodes supporting HTTP and Web integration.

4. ________ tags, devices, smart phones useful in identification.
a) IETF 6LoWPAN
b) IEFT CoAP
c) RFID/NFC
d) IEEE 802.15.4.LoWPAN

Answer: c
Clarification: RFID/NFC – tags, devices, smart phones useful in product / object identification and gathering associated information.

5. ________ supports low energy radio operation.
a) IETF 6LoWPAN
b) IEFT CoAP
c) RFID/NFC
d) Bluetooth

Answer: d
Clarification: Bluetooth SMART devices support low energy radio operations like, heart rate monitors, blood glucose monitors suitable for health care and fitness etc.

6. ________ specification defining the PHY and MAC layer of low power devices.
a) IETF 6LoWPAN
b) IEFT CoAP
c) RFID/NFC
d) IEEE 802.15.4.LoWPAN

Answer: d
Clarification: IEEE 802.15.4.LoWPAN – specification defining the PHY and MAC layer of low power devices supporting 250 Kb/s data rate, small packet size 127 bytes.

7. 6LoWPAN Adaption layer contains?
a) Header compression
b) Fragmentation
c) Layer 2 forwarding
d) Header compression, Fragmentation, and Layer 2 forwarding

Answer: d
Clarification: 6LoWPAN Adaption Layer:
Header compression
Fragmentation
Layer 2 forwarding.

8. ________ is an application layer protocol for resource constrained devices.
a) CoAP
b) HMTP
c) MQTT
d) TCP/IP

Answer: a
Clarification: CoAP is an application layer protocol (IETF draft) for resource constrained devices. Adheres to the Restful approach for managing the resources and support mapping to HTTP.

9. Adheres to ________ approach for managing resources and support mapping to HTTP.
a) RETful
b) IoT
c) Restful
d) RESTful

Answer: d
Clarification: CoAP is an application layer protocol (IETF draft) for resource constrained devices. Adheres to RESTful approach for managing resources and support mapping to HTTP.

10. ________ resources are identified by Uniform Resource Identifiers.
a) CoAP
b) HMTP
c) MQTT
d) TCP/IP

Answer: a
Clarification: CoAP is an application layer protocol (IETF draft) for resource constrained devices. Adheres to Restful approach for managing resources and support mapping to HTTP. CoAP resources are identified by Uniform Resource Identifiers.

11. Which protocol interacts asynchronously over UDP?
a) HMTP
b) CoAP
c) MQTT
d) TCP/IP

Answer: b
Clarification: CoAP is an application layer protocol (IETF draft) for resource constrained devices. It is Asynchronous message interactions over UDP, Request/Response semantics CoAP resources are identified by Uniform Resource Identifiers.

12. CoAP messages are short.
a) True
b) False

Answer: a
Clarification: CoAP messages are short – 4 bytes header followed by options (Typically, 10-20 bytes header).

13. How many messages types are there in CoAP?
a) 2
b) 5
c) 3
d) 4

Answer: d
Clarification: Four message types are:
Confirmable
Non confirmable
Acknowledgments
Reset.

14. Number of methods in CoAP?
a) 2
b) 5
c) 4
d) 3

Answer: c
Clarification: Four CoAP methods:
GET
POST
PUT
DELETE.

15. WSN stands for __________
a) Wired Sensor Network
b) Wireless Sensor Network
c) Wired Service Network
d) Wireless Service Network

Answer: b
Clarification: WSN – Wireless Sensor Network comprises of motes running a WSN application and a light weight CoAP server.

IOT Multiple Choice Questions on “Temperature Sensor”.

1. What is ESP8266?
a) WIFI module
b) Sensor
c) Board
d) USB cable

Answer: a
Clarification: The ESP8266 WIFI module is used to make an IOT device that plots temperature data on the web.

2. which sensor is LM35?
a) Pressure sensor
b) Humidity sensor
c) Temperature sensor
d) Touch sensor

Answer: c
Clarification: LM35 is a temperature sensor which has 3 legs(Vcc, Vout, GND).

3. How many pins does temperature sensor have?
a) 5 legs
b) 2 legs
c) 4 legs
d) 3 legs

Answer: d
Clarification: The temperature sensor LM35 have 3 legs, the first leg is Vcc, you can connect this to the 3.3V. The middle leg is Vout, where the temperature is read from.

4. Monnit temperature sensor is used for what?
a) Accurate results
b) To measure the temperature at high degree
c) Temperature sensor
d) Pressure sensor

Answer: a
Clarification: Monnit wireless temperature sensor use a thermistor to accurately measure temperature. These sensors are perfect for monitoring ambient temperatures around the sensors physical location.

5. Which of the following is the Wireless battery-free sensor?
a) LM35
b) RFM3200
c) ESP8266
d) DHT11

Answer: b
Clarification: RFM3200 is a wireless battery-free temperature sensor. This flexible sensor is designed to monitor the environment and material temperature in a wide range of settings.

6. Which sensor is used for monitor electric distribution and switching equipment temperature?
a) LM35
b) ESP8266
c) DHT11
d) RFM3200

Answer: d
Clarification: It is a battery-free sensor. This lug mounted sensor is designed to monitor electric distribution and switching equipment temperatures. Typical applications include building power distributions, data centers, etc.

7. Electric motor protection has which sensor?
a) Pressure sensor
b) Touch sensor
c) Temperature sensor
d) Humidity sensor

Answer: c
Clarification: Electric motor protection has a temperature sensor in it to verify the temperature which is exceeding its limits or not.

8. What is DS18B20?
a) Pressure sensor
b) Touch sensor
c) Humidity sensor
d) Temperature sensor

Answer: d
Clarification: It measures temperature and sends an email if the temperature goes under a threshold.

9. What is STSC1?
a) Pressure sensor
b) Temperature sensor
c) Touch sensor
d) Humidity sensor

Answer: b
Clarification: The STSC1 focuses on the application that requires very precise temperature measurement. It is suitable for consumer electronics, Internet of Things and smart home applications, as well as for data loggers and thermostats.

10. Line of sight of wireless sensor tag is ________
a) 750ft
b) 700ft
c) 500ft
d) 550ft

Answer: b
Clarification: Line of sight range up to 700 ft, requires Ethernet hub. Temperature logging and notification with 0.02^oC resolution is temperature sensor.

11. A ________ is thermally sensitive resistor that exhibits a large change in resistance.
a) Thermistor
b) Resistance Thermometer
c) Thermo couple
d) Semiconductor based sensor

Answer: a
Clarification: A thermistor is a thermally sensitive resistor that exhibits a large, predictable, and precise change in resistance correlated to variations in temperature.

12. ________ measures temperature by correlating the resistance of the RTD with temperature.
a) Thermistor
b) Resistance Thermometer
c) Thermo couple
d) Semiconductor based sensor

Answer: b
Clarification: An RTD, measures temperature by correlating the resistance of the RTD with temperature. An RTD consists of a film or, for greater accuracy, a wire wrapped around a ceramic or glass core.

13. ________ consists of two different metals connected at two points.
a) Thermistor
b) Resistance Thermometer
c) Thermocouple
d) Semiconductor based sensor

Answer: c
Clarification: Thermocouple consists of two different metals connected at two points. The varying voltage between these two points reflects proportional changes in temperature.

14. Which type of temperature sensor is placed in Integrated Circuits?
a) Thermistor
b) Resistance Thermometer
c) Thermocouple
d) Semiconductor based sensor

Answer: d
Clarification: A semiconductor based temperature sensor is placed on Integrated Circuits. They are linear but have the lowest accuracy.

15. Which sensor is linear and low accuracy?
a) Thermistor
b) Resistance Thermometer
c) Thermocouple
d) Semiconductor based sensor

Answer: d
Clarification: A semiconductor based temperature sensor is placed on Integrated Circuits. They are linear but have the lowest accuracy.

IOT Multiple Choice Questions on “IP Address”.

1. What is the format of IP address?
a) 34 bit
b) 64 bit
c) 16 bit
d) 32 bit

Answer: d
Clarification: The format of an IP address is a 32-bit numeric address written as four numbers separated by periods. Each number can be zero to 255. For example, 1.160.10.240 could be an IP address.

2. Version 6 of IP address has how many bits.
a) 64 bits
b) 128 bits
c) 32 bits
d) 256 bits

Answer: b
Clarification: Because of the growth of the Internet and the depletion of available IPV4 address, a new version of IP(IPV6), using 128 nits for the IP address, was developed in 1995, and standardized as RFC 2460 in 1998. IPV6 deployment has been ongoing since the mid 2000s.

3. IANA stands for __________
a) Internet Assigned Numbers Authority
b) Internal Assigned Numbers Authority
c) Internet Associative Numbers Authoritative
d) Internal Associative Numbers Authority

Answer: a
Clarification: The IP address space is managed globally by the Internet Assigned Numbers Authority(IANA), and by five Regional Internet Registries(RIR) responsible in their designated territories for assignment to end users and local Internet registries, such as Internet services providers.

4. RIR stands for ________
a) Regional Internal Registries
b) Registries Internet Regional
c) Regional Internet Registries
d) Registries Internal Regional

Answer: c
Clarification: The IP address space is managed globally by the Internet Assigned Numbers Authority(IANA), and by five Regional Internet Registries(RIR) responsible in their designated territories for assignment to end users and local Internet registries, such as Internet services providers.

5. Geolocation software is used by host.
a) True
b) False

Answer: a
Clarification: The header of each IP packet contains the IP address of the sending host, and that of the destination host. A host may use geolocation software to deduce the geolocation of it communication peer.

6. How many version /s of IP’s are there?
a) 4 versions
b) 3 versions
c) 2 versions
d) 1 version

Answer: c
Clarification: Two versions of the Internet Protocol are in common use in the Internet today. The original version of the Internet Protocol for use in the Internet is Internet Protocol Version 4, first installed in 1983.

7. VLSM stands for ________
a) Version Length Subnet Masking
b) Variable Length Subnet Masking
c) Variable Length Surface Masking
d) Version Length Surface Masking

Answer: b
Clarification: The class system of the address space was replaced with Classless Inter – Domain Routing in 1993. CIDR is based on variable length Subnet Masking to allow allocation and routing based on arbitrary length prefixes.

8. Many desktops and operating systems include which protocol?
a) IPv6 protocol
b) IPv4 protocol
c) Both IPv6 and IPv4 protocol
d) IPv3 protocol

Answer: a
Clarification: All modern desktop and enterprise server operating systems include native support for the IPv6 protocol, but it is not yet widely deployed in other devices, such as residential networking routers, voice over IP(VoIP) and multimedia equipment, and network peripherals.

9. The design of the Internet protocol suites adhere to the ________ principle.
a) Data corruption
b) Connection oriented
c) End to End principle
d) Reliability

Answer: c
Clarification: The design of the Internet protocol suite adheres to the end to end principle, a concept adapted from the CYCLADES project. Under the end to end principle, the network infrastructure is considered inherently unreliable at any signal network element or transmission medium and is dynamic in terms of availability of links and notes.

10. ___________ adjusts the segment size to be smaller than MTU.
a) Internet Protocol 6
b) User Datagram Protocol
c) Internet Protocol 4
d) Transmission Control Protocol

Answer: d
Clarification: The Transmission Control Protocol is an example of a protocol that adjusts its segment size to be smaller than the MTU.

IOT Multiple Choice Questions on “Sending and Receiving Data in Real Time Through Internet”.

1. _________ allows us to control electronic components
a) RETful API
b) RESTful API
c) HTTP
d) MQTT

Answer: a
Clarification: RETful API that allows us to control electronic components connected to our Intel Galileo Gen 2 board through HTTP requests.

2. MQTT stands for _____________
a) MQ Telemetry Things
b) MQ Transport Telemetry
c) MQ Transport Things
d) MQ Telemetry Transport

Answer: d
Clarification: MQTT was known as MQ Telemetry Transport protocol. MQTT is a lightweight protocol that runs on top of the TCP/IP protocol.

3. MQTT is better than HTTP for sending and receiving data.
a) True
b) False

Answer: a
Clarification: We want to send and receive data in real time through internet and RESTful API is not the most appropriate option to do this. Instead, we will work on MQTT which is lighter than HTTP.

4. MQTT is _________ protocol.
a) Machine to Machine
b) Internet of Things
c) Machine to Machine and Internet of Things
d) Machine Things

Answer: c
Clarification: The MQTT protocol is a machine to machine and Internet of thing connectivity protocol.

5. Which protocol is lightweight?
a) MQTT
b) HTTP
c) CoAP
d) SPI

Answer: a
Clarification: MQTT is a lightweight protocol that runs on top of the TCP/IP protocol and works with publish subscribe mechanism.

6. PubNub publishes and subscribes _________ in order to send and receive messages.
a) Network
b) Account
c) Portal
d) Keys

Answer: d
Clarification: It is necessary to generate our PubNub publishes and subscribes keys in order to send and receive messages in the network.

7. By clicking which key the PubNub will display public, subscribe, and secret keys.
a) Pane
b) Demo Keyset
c) Portal
d) Network

Answer: b
Clarification: Click on Demo keyset pane and PubNub will display public, subscribe, and secret keys. We must copy and paste each of these keys to use them in our code that will publish messages and subscribe to them.

8. The messageChannel class declares the _________ class attribute that defines the key string.
a) command_key
b) command-key
c) commandkey
d) Key_command

Answer: a
Clarification: The messageChannel class declares the command_key class attribute that defines the key string that defines what the code will understand as the command.

9. _________ method saves the received arguments in three attributes.
a) __Init
b) Init__
c) __Init__
d) _init_

Answer: c
Clarification: __Init__ method saves the received arguments in three attributes with the same names.

10. _________ and _________ saves the publish and subscribe keys that we have generated with the PubNub Admin portal.
a) public_key and subscribe_key
b) Public-key and subscribe-key
c) publickey and subscribekey
d) Key_public and key_subscribe

Answer: a
Clarification: Then, the constructor declares two local variables: public_key and subscribe_key. These local variables save the public and subscribe keys that we had generated with the PubNub Admin portal.

11. _________ specifies the function that will be called when there is a new message received from the channel.
a) Reconnect
b) Error
c) Connect
d) Callback

Answer: d
Clarification: The call to this message specifies many methods declared in the MessageChannel class
Callback: specifies the function that will be called when there is a new message received from the channel.

12. _________ specifies the function that will be called on an error event.
a) Callback
b) Error
c) Connect
d) Reconnect

Answer: b
Clarification: The call to this message specifies many methods declared in the MessageChannel class
Error: specifies the function that will be called on an error event.

13. _________ Specifies the function that will be called when a successful connection with the PubNub cloud.
a) Callback
b) Error
c) Connect
d) Reconnect

Answer: c
Clarification: The call to this message specifies many methods declared in the MessageChannel class
Connect: specifies the function that will be called when a successful connection with the PubNub cloud.

14. _________ specifies the function that will be called when a successful re-connection is completed.
a) Callback
b) Error
c) Connect
d) Reconnect

Answer: d
Clarification: The call to this message specifies many methods declared in the MessageChannel class
Reconnect: specifies the function that will be called when a successful re-connection is completed with the PubNub cloud.

15. ___________ specifies the function that will be called when the client disconnects.
a) Callback
b) Error
c) Connect
d) Disconnect

Answer: d
Clarification: The call to this message specifies many methods declared in the MessageChannel class
Disconnect: specifies the function that will be called when the client disconnects from the PubNub cloud.

IOT Multiple Choice Questions on “Designing Material Behavior”.

1. Each object represents _________ in virtual network.
a) Thing
b) Device
c) Node
d) Small object

Answer: c
Clarification: Each object represents a node in a virtual network, continuously transmission a large volume of data itself and its surroundings – we call these digital footprints a code halo.

2. Continuous transmission of data is called as ____________
a) Ac-halloc
b) Code halo
c) Halo code
d) Halloc-ac

Answer: b
Clarification: Each object represents a node in a virtual network, continuously transmission a large volume of data itself and its surroundings – we call these digital footprints a code halo.

3. BoT stands for ___________
a) Base of Things
b) Built of Things
c) Benefits of Things
d) Business of Things

Answer: a
Clarification: According to Gartner, “the installed base of things will grow to 26 billion units in 2020, a near 30 fold increase from 0.9 billion units in 2009.”

4. An informed manufacturing organization contains __________ elements.
a) 4 elements
b) 3 elements
c) 5 elements
d) 6 elements

Answer: a
Clarification: An informed manufacturing organization contains four elements:
Informed products
Processes
People and
Infrastructure.

5. The manufacturing elements provide _________ manufacturing processes.
a) Automated
b) Intelligent
c) Streamlined
d) Automated, Intelligent, and Streamlined

Answer: d
Clarification: An informed manufacturing organization contains four elements: Informed products, Processes, People and Infrastructure. These essential elements of manufacturing are converging like never before, creating a more automated, intelligent, and streamlined manufacturing process.

6. Informed _________ will enable machines to take autonomous action.
a) Product
b) People
c) Processes
d) Infrastructure

Answer: a
Clarification: Advanced sensors, controls, and software applications work together to obtain and share real time information as finished goods make their way down the production line. Informed product will enable machines to take autonomous action.

7. Informed __________ will provide intelligent design, operation as well as safety.
a) Product
b) People
c) Processes
d) Infrastructure

Answer: b
Clarification: Informed people will people will provide intelligent design, operations and maintenance, as well as higher quality service and safety.

8. Informed _______ lead to flexible and adaptable supply chain.
a) Product
b) People
c) Processes
d) Infrastructure

Answer: c
Clarification: By emphasizing bi directional information sharing across the global manufacturing value chain from supplier to customer-Informed process lead to flexible and adaptable supply chain.

9. Informed _________ will better manage complexities and enable more efficient manufacturing of goods.
a) Product
b) People
c) Processes
d) Infrastructure

Answer: d
Clarification: Using smart infrastructure components that interface with mobile devices, products and people, informed infrastructure will better manage complexities and enable more efficient manufacturing of goods.

10. Which possibility is based on combination of materials and information flow?
a) Automotive
b) Energy and utilities
c) Transportation and logistics
d) Connected supply chain

Answer: c
Clarification: Transportation and Logistics: Logistics and distribution networks are based on a combination of materials and information flow between various supply chain participants.

IOT Multiple Choice Questions on “IoT Architecture for Smartcities”.

1. The IoT platforms are mainly divided into how many types
a) 3 types
b) 5 types
c) 4 types
d) 2 types

Answer: c
Clarification: The IoT platforms could be divided into four types:
eGovermnent related
Enterprise-based
Company based
Business oriented platform.

2. In order to promote _________ the government should employ more management.
a) eGovermnent related
b) Enterprise-based
c) Company based
d) Business oriented platform

Answer: a
Clarification: In order to promote the eGovermnent information system evolution and improve their management, the local/regional/ national governments should employ more management intelligence by utilizing an IoT platform.

3. In order to improve their competitiveness and services assurance, the ________ require independently funded IoT projects.
a) eGovermnent related
b) Enterprise-based
c) Company based
d) Business oriented platform

Answer: b
Clarification: In order to improve their competitiveness and services assurance, the market oriented enterprises and companies require independently funded IoT projects.

4. The ________ may become an important facilitator and stimulate for the modern economy.
a) eGovermnent related
b) Enterprise-based
c) Company based
d) Business oriented platform

Answer: d
Clarification: The pure business oriented IoT may become an important facilitator and stimulus for the modern economy, by attracting investments and developing strategic industry sectors.

5. ITS stands for _________
a) Internet Travel Services
b) Internet Transportation Security
c) Intelligent Transportation Security
d) Intelligent Transportation Services

Answer: d
Clarification: The center is linked with set of services, intelligent transportation services city fire protection and security; corporation medical services; commercial and tourism services; and tax and fees payment services.

6. The autonomous ________ based IoT platforms are used for internal management of the corresponding enterprise.
a) eGovermnent related
b) Enterprise-based
c) Company based
d) Business oriented platform

Answer: c
Clarification: The autonomous enterprise based and company based IoT platforms are used for internal management of the corresponding enterprise and as such are supported by independent investments.

7. Does information resource management need to be integrated into market management?
a) True
b) False

Answer: a
Clarification: The enterprise and company based platforms ultimately serve the society. Therefore, information resource management need to be integrated into market management.

8. The use of RFID in product logistics may realize automatic acquisition of logistics information.
a) True
b) False

Answer: a
Clarification: The use of RFID in product logistics may realize automatic acquisition of logistics information, logo recognition, as well as reliable cargo delivery, safe customs, and tracking visualization.

9. An IoT ________ center is envisaged as an important part of the generic IoT platform to unify the organization.
a) Individual Information
b) Individual Integration
c) Integrated Information
d) Individual and Integrated Information

Answer: c
Clarification: An IoT Integrated Information centre is envisaged as an important part of the generic IoT platform to unify the organization, implementation, and planning of the integrated IoT application.

10. The core element of architecture of smart city is ________
a) Mobile Unified Service
b) Urban Application Platform
c) Management center
d) Integrated Information Provider

Answer: d
Clarification: An IoT platform, which could serve as a generic architectural foundation for a smart city development has an Integrated Information Provider as its core element.

11. The core element is operated by ________
a) PaaS
b) IoT service Provider
c) SaaS
d) IaaS

Answer: b
Clarification: An IoT platform, which could serve as a generic architectural foundation for a smart city development has a Integrated Information Provider as its core element. Its core element is operated by an IoT Service Provider.

12. Supplementary platforms in the architecture provide support for these services.
a) True
b) False

Answer: a
Clarification: Supplementary platforms in the architecture provides support for these services include:
A cloud computing data center
A management center
An application platform.

13. Who will use their own IoT business models?
a) PaaS
b) SaaS
c) IaaS
d) Service provider

Answer: d
Clarification: IoT service provider will use their own IoT business models, architectures, and operating platforms.

14. Which approach is used in this architecture?
a) Top down approach
b) Bottom up approach
c) Top down and Bottom Up
d) Neither Top down nor bottom up

Answer: a
Clarification: For the implementation of IoT architecture for smart cities, the top down approach is used.

15. IoT promotes the creation of IoT terminal industry ________
a) Devices
b) Network
c) Clusters
d) Things

Answer: c
Clarification: IoT platform promotes the creation of IoT terminal Industry clusters, which will greatly attract commercial capital investments in the IoT modern services.