Test your knowledge

1. MQTT runs on top of:
   1. The MQIP protocol.
   2. The TCP/IP protocol.
   3. The IoT protocol.

2. The data for an MQTT message is known as:
   1. Payload.
   2. Packet.
   3. Upload.

3. In MQTT version 3.1.1, the broker is named:
   1. MQTT agent.
   2. MQTT client.
   3. MQTT server.

4. QoS level 0 for MQTT means:
   1. Exactly once delivery
   2. At most once delivery
   3. At least once delivery

5. QoS level 1 for MQTT means:
   1. Exactly once delivery
   2. At most once delivery
   3. At least once delivery

6. QoS level 2 for MQTT means:
   1. Exactly once delivery
   2. At most once delivery
   3. At least once delivery