NPTEL An Introduction to Internet of Things Week 2 Quiz Solution


1. The full form of MQTT is

 a. Message Queue Telemetry Transport

 b. Message Query Telemetry Transport

 c. Message Queue Telemedicine Transport

 d. None of these

2. In MQTT, a ________________ controls the publish-subscribe messaging pattern.

 a. Publishers

 b. Message Broker

 c. Subscribers

 d. All of these

3. Which of the following is NOT a component of MQTT?

 a. Publishers

 b. Users

 c. Brokers

 d. None of these

4. ______________ is an extension of MQTT which uses lightweight attribute based encryption. It has ___________ main stages.

 a. SMQTT, three

 b. BMQTT, three

 c. SMQTT, four

 d. None of these

5. Which of the following is based on Request-Response model between end-points?

 a. MQTT

 b. CoAP

 c. Both (a) and (b)

 d. Neither (a) nor (b)

6. The two sub-layers of CoAP are -

 a. Messaging and Holding

 b. Messaging and Backoff

 c. Messaging and Teardown

 d. Messaging and Request/response

7. Which of the following is used for real-time exchange of structured data?

 a. MQTT


 c. XMPP

 d. CoAP

8. XMPP uses the ________________ architecture.

 a. Publish-subscribe

 b. Client-server

 c. Both (a) and (b)

 d. Neither (a) nor (b)

9. With respect to AMQP, which of the following message delivery guarantees allow for each message to be delivered certainly as well as to be delivered multiple times.

 a. At-least-once

 b. At-most-once

 c. Exactly-once

 d. Both (a) and (b)

10. Which of the following is/are NOT an AMQP frame type?

 a. Open

 b. Close

 c. End

 d. None of these

11. Which of the following is/are NOT the function/functions of the Bindings component of the AMQP protocol?

 a. Receives messages and routes them to queues

 b. Separate queues for separate business process

 c. Consumer receive messages from queues

 d. All of these

12. Which of the following is/are NOT exchange types in AMQP?

 a. Direct

 b. Indirect

 c. Fan-out

 d. Topic

13. State whether the following statement is True or False. Statement: The IEEE 802.15.4 is a well-known standard for low data-rate Wireless Personal Area Network (WPAN).

 a. True

 b. False

14. The networking topologies supported in the IEEE 802.15.4 are -

 a. Only Star

 b. Star and Mesh

 c. Only Mesh

 d. None of these

15. State whether the following statement is True or False. Statement: Periodic transmission of beacon messages does not occur in beacon enabled networks (IEEE 802.15.4).

 a. False

 b. True

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