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MQTT Protocol Overview

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Questions and Answers

Which communication protocol is MQTT based on?

SMTP

TCP/IP (correct)

HTTP

UDP

What is the role of the broker in MQTT model?

Ensure security by cross-checking authorizations (correct)

Collect data from publishers

Define the quality of the message

Send information to subscribers

Which Quality of Service mode in MQTT is the most reliable but also the most bandwidth-consuming?

QoS3 (Multiple times)

QoS1 (At least once)

QoS0 (At most once)

QoS2 (Exactly once) (correct)

In MQTT, what does QoS1 (At least once) mode ensure?

At least one message delivery Signup and view all the answers

What type of protocol is MQTT?

Publication/subscription type (pub/sub) messaging protocol Signup and view all the answers

What is the special design focus of MQTT regarding devices?

Low power consumption Signup and view all the answers

What is one of the reasons why MQTT can be problematic for very restrictive devices?

Transmission of messages over TCP Signup and view all the answers

Which protocol variant of MQTT uses UDP and supports topic name indexing to address the issues faced by restrictive devices?

MQTT-SN Signup and view all the answers

What aspect of data representation and device management is a limitation of MQTT according to the text?

Platform-specific data management Signup and view all the answers

In a publish and subscribe system in MQTT, what does a device do when it subscribes to a particular topic?

Receive messages published on that topic Signup and view all the answers

How are topics represented in MQTT?

With strings separated by forward slashes Signup and view all the answers

What is one advantage of using MQTT in Internet of Things applications?

Low-bandwidth requirements Signup and view all the answers

MQTT Protocol Overview

Choose a study mode

Podcast

Questions and Answers

Which communication protocol is MQTT based on?

What is the role of the broker in MQTT model?

Which Quality of Service mode in MQTT is the most reliable but also the most bandwidth-consuming?

In MQTT, what does QoS1 (At least once) mode ensure?

What type of protocol is MQTT?

What is the special design focus of MQTT regarding devices?

What is one of the reasons why MQTT can be problematic for very restrictive devices?

Which protocol variant of MQTT uses UDP and supports topic name indexing to address the issues faced by restrictive devices?

What aspect of data representation and device management is a limitation of MQTT according to the text?

In a publish and subscribe system in MQTT, what does a device do when it subscribes to a particular topic?

How are topics represented in MQTT?

What is one advantage of using MQTT in Internet of Things applications?

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