What is a major difference of MQTT in terms of design compared to AMQP?
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A. B. C. D.B.
MQTT (Message Queuing Telemetry Transport) and AMQP (Advanced Message Queuing Protocol) are both messaging protocols used for IoT communication, but they have different designs and features.
The major difference between MQTT and AMQP in terms of design is how they handle messaging and routing. MQTT is a publish-subscribe messaging protocol, while AMQP is a message queuing protocol.
In MQTT, messages are published by a client and then delivered to subscribers who have subscribed to the relevant topic. MQTT uses a broker to manage the messages and the subscriptions. The broker acts as a mediator between the publishers and subscribers, and it stores and forwards the messages to the relevant subscribers. MQTT has a low overhead and requires minimal bandwidth since it uses a binary protocol that is lightweight and efficient. MQTT also provides routing based on topics, which means that subscribers can receive only the messages that are relevant to them.
On the other hand, AMQP is a message queuing protocol that uses a message broker to manage the messages. AMQP provides more advanced routing features for messages, including headers and routing keys, which allow messages to be routed based on specific criteria. AMQP has a higher overhead compared to MQTT since it uses a more complex protocol that supports features such as guaranteed delivery, transactional messaging, and message fragmentation.
Therefore, the correct answer to the question is D. MQTT provides routing based on headers, while AMQP provides more advanced routing features such as routing keys. MQTT has very low overhead, while AMQP has a higher overhead due to its more complex protocol.