Two alternative internet protocols that improve IoT device operation while maintaining interoperation with the internet are MQTT and CoAP.

Question

Group of answer choices

MQTT communicates data using publish and subscribe method.

CoAP is used for M2M communication

MQTT and CoAP both need a broker to handle the information transmission.

MQTT stands for Message Queuing Telemetry Transport and CoAP Constrained Application Protocol.

CoAP is a method data communication that uses a request-response oriented scheme and eliminates the need for a broker

Answer 1

Let's evaluate each of the statements regarding MQTT and CoAP:

1. MQTT communicates data using publish and subscribe method.

   • True. MQTT (Message Queuing Telemetry Transport) is indeed based on a publish-subscribe model where clients (devices) can publish messages to a topic or subscribe to topics to receive messages.

2. CoAP is used for M2M communication.

   • True. CoAP (Constrained Application Protocol) is designed specifically for constrained devices and networks and is typically used for Machine-to-Machine (M2M) communication.

3. MQTT and CoAP both need a broker to handle the information transmission.

   • False for CoAP. MQTT requires a broker to manage message delivery between clients, while CoAP operates on a client-server model and does not need a broker; it communicates directly with other devices using request-response mechanisms.

4. MQTT stands for Message Queuing Telemetry Transport and CoAP Constrained Application Protocol.

   • True. MQTT stands for Message Queuing Telemetry Transport, and CoAP stands for Constrained Application Protocol.

5. CoAP is a method of data communication that uses a request-response oriented scheme and eliminates the need for a broker.

   • True. CoAP indeed uses a request-response model like HTTP and does not require a broker for communication between devices.

In summary:

• Statements 1, 2, 4, and 5 are true.
• Statement 3 is false.