IOT(Internet of Things) Multiple choice Questions and Answers

IOT(Internet of Things) Multiple choice Questions and Answers 

1. Which of the following handles packets, paging and inquiry in Bluetooth?

A) L2CAP
B) Baseband
C) RFComm
D) Physical Radio

ANSWER= (B) Baseband

 

2. Which of the following incorporates channel hopping after every packet transmission?

A) Zigbee
B) WirelessHART
C) 6LoWPAN
D) None of these

ANSWER= (B) WirelessHART

 

3. In “X” protocol, a central network controller device sets‐up a network with 1 Network ID and multiple node IDs for the devices in it. The nodes with different Network IDs cannot communicate with each other. What is “X”?

A) Z-wave
B) Zigbee
C) Bluetooth
D) ISA 100.11A

ANSWER= (A) Z-wave

 

4. In the context of Sensor Web, SensorML stands for _____________.

A) Sensor Modeling language
B) Sensor Machine language
C) Sensor Markup language
D) None of the above

ANSWER= (A) Sensor Modeling language

 

5. Which of the following protocol is best suited to provide interference-free communication while minimizing latency and ensuring quality of service?

A) WirelessHART
B) ISA100.11A
C) Both WirelessHART and ISA100.11A
D) None of these

ANSWER= (B) ISA100.11A

 

6. Which of the following solution approach is used to overcome the limitation of ineffective wakeup and sensing under rare event monitoring scenario in social sensing?

A) Duty-cycle management
B) Sleep-cycle management
C) Packet transmission management
D) Both duty-cycle and sleep-cycle management

ANSWER= (A) Duty-cycle management

 

7. Which of the following technique Bluetooth master uses to avoid collisions during transmission in a Piconet?

A) Frequency Division Multiplexing
B) Frequency Hopping Spread Spectrum
C) Time Division Multiplexing
D) Direct Sequence Spread Spectrum

ANSWER= (C) Time Division Multiplexing

 

8. Which of the following limitation is faced by total co-operation in Wireless Ad Hoc and Sensor Networks?

A) Decreasing network throughput
B) Decreasing energy
C) Both (a) and (b)
D) No limitation exists

ANSWER= (B) Decreasing energy

 

9. Which of the following can function over a reliable packet transfer protocol?

A) L2CAP
B) Service Discovery Protocol
C) RFComm
D) Physical Radio

ANSWER= (B) Service Discovery Protocol

 

10. In which of the following mode, NFC devices can act as both readers as well as tags?

A) Reader/writer
B) P2P
C) Emulation
D) NFC devices can’t act as both readers as well as tags

ANSWER= (C) Emulation

 

11. In WSN, Information theoretic self‐management (INTSEM) controls the transmission rate of a node by adjusting a node’s ____________.

A) Duty cycle
B) Lifetime
C) Sleep time
D) Can’t control the transmission rate

ANSWER= (C) Sleep time

 

12. Which of the following layer of ISA 100.11A supports mesh routing?

A) Network layer
B) Data link layer
C) Transport layer
D) MAC layer

ANSWER= (B) Data link layer

 

13. Which of the following is used to avoid interference-prone channels in HART?

A) Channel blacklisting
B) Channel switching
C) Channel hopping
D) Super-frames

ANSWER= (B) Channel switching

 

14. When the devices are not in range, messages are routed through different nodes to bypass obstructions created by household appliances or layouts. Which of the following exhibit such characteristic of avoiding radio dead-spots?

A) Bluetooth
B) 6LoWPAN
C) Z-wave
D) Zigbee

ANSWER= (C) Z-wave

 

15. Which of the following is TRUE in terms of power (in mW) and range (in m) of the classes of Bluetooth devices?

A) Class-1: Power=100mW, Range=100m
B) Class-2: Power=2.5 mW, Range=100m
C) Class-1: Power=2.5 mW, Range=100m
D) Class-2: Power=100 mW, Range=100m

ANSWER= (A) Class-1: Power=100mW, Range=100m