IOT IoT Protocols and Standards

Question 1

What does MQTT stand for in IoT communications?

Accepted Answer

Message Queuing Telemetry Transport

Answer

Multi-Queue Transport Technology

Answer

Mobile Query Transfer Terminal

Answer

Managed Queue Telemetry Tool

Question 2

Which IoT protocol uses a RESTful architecture and is designed for constrained devices, often compared to a lightweight HTTP?

Accepted Answer

CoAP

Answer

AMQP

Answer

MQTT

Answer

XMPP

Question 3

In the MQTT protocol, what role does the 'broker' play?

Accepted Answer

It receives messages from publishers and routes them to subscribers

Answer

It generates IoT data

Answer

It encrypts all device communications

Answer

It assigns device addresses

Question 4

What does the IEEE 802.15.4 standard define?

Accepted Answer

Low-rate wireless personal area networks used as the basis for Zigbee and Thread

Answer

High-speed Wi-Fi communications

Answer

Cellular LTE communications

Answer

Bluetooth Classic profiles

Question 5

Which MQTT Quality of Service (QoS) level guarantees that a message is delivered exactly once?

Accepted Answer

QoS 2

Answer

QoS 0

Answer

QoS 1

Answer

QoS 3

Question 6

What is the primary advantage of the AMQP protocol over MQTT in enterprise IoT deployments?

Accepted Answer

Richer message routing, queuing, and enterprise broker features

Answer

Lower power consumption

Answer

Longer range communications

Answer

Smaller packet size