Which of the following is not a messaging mode in CoAP?
A)confirmable
B)separate
C)direct
D)piggyback

Question

Quizplus · Accepted Answer

CoAP (Constrained Application Protocol) defines four types of messaging modes: Confirmable, Non-confirmable, Acknowledgement, and Reset. "Separate" and "Piggyback" are terms related to how responses are coupled with requests, but they are not messaging modes themselves. "Direct" is not a defined messaging mode in CoAP, making it the correct answer.

Which of the Following Is Not a Messaging Mode in CoAP