MQTT QoS Levels

Learning objectives

• Select MQTT QoS levels from message-loss consequences
• Compare QoS 0, 1, and 2 reliability tradeoffs
• Account for duplicates, sessions, battery, and broker state
• Map message families to defensible QoS policies

Knowledge checks · 3

1. A battery-powered sensor publishes a replaceable temperature reading every few seconds.… ikc-18p3ra9
2. A device currently publishes the command 'toggle_relay' with QoS 1. Sometimes a retry… ikc-hsnqof
3. A controller publishes a QoS 2 command to an MQTT broker. The broker completes the QoS 2… ikc-w7vl6j

Placed labs · 0

No lab is placed with this chapter.