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4 of 5 articles

MQTT Protocol

Publish-Subscribe model for IoT.

Darshan N
Updated: 19 March 2026
4 min read
#Embedded Systems

MQTT Protocol Quiz

Test your understanding of the MQTT publish-subscribe model for IoT messaging.

Question 1 of 3

Q1.In MQTT, a client publishes a message with QoS level 2. What is the message exchange sequence between the publisher and the broker?

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Two-wire interface, addressing, acknowledgement.

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SPI

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