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IOT MCQ with Answer for Exam and Interview Preperation Part 2.

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IOT MCQ with Answer for Exam and Interview Preperation.

IOT MCQ (Multiple Choice Question) with answer for exam and interview preperation.


1. What is NFC?

a) Short distance wireless communication technology

b) enhancement of ISO/IEC14443 standard

c) both a & b

d) cannot say

Answer: c

Explantion :- NFC is Short distance wireless communication technology and Enhancement of ISO/IEC 14443.


2. NFC stands for 

a) Near Fast Communication

b) Near Field Communication

c) Near Field Customer

d) Near Field Connection

Answer: b

Explantion :- NFC Stands for Near Field Communication.

 3. HART stands for 

 a) Highway Addressable Remote Transducer

 b) High Addressable Remote Transducer

 c) High Application Remote Transducer

 d) Highway Application Remote Transducer

 Answer: a

Explanation :- HART Stands for Highway Addressable Remote Transducer.

4. Which of the following is application of IEEE 802.14.5 

a) Zigbee

b) wireless HART

c) both a&b

d) none

Answer: c

5. Zigbee commonly deployed in dash topology to extend coverage by relaying sensor data over multiple sensor nodes.

a) star 

b) mesh

c) mix

d) none

Answer: b

Explanation :- Zigbee commonly deployed in mesh topology to extend coverage by relaying sensor data over multiple sensor nodes.

6. dash allows us to control electronic components

a) RETful API

b) RESTful API

c) HTTP

d) MQTT 

Answer: a

Explanation :- REYful API allows us to control electronic component.

7. MQTT stands for 

a) MQ Telemetry Things

b) MQ Transport Telemetry

c) MQ Transport Things

d) MQ Telemetry Transport 

Answer: d

Explanation :- MQTT stands for MQ Telemetry Transport.

8. MQTT is better than HTTP for sending and receiving data.

a) True

b) False

Answer:- a

Explantion :- Yes, MQTT is better than HTTP for sending and receiving data.

9. MQTT is dash protocol.

a) Machine to Machine

b) Internet of Things

c) Machine to Machine and Internet of Things

d) Machine Things

 Answer: d

Explantion :- MQTT is Machine Things protocol.

10. Which protocol is lightweight?

a) MQTT

b) HTTP

c) CoAP

d) SPI

Answer: a

Explanation :- MQTT is lightweight protocol.

11. PubNub publishes and subscribes  dash in order to send and receive messages.

a) Network

b) Account

c) Portal

d) Keys

Answer: d

Explanation :- PubNub publishes and subscribes Keys in order to send and receive messages.

12. CoAP is specialized in

a) Internet applications

b) Device applications

c) Wireless applications

d) Wired applications

 Answer: a

Explantion :- CoAP is specialized in internet applications.

13. CoAP is designed for use between devices on the same constrained network.

a) True

b) False

Answer: a

14. Which layer is CoAP?

a) Control layer

b) Transport layer

c) Service layer

d) Application layer 

Answer: c

15. CoAP provides which of the following requirements?

a) Multicast support and simplicity

b) Low overhead and multicast support

c) Simplicity and low overhead

d) Multicast support, Low over head, and simplicity

Answer: d

Explanation :- CoAP provides Multicast support, Low over head and symplicity requirments.

16. Do CoAP has memory?

a) True

b) False

Answer: a

Explanation :- Yes, CoAP has memory.

17. What is the RAM and ROM size in CoAP?

a) 100 KiB of RAM and 10 KiB of ROM

b) 10 KiB of RAM and 100 KiB of ROM

c) 10 KiB of RAM and 250 KiB of ROM

d) 250 KiB of RAM and 10 KiB of ROM

Answer: b

Explanation :- In CoAP RAM size is 10 KiB while ROM size is 100 KiB.

18. CoAP feels very much like HTTP.

a) True

b) False

Answer: a

Explanation :- CoAP feels very much like HTTP.

19. Which is an open standard?

a) HTTP

b) MQTT

c) XMPP

d) CoAP

Answer: d

Explanation :- CoAP is an open standard.

20. HART stands for

a) Highway Addressable Remote Transducer

b) High Addressable Remote Transducer

c) High Application Remote Transducer

d) Highway Application Remote Transducer

Answer: a

21. LTP stands for

a) Lean Transducer Protocol

b) Lean Transport Protocol

c) Layer Transport Protocol

d) Layer Transducer Protocol

Answer: b

22. CoAP is a specialized dash protocol.

a) Web Transfer

b) Power

c) Application

d) Resource

Answer: a

23. MQTT is mainly used for

a) M2M communication

b) Device communication

c) Internet communication

d) Wireless communication

Answer: a

24. Which is an open standard?

a) CoAP

b) MQTT

c) XMPP

d) HTTP

Answer: b

25. MQTT is dash oriented.

a) Data

b) Message

c) Network

d) Device

Answer: b

26. Does MQTT support security.

a) True

b) False

Answer: a

27. Standard ports of MQTT are

a) I2C

b) SSL

c) USART

d) TCP/IP

Answer :d

28. Full form of MQTT

a) Message Queuing Telemetry Transport

b) Message Queuing Telegram Transport

c) Message Queue Telegram Transport

d) Message Queue Telemetry Transport

Answer:c

29. Does HTTP protocol take more power.

a) True

b) False

Answer: a

30. What does HTTP do?

a) Enables network resources and reduces perception of latency

b) Reduces perception of latency and allows multiple concurrency exchange

c) Allows multiple concurrent exchange and enables network resources

d) Enables network resources and reduces perception of latency and Allows multiple concurrent exchange

Answer :d

31. A request from client is basically made of 

a) Method

b) Task

c) Event

d) Signal

Answer: a

32. Response is made up of a dash status code.

a) two-digit

b) three-digit

c) five-digit

d) six-digit

Answer: b

33. Which protocol provides server push?

a) SPI

b) MQTT

c) CoAP

d) HTTP

Answer: d

34. HTTP expands?

a) HyperText Transfer Protocol

b) HyperTerminal Transfer Protocol

c) HyperText Terminal Protocol

d) HyperTerminal Text Protocol

Answer: a

35. How many types of message formats are there in HTTP protocol?

a) 4 types

b) 3 types

c) 2 types

d) 5 types

Answer: c

36. Statue line is present in which message format?

a) Request message

b) Response message

c) Both request and response

d) Neither request nor response

Answer: b

37. Request field is present in which message format?

a) Request message

b) Response message

c) Both request and response

d) Neither request nor response

Answer: a

38. Does HTTP protocol have dash handshakes.

a) 2 way

b) 1 way

c) 3 way

d) 5 way

Answer: c

39. Does HTTP has pipelining.

a) True

b) False

Answer: a

40. What is the sensor/protocol used in GSN?

a) HTTP protocol

b) CoAP protocol

c) MQTT protocol

d) XMPP protocol

Answer:b

41. AMQP stands for

a) Advanced Message Queuing Protocol

b) Application Message Queuing Protocol

c) Advanced Mailing Queuing Protocol

d) Application Mailing Queuing Protocol

 Answer : a

42. The best example for interoperability at the application layer is?

a) Data

b) Net

c) File

d) Web

Answer:d

43. Services provided by application layer?

a) Web chat

b) Error control

c) Connection services

d) Congestion control

Answer:a

44. How many protocols are used in the application layer?

a) 15

b) 10

c) More than 15

d) More than 10

 Answer: c

45. What is the main responsibility of application layer?

a) Error handling

b) Web surfing

c) Virtual terminal

d) Network data sharing

Answer: a

46. Reoccurring problems can be achieved using

a) DNS

b) Telnet

c) BOOTP

d) Patterns

Answer:d 

47. Application layer is the ending of the data layer.

a) True

b) False

Answer: a

48. Application layer interacts directly with the

a) front user

b) end user

c) sensors

d) wired link

Answer : b

49. RPL stands for

a) Routing Protocol for Low-Power and Lossy Network

b) Routing Protocol for Low-Power and Least Network

c) Routing Principle for Low-Power and Lossy Network

d)Routing Protocol for Low-Power and Least Network

Answer : A

50. Which protocol is used to link all the devices in the IoT?

a) TCP/IP

b) Network

c) UDP

d) HTTP

Answer : a

51. dash 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

52. dash enables open application layer for constrained nodes.

a) IETF 6LoWPAN

b) IEFT CoAP

c) RFID/NFC

d) IEEE 802.15.4.LoWPAN

Answer: b

53. dash tags, devices, smart phones useful in identification.

a) IETF 6LoWPAN

b) IEFT CoAP

c) RFID/NFC

d) IEEE 802.15.4.LoWPAN

Answer : c

54. dash supports low energy radio operation.

a) IETF 6LoWPAN

b) IEFT CoAP

c) RFID/NFC

d) Bluetooth

Answer : d

55. dash 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

56. 6LoWPAN Adaption layer contains?

a) Header compression

b) Fragmentation

c) Layer 2 forwarding

d) Header compression, Fragmentation, and Layer 2 forwarding

Answer: d

57. dash is an application layer protocol for resource constrained devices.

a) CoAP

b) HMTP

c) MQTT

d) TCP/IP

Answer: a

58. Adheres to dash approach for managing resources and support mapping to HTTP.

a) RETful

b) IoT

c) Restful

d) RESTful

Answer : d

59. dash resources are identified by Uniform Resource Identifiers.

a) CoAP

b) HMTP

c) MQTT

d) TCP/IP

Answer : a

60. CoAP messages are short.

a) True

b) False

Answer: a

61. Which protocol interacts asynchronously over UDP?

a) HMTP

b) CoAP

c) MQTT

d) TCP/IP

Answer: b

62. How many messages types are there in CoAP?

a) 2

b) 5

c) 3

d) 4

Answer : d

63. How many messages types are there in CoAP?

a) 2

b) 5

c) 3

d) 4

Answer: c

64. 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

65. The original IEEE 802 MAC address comes from

a) MAC address

b) IP address

c) Ethernet address

d) Http

Answer : c

66. Web applications support dash API.

a) RESTful

b) RESful

c) Class

d) Lua

Answer: a

67. Version 6 of IP address has how many bits.

a) 64 bits

b) 128 bits

c) 32 bits

d) 256 bits

Answer: b

68. 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

69. Application layer interacts directly with the

a) front user

b) end userc) sensors

d) wired link

Answer : b

70. IPv6 has a larger address space of

a) 216

b) 2128

c) 232

d) 28

Answer: b

71. In IPv6, real-time audio or video, particularly in digital form, requires resources 

such as

a) Fixed Bandwidth

b) Variable Bandwidth

c) High Bandwidth

d) Low Bandwidth

Answer : c

72. In practical IPv6 application, a technology encapsulates IPv6 packets inside IPv4 

packets, this technology is called

a) Tunneling

b) Hashing

c) Routing

d) NAT

Answer: a

73. The header length of an IPv6 datagram is

a) 10bytes

b) 25bytes

c) 30bytes

d) 40bytes

Answer : d

74. In the IPv6 header, the traffic class field is similar to which field in the IPv4 

header?

a) Fragmentation field

b) Fast switching

c) TOS field

d) Option field

Answer : c

75. Which are the features present in IPv4 but not in IPv6?

a) Fragmentation

b) Header checksum

c) Options

d) All of the mentioned

Answer : d

76. IPv6 is designed to allow extension of the

a) Protocol

b) Dataset

c) Headers

d) Routes

Answer: a

77. In IPv6, base header can be followed by, up to

a) Six Extension Layers

b) Six Extension Headers

c) Eight Extension headers

d) Eight Extension layers

Answer: b

78. Requests package is very popular dash Library.

a) MQTP

b) SMTP

c) CoAP

d) HTTP

Answer : d

79. Requests package is very popular HTTP library for

a) C

b) Embedded c

c) Python

d) Java

Answer :c

80. Does HTTP protocol take more power.

a) True

b) False

Answer: a

81. How many messages will HQTTP will send in 1024?

a) All

b) 256

c) 240

d) 514

Answer: c

82. How many messages will HTTP will send per hour?

a) 1,708

b) 160,278

c) 3,628

d) 263,314

Ans : a ( Not sure )

83. IP is connectionless.

a) True

b) False

Answer : a

84. Bluetooth operates at short distances.

a) True

b) False

Answer : a

85. dash layer is the communication layer that connects the IoT devices with WAN.

a) Internet layer

b) Application layer

c) Sensor layer

d) Network layer

Answer : d

86.

86. What is the format of IP address?

a) 34 bit

b) 64 bit

c) 16 bit

d) 32 bit

Answer: d

87. MQTT is better than HTTP for sending and receiving data.

a) True

b) False

Answer: d

88. MQTT is dash protocol.

a) Machine to Machine

b) Internet of Things

c) Machine to Machine and Internet of Things

d) Machine Things

Answer: c

89. . Which protocol is lightweight?

a) MQTT

b) HTTP

c) CoAP

d) SPI

Answer : a

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