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Why is MQTT preferred over HTTP for multi-device communication in Raspberry Pi networks?

hard🧠 Conceptual Q10 of 15
Raspberry Pi - MQTT for IoT

Why is MQTT preferred over HTTP for multi-device communication in Raspberry Pi networks?

AMQTT requires no broker, unlike HTTP
BMQTT is easier to program than HTTP
CHTTP cannot send messages between devices
DMQTT uses less bandwidth and supports persistent connections
Step-by-Step Solution
Solution:

  1. Step 1: Compare MQTT and HTTP protocols

    MQTT is lightweight, uses less bandwidth, and maintains persistent connections.

  2. Step 2: Understand why MQTT suits IoT devices

    Persistent connections and low overhead make MQTT ideal for resource-limited devices like Raspberry Pi.

  3. Final Answer:

    MQTT uses less bandwidth and supports persistent connections -> Option D

  4. Quick Check:

    MQTT efficiency = less bandwidth + persistent connection [OK]
Quick Trick: MQTT is lightweight and keeps connections alive [OK]
Common Mistakes:
MISTAKES
  • Thinking HTTP can't send messages
  • Assuming MQTT has no broker
  • Believing MQTT is easier to program by default

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