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In a multi-device MQTT network, what role does the Raspberry Pi usually play?

easy🧠 Conceptual Q2 of 15
Raspberry Pi - MQTT for IoT

In a multi-device MQTT network, what role does the Raspberry Pi usually play?

AMQTT broker to route messages
BMQTT client to send and receive messages
CNetwork firewall to block MQTT traffic
DDatabase server for storing MQTT messages
Step-by-Step Solution
Solution:
  1. Step 1: Identify Raspberry Pi's typical MQTT role

    Raspberry Pi devices commonly act as clients that publish or subscribe to topics.
  2. Step 2: Differentiate broker and client roles

    The broker routes messages; Raspberry Pi usually runs client software to communicate via MQTT.
  3. Final Answer:

    MQTT client to send and receive messages -> Option B
  4. Quick Check:

    Raspberry Pi role = MQTT client [OK]
Quick Trick: Raspberry Pi usually acts as MQTT client, not broker [OK]
Common Mistakes:
MISTAKES
  • Confusing broker and client roles
  • Thinking Raspberry Pi blocks MQTT traffic
  • Assuming Raspberry Pi stores messages by default

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