IOT(Internet of Things) Multiple choice Questions and Answers

IOT(Internet of Things) Multiple choice Questions and Answers 

1. Choose the correct option based on the following two statements on the HART Physical Layer.
Statement-I: It is derived from the IEEE 802.15.4 protocol.
Statement-II: It operated only in the 2.4 GHz ISM band.

A) Statement-I True and Statement-II False
B) Statement-I False and Statement-II True
C) Both Statements I and II are False
D) Both Statements I and II are True

ANSWER= (D) Both Statements I and II are True

 

2. Which of the following characteristic of HART Data Link Layer helps to increase reliability and security?

A) Channel Hopping and Channel Blacklisting
B) Channel Crunching and Jamming
C) Scattering
D) All of these

ANSWER= (A) Channel Hopping and Channel Blacklisting

 

3. State True or False
Statement: Channel blacklisting in HART identifies channels consistently affected by interference and removes them from use.

A) True
B) False

ANSWER= (A) True

 

4. At the MAC layer –
Statement-I: WirelessHART utilizes Time Division Multiple Access (TDMA).
Statement-II: ZigBee applies Carrier Sense Multiple Access with Collision Detection (CSMA/CD).

A) Statement-I True and Statement-II False
B) Statement-I False and Statement-II True
C) Both Statements I and II are False
D) Both Statements I and II are True

ANSWER= (D) Both Statements I and II are True

 

5. NFC works on the principal of

A) Pressure
B) Magnetic Induction
C) Both (a) and (b)
D) None of these

ANSWER= (B) Magnetic Induction

 

6. Bluetooth technology is based on Ad-hoc technology also known as?

A) Ad-hoc Piconets
B) Ad-hoc Micronets
C) Ad-hoc Nanonets
D) None of these

ANSWER= (A) Ad-hoc Piconets

 

7. Class 2 Bluetooth radios have a range of about?

A) 1 m
B) 2 m - 5 m
C) 10 m
D) None of these

ANSWER= (C) 10 m

 

8. Which of the following is NOT a phase in Bluetooth connection establishment?

A) Inquiry
B) Booking
C) Paging
D) Connection

ANSWER= (B) Booking

 

9. Zwave can support ___________ number of nodes in a network?

A) 232
B) 233
C) 234
D) 235

ANSWER= (A) 232

 

10. Topologies allowed in ISA 100.11A are?

A) Ring Only
B) Mesh and Hybrid
C) Mesh and Ring
D) Mesh and Star/Tree

ANSWER= (D) Mesh and Star/Tree

 

11. An example of an Operating System (OS) that a sensor node can have is?

A) MicronOS
B) TinyOS
C) Both (a) and (b)
D) None of these

ANSWER= (B) TinyOS

 

12. Which of the following is NOT a constraint on sensor nodes?

A) Must consume extremely low power
B) Be non-autonomous
C) Be adaptive to environment
D) None of these

ANSWER= (B) Be non-autonomous

 

13. Nodes in WSNs that exhibit features of failed nodes but they can also send false routing messages which are a threat to the integrity of the network are called?

A) Normal Nodes
B) Badly Failed Nodes
C) Failed Nodes
D) Selfish Nodes

ANSWER= (B) Badly Failed Nodes

 

14. Which of the following are the two popular schemes to re-establish the connectivity between dumb nodes with others?

A) CoARD and CoRD
B) CoRAD and CoARD
C) CoRD and CoRAD
D) None of these

ANSWER= (C) CoRD and CoRAD

 

15. Full form of WBAN is?

A) Wireless Body Area Network
B) Wirelessed Body Area Network
C) Wireless Bodily Area Network
D) None of these

ANSWER= (A) Wireless Body Area Network