IOT(Internet of Things) Multiple choice Questions and Answers

IOT(Internet of Things) Multiple choice Questions and Answers 

1. In AMQP, which of the following functionality defines its component “exchange”?

A) linkage between various queues
B) receives messages from various queues
C) defines rules for message routing to various queues
D) routing the messages to various queues

ANSWER= (D) routing the messages to various queues

 

2. Which of the following is designed to have low overhead and better scalability in terms of dense networks?

A) LOADng
B) RPL
C) Both LOADng and RPL
D) AODV

ANSWER= (B) RPL

 

3. Which of the following AMQP frame type controls the message flow rate?

A) Transfer
B) Flow
C) Control
D) Disposition

ANSWER= (B) Flow

 

4. Does 6LoWPAN allow interoperability between IEEE802.15.4-based wireless devices and other IP-based devices?

A) Yes
B) No

ANSWER= (A) Yes

 

5. Does MQTT support event-driven architecture?

A) Yes
B) No

ANSWER= (A) Yes

 

6. Which of the following is the acronym for “Extensible Messaging and Presence Protocol”?

A) EMPP
B) XMLP
C) XMPP
D) XMP

ANSWER= (C) XMPP

 

7. An IoT network requires communication mechanism, which is capable of synchronous as well as asynchronous communication. The mechanism should support both request-response, as well as publish-subscribe models. Which of the following protocol would be best suited for such a mechanism?

A) AMQP
B) CoAP
C) MQTT
D) None of these

ANSWER= (B) CoAP

 

8. Which of the following technique is used to transmit data frames in Beacon-enabled IEEE 802.15.4 networks?

A) unslotted CSMA/CA
B) slotted CSMA/CA
C) unslotted CSMA/CD
D) slotted CSMA/CD

ANSWER= (B) slotted CSMA/CA

 

9. What is the maximum size of hop limit in 6LoWPAN packet format?

A) 8-bit unsigned integer
B) 16-bit unsigned integer
C) 8-bit signed integer
D) 16-bit signed integer

ANSWER= (A) 8-bit unsigned integer

 

10. In the context of XMPP, which of the following correctly defines BOSH?

A) XML streaming
B) HTTP binding
C) Both XML streaming and HTTP binding
D) Binary encoding

ANSWER= (B) HTTP binding

 

11. Which of the following protocol is used to implement device management for mobile devices?

A) OMA-DM
B) Websocket
C) Alljoyn
D) DNS-SD

ANSWER= (A) OMA-DM

 

12. In LOADng, can intermediate routers respond to Route Requests (RREQs)?

A) Yes, in any case
B) Yes, only when RREQ flooding occurs
C) Yes, only if they have active routes to the sought destination
D) No

ANSWER= (D) No

 

13. Statement I – The messaging sub-layer of CoAP, is responsible for reliability and duplication of messages.
Statement II – The request/response sub-layer is responsible for communication.
Which of the above statement/statements is/are correct?

A) Only Statement I
B) Only Statement II
C) Both Statement I and II
D) Statement I Correct but Statement II Incorrect

ANSWER= (C) Both Statement I and II

 

14. Which of the following is a messaging mode in CoAP?

A) Append
B) Substitute
C) Attempt
D) Separate

ANSWER= (D) Separate

 

15. Which of the following provides for the discovery of services residing locally or across a network?

A) Internet
B) SMQTT
C) XMPP
D) CoAP

ANSWER= (C) XMPP