Raspberry Pi - MQTT for IoT
Which of the following is the correct way to subscribe to a topic named 'home/temperature' using paho-mqtt client in Python?
Which of the following is the correct way to subscribe to a topic named 'home/temperature' using paho-mqtt client in Python?
easy📝 Syntax Q3 of 15
Step-by-Step Solution
Solution:
Step 1: Identify correct subscription method
The method to subscribe to a topic is client.subscribe(topic).Step 2: Eliminate incorrect methods
client.sub() and client.listen() do not exist; client.connect() is for broker connection.Final Answer:
client.subscribe('home/temperature') -> Option DQuick Check:
Subscribe method = B [OK]
Quick Trick: Use subscribe() to listen to topics [OK]
Common Mistakes:
MISTAKES- Using sub() instead of subscribe()
- Confusing connect() with subscribe()
- Trying listen() which is invalid
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