CIoTP Practice Questions - CertNexus Certified Internet Of Things Practitioner (CIoTP) Exam

What is an MQTT 'Last Will and Testament' (LWT) message used for?

A message published when a client gracefully disconnects A message the broker publishes on behalf of a client when the client disconnects unexpectedly An audit log of all messages sent by a client The final message a publisher sends before changing topics

Correct Answer:

A message the broker publishes on behalf of a client when the client disconnects unexpectedly

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