In MQTT, topics are used to:
Correct Answer: D. Organize and route messages
Practice Library
All MCQs
Browse exam-wise, subject-wise, and country-wise MCQs with explanations.
Which is better for event-driven many-to-many IoT messaging?
Correct Answer: C. MQTT publish/subscribe
Which protocol is often used for request/response web services?
Correct Answer: B. HTTP
Why is MQTT suitable for IoT telemetry?
Correct Answer: A. It supports lightweight messaging and publish/subscribe communication
Why is CoAP suitable for IoT?
Correct Answer: D. It is lightweight and works well with constrained devices
Which transport protocol is commonly associated with HTTP?
Correct Answer: C. TCP
Which transport protocol is commonly used by CoAP?
Correct Answer: B. UDP
Which method is typically used in REST to create or send data?
Correct Answer: A. POST
Which method is typically used in REST to retrieve data?
Correct Answer: D. GET
REST services commonly use:
Correct Answer: C. Resources identified by URLs and standard methods
HTTP is commonly used in IoT for:
Correct Answer: B. Web-based communication and REST services
MQTT-SN is especially useful for:
Correct Answer: A. Sensor networks and non-TCP/IP constrained environments