Introduction To Internet Of Things Week 2 Nptel Answers

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Introduction To Internet Of Things Week 2 Nptel Answers

Introduction To Internet Of Things Week 2 Nptel Answers (July-Dec 2024)


Q1.Based on functionality, MQTT is a
protocol.
a. Transport
b. Data
с. Semantic
d. None of these

Answer: b. Data


Q2.MQTT is a protocol. -based lightweight protocol for use in conjunction with TCP/IP
a. Client-Server
b. Publish-Subscribe
c. Both (a) and (b)
d. Neither (a) nor (b)

Answer: b. Publish-Subscribe


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Q3.A controls the publish-subscribe messaging pattern in MQTT.
a. Publishers
b. Subscribers
c. Broker
d. None of these

Answer: c. Broker


Q4.State True or False.
Statement: “In MQTT, the Publishers are Lightweight Sensors.”

a. True
b. False

Answer: a. True


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Q5.Which of the following is MQTT designed for?
a. Remote connections
b. Limited bandwidth
с. Small code footprint
d. All of these

Answer: d. All of these


Q6.A …………………………to which a client is subscribed is updated in the form of messages and distributed by the
a. Topic, Message Broker
b. Message Broker, Topic
c. Message Broker, Message Broker
d. Topic, Topic

Answer: a. Topic, Message Broker


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Q7.There are number of methods in MQTT protocol.
a. 5
b. 4
с. 6
d. None of these

Answer: a. 5


Q8.State True or False.
Statement: “Publish/Subscribe in MQTT is event-driven and enables messages to be pushed to clients.”

a. True
b. False

Answer: a. True


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Q9.SMQTT stands for?
a. Secure MQTT
b. Safe MQTT
c. Safety in MQTT
d. Stored MQTT

Answer: a. Secure MQTT


Q10..Similar to HTTP, COAP utilizes which of the following for operation?
a. GET
b. PUT
c. PUSH
d. All of these

Answer: d. All of these


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Nptel IoT Week 2 Assignment Answers


Q11.State True or False.
Statement: “The CoAP protocol is a Client-Server interaction-based protocol that is asynchronous over a datagram-oriented transport protocol such as UDP.”

a. True
b. False

Answer: a. True


Q12.What is the full form of M2M in the context of IoT protocol?
a. Message to Message
b. Man to Message
c. Message to Man
d. None of these

Answer: d. None of these


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Q13 .What is the basic unit of data in the AMQP protocol?
a. Chunk
b. Byte
с. Slit
d. None of these

Answer: d. None of these


Q14.State True or False.
Statement: “The OSI model has 9 layers.”

a. True
b. False

Answer: b. False


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These are Introduction To Internet Of Things Week 2 Nptel Answers


Q15.The “Destination Address” in the IPv4 packet represents which of the following?
a. The destination node address of the packet
b. The intermediate hop in the network
c. Both (a) and (b)
d. Neither (a) nor (b)

Answer: a. The destination node address of the packet


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Q1. The full form of MQTT is
a. Message Query Telemetry Transport
b. Message Queue Telemetry Transport
c. Message Queue Telemedicine Transport
d. None of these

Answer: b. Message Queue Telemetry Transport


Q2. In MQTT, a ________ controls the publish-subscribe messaging pattern.
a. Message Broker
b. Publishers
с. Subscribers
d. All of these

See also  Introduction To Internet Of Things Week 11

Answer: a. Message Broker


Q3. Which of the following is NOT a Data Protocol in IoT?
a. MQTT
b. CoAP
c. Websocket
d. None of these

Answer: d. None of these


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Q4. In MQTT for loT, the Publishers are _________.
a. Lightweight sensors
b. Actuators
c. Processing units
d. None of these

Answer: a. Lightweight sensors


Q5. Which of the following is NOT a method in MQTT?
a. Break
b. Connect
с. Disconnect
d. None of these

Answer: a. Break


Q6. Which of the following protocols in IoT have been designed for Machine to Machine (M2M) applications such as smart energy and building automation?
a. MQTT
b. CoAP
c. Websocket
d. All of these

Answer: b. CoAP


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Q7. Similar to HTTP, CoAP utilizes which of the following for operation?
a. GET
b. PUT
c. PUSH
d. All of these

Answer: d. All of these


Q8. What is the full form of XMPP in IoT?
a. Extensible Markup Page Processing
b. Extensible Messaging and Presence Protocol
c. Both (a) and (b)
d. Neither (a) nor (b)

Answer: b. Extensible Messaging and Presence Protocol


Q9. State whether the following statement if True or False.
Statement: XMPP is an open standard protocol.

a. True
b. False

Answer: a. True


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Q10. What is the full form AMQP in context of IoT protocol?
a. Another Message Queuing Protocol
b. Anchored Message Queuing Protocol
c. Advanced Message Queuing Protocol
d. None of these

Answer: c. Advanced Message Queuing Protocol


Q11. What is the basic unit of data in the AMQP protocol?
a. Chunk
b. Byte
c. Frame
d. None of these

Answer: c. Frame


Q12. Which of the following is/are exchange types in AMQP?
a. Direct
b. Fan-out
с. Торіс
d. All of these

Answer: d. All of these


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Q13. IoT networks can be classified in which of the following type/types?
a. Non-Beacon Enabled
b. Beacon Enabled
c. None of these
d. Both (a) and (b)

Answer: d. Both (a) and (b)


Q14. The OSI model has _______ layers.
a. 6
b.7
c. 4
d. 8

Answer: b.7


Q15. The “Destination Address” in the IPv4 packet represents which of the following?
a. The destination node address of the packet
b. The intermediate hop in the network
c. Both (a) and (b)
d. None of these

Answer: a. The destination node address of the packet


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Introduction To Internet Of Things Week 2 Nptel Answers (July-Dec 2023)

Course Name: Introduction To Internet Of Things

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These are Introduction To Internet Of Things Week 2 Assignment 2 Answers


Q1. 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

Answer: a. Message Queue Telemetry Transport


Q2. In MQTT, a ____ controls the publish-subscribe messaging pattern.
a. Publishers
b. Message Broker
c. Subscribers
d. All of these

Answer: b. Message Broker


Q3. Which of the following is NOT a component of MQTT?
a. Publishers
b. Users
c. Brokers
d. None of these

Answer: b. Users


These are Introduction To Internet Of Things Week 2 Assignment 2 Answers


Q4. __ 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

Answer: c. SMQTT, four


Q5. 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)

Answer: b. CoAP


Q6. The two sub-layers of CoAP are –
a. Messaging and Holding
b. Messaging and Backoff
c. Messaging and Teardown
d. Messaging and Request/response

Answer: d. Messaging and Request/response


These are Introduction To Internet Of Things Week 2 Assignment 2 Answers


Q7. Which of the following is used for real-time exchange of structured data?
a. MQTT
b. SMQTT
c. XMPP
d. CoAP

See also  Introduction To Internet Of Things Week 4

Answer: c. XMPP


Q8. XMPP uses the ____ architecture.
a. Publish-subscribe
b. Client-server
c. Both (a) and (b)
d. Neither (a) nor (b)

Answer: b. Client-server


Q9. 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)

Answer: a. At-least-once


These are Introduction To Internet Of Things Week 2 Assignment 2 Answers


Q10. Which of the following is/are NOT an AMQP frame type?
a. Open
b. Close
c. End
d. None of these

Answer: d. None of these


Q11. 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

Answer: d. All of these


Q12. Which of the following is/are NOT exchange types in AMQP?
a. Direct
b. Indirect
c. Fan-out
d. Topic

Answer: b. Indirect


These are Introduction To Internet Of Things Week 2 Assignment 2 Answers


Q13. 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

Answer: a. True


Q14. 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

Answer: b. Star and Mesh


Q15. 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

Answer: a. False


These are Introduction To Internet Of Things Week 2 Assignment 2 Answers

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These are Introduction To Internet Of Things Week 2 Assignment 2 Answers


Q1. Which of the following is based on the publish-subscribe model?
a. MQTT
b. HTTP
c. HTTPS
d. All of these

Answer: a. MQTT


Q2. In MQTT, a topic to which a client is subscribed is updated in the form of messages and distributed by the ________.
a. Publishers
b. Message Broker
c. Subscribers
d. All of these

Answer: b. Message Broker


Q3. Which of the following is used when more than one level needs to be subscribed, such as the entire sub-tree, i.e., a multilevel wildcard?
a. +
b. #
c. \
d. None of these

Answer: b. #


These are Introduction To Internet Of Things Week 2 Assignment 2 Answers


Q4. The CoAP protocol is designed for –
a. Heavy Web Application
b. Publish-Subscribe Applications
c. Machine-to-Machine (M2M) applications
d. Both (a) and (b)

Answer: c. Machine-to-Machine (M2M) applications


Q5. 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


Q6. Which of the following is a messaging mode in CoAP?
a. Append
b. Substitute
c. Attempt
d. Separate

Answer: d. Separate


These are Introduction To Internet Of Things Week 2 Assignment 2 Answers


Q7. 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


Q8. AMQP is a protocol of which layer?
a. Transport Layer
b. Application Layer
c. Network Layer
d. Session Layer

Answer: b. Application Layer


Q9. Which of the following is NOT a feature of the AMQP protocol?
a. Closed Standard
b. Security
c. Reliability
d. Routing

Answer: a. Closed Standard


These are Nptel IoT Week 2 Assignment Answers


Q10. There are a total of _______ number of AMQP frame types are defined that are used to initiate, control, and tear down the transfer of messages between two peers.
a. Seven
b. Eight
c. Nine
d. None of these

Answer: c. Nine


Q11. The function/functions of the Queue component of the AMQP protocol is/are –
a. Receive messages and route them to queues
b. Separate queues for separate business process
c. Consumer receive messages from queues
d. Both (b) and (c)

Answer: d. Both (b) and (c)


Q12. Which of the following statements is/are false?
Statement – I : IEEE 802.15.4 is a well-known standard for low data-rate Wireless Personal Area Network (WPAN).
Statement – II : IEEE 802.15.4 standard operates in the ISM band.

a. Statement – II
b. Statement – I
c. Both Statement I and II
d. None of these

See also  Introduction To Internet Of Things Week 3

Answer: d. None of these


These are Nptel IoT Week 2 Assignment Answers


Q13. The IEEE 802.15.4 establishes functionalities in which layers?
a. Application and Session Layers
b. Transport and Data Link Layers
c. Network and Session Layers
d. Physical and Data Link Layers

Answer: d. Physical and Data Link Layers


Q14. Which is not a purpose of the ZigBee Device Object (ZDO)?
a. Device Management
b. Interfacing and Control Services
c. Security
d. Policies

Answer: b. Interfacing and Control Services


Q15. State whether the following statement is True or False.
Statement : Similar to traditional barcodes and QR codes, RFID tag data cannot be read outside the line-of-sight.

a. False
b. True

Answer: a. False


These are Nptel IoT Week 2 Assignment Answers

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Introduction To Internet Of Things Week 2 Nptel Answers (Jul-Dec 2022)

Q1. 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

Q2. 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

Q3. Which of the following functions as the network bridge in IEEE 802.15.4 network?

Answer:- b

These are Nptel IoT Week 2 Assignment Answers


Q4. Which of the following allow communication between Zigbee and no-Zigbee devices?

a. layer-5 application-level bridge
b. layer-7 application-level gateway
c. layer-7 application-level bridge
d. layer-5 application-level gateway

Answer:- c

These are Nptel IoT Week 2 Assignment Answers

Q5. Statement I: RFIDs are radio-frequency-based.

Statement II: RFID devices can act as both readers as well as tags.

Which one of the following is correct?

a. Statement I is true but Statement II is false
b. Statement I is false but Statement II is true
c. Both the statements are true
d. Both the statements are false

Answer:- c

Q6. 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

These are Nptel IoT Week 2 Assignment Answers


Q7. 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:- a

Q8. Which of the following AMQP frame type controls the message flow rate?

a. Transfer
b. Flow
c. Control
d. Disposition

Answer:- b

Q9. Does 6LoWPAN allow interoperability between IEEE802.15.4-based wireless devices and other IP-based devices?

a. Yes
b. No

Answer:- a

These are Nptel IoT Week 2 Assignment Answers


Q10. 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

Q11. Does MQTT support event-driven architecture?

a. Yes
b. No

Answer:- a

Q12. Which of the following is the acronym for “Extensible Messaging and Presence Protocol”?

a. EMPP
b. XMLP
c. XMPP
d. XMP

Answer:- c

These are Nptel IoT Week 2 Assignment Answers


Q13. 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:- c

Q14. 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

These are Nptel IoT Week 2 Assignment Answers


Q15. 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

These are Nptel IoT Week 2 Assignment Answers