CISCO 300-915 Developing Solutions using Cisco IoT & Edge Platforms 11 25Oct2024 - Practice Quiz

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Question 1 of 30

In a smart home environment, multiple IoT devices communicate using the MQTT protocol. A temperature sensor publishes data to a topic called \"home/livingroom/temperature\" every 5 seconds. Meanwhile, a smart thermostat subscribes to this topic to adjust the heating based on the temperature readings. If the temperature sensor sends a message with a payload of 22°C, and the thermostat is set to maintain a temperature of 24°C, what action should the thermostat take based on the MQTT message received? Additionally, consider the implications of Quality of Service (QoS) levels in this scenario.

The thermostat should increase the heating to reach the desired temperature of 24°C.

The thermostat should turn off the heating since the current temperature is above the desired level.

The thermostat should ignore the message due to a low QoS level.

The thermostat should send a message back to the temperature sensor to request more frequent updates.

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