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Which protocol interacts asynchronously over UDP?

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Which protocol interacts asynchronously over UDP?

(a) HMTP

(b) CoAP

(c) MQTT

(d) TCP/IP

This question was posed to me in an online quiz.

The origin of the question is IoT Architecture for Precision Agriculture in portion IoT Architecture of IOT

1 Answer

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Best answer
Right choice is (b) CoAP

The explanation: CoAP is an application layer protocol (IETF draft) for resource constrained devices. It is Asynchronous message interactions over UDP, Request/Response semantics CoAP resources are identified by Uniform Resource Identifiers.

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