Introduction To Internet Of Things | Week 2

Introduction To Internet Of Things Week 2

Course Link: https://onlinecourses.nptel.ac.in/noc23_cs51/course

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

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

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

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)

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

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

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

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

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

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

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)

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

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

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

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