IOT IoT Protocols and Standards 3

Question 1

What does the LwM2M (Lightweight M2M) protocol define for IoT device management?

Accepted Answer

A protocol for device management and service enablement on constrained IoT devices

Answer

LwM2M is an OMA (Open Mobile Alliance) standard protocol for device management of constrained IoT devices, including bootstrapping, firmware updates, and telemetry.

Question 2

Which protocol operates at the application layer and is specifically designed for home automation, using a mesh network topology?

Accepted Answer

Zigbee

Answer

Zigbee operates at the application layer on top of IEEE 802.15.4 and uses a mesh topology to extend range in home automation systems.

Question 3

What is the Thread protocol designed to improve upon compared to Zigbee in smart home IoT?

Accepted Answer

Native IPv6 support and direct internet connectivity without a proprietary hub

Answer

Thread adds native IPv6 support over IEEE 802.15.4, allowing devices to connect directly to IP networks without proprietary gateways, unlike Zigbee.

Question 4

Which standard governs the HART (Highway Addressable Remote Transducer) protocol used in industrial IoT?

Accepted Answer

HART Communication Foundation Standard

Answer

The HART Communication Foundation maintains the HART standard, which allows digital communication over legacy 4-20mA analog industrial instrument wiring.

Question 5

What is the Matter protocol (formerly Project CHIP) designed to solve in smart home IoT?

Accepted Answer

Providing a unified interoperability standard across major smart home ecosystems

Answer

Matter is an open, royalty-free connectivity standard that enables smart home devices to work across Apple HomeKit, Google Home, Amazon Alexa, and other platforms.

IOT - Internet of Things Practice Test

IOT - Internet of Things Practice Test

IOT IoT Protocols and Standards 3