IOT(Internet of Things) Multiple choice Questions and Answers
1.In AMQP, which of the following functionality defines its component “exchange”?
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?
ANSWER= (B) RPL
3. Which of the following AMQP frame type controls the message flow rate?
ANSWER= (B) Flow
4. Does 6LoWPAN allow interoperability between IEEE802.15.4-based wireless devices and other IP-based devices?
ANSWER= (A) Yes
5. Does MQTT support event-driven architecture?
ANSWER= (A) Yes
6. Which of the following is the acronym for “Extensible Messaging and Presence Protocol”?
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?
ANSWER= (B) CoAP
8. Which of the following technique is used to transmit data frames in Beacon-enabled IEEE 802.15.4 networks?
ANSWER= (B) slotted CSMA/CA
9. What is the maximum size of hop limit in 6LoWPAN packet format?
ANSWER= (A) 8-bit unsigned integer
10. In the context of XMPP, which of the following correctly defines BOSH?
ANSWER= (B) HTTP binding
11. Which of the following protocol is used to implement device management for mobile devices?
ANSWER= (A) OMA-DM
12. In LOADng, can intermediate routers respond to Route Requests (RREQs)?
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?
ANSWER= (C) Both Statement I and II
14. Which of the following is a messaging mode in CoAP?
ANSWER= (D) Separate
15. Which of the following provides for the discovery of services residing locally or across a network?