Question

A device networked into a system communicates by combining specific internet protocols and a method for connectivity. Which of the following are not true? Select all that apply.

Group of answer choices

Networked devices are configured in a star pattern using wireless transmission medium only.

MQTT and CoAP are becoming the leading messaging protocols for the IoT scenarios.

Devices today only communicate with networks and the Internet using Transmission Control Protocol/Internet Protocol (TCP/IP).

Message Queuing Telemetry Transport (MQTT) and Constrained Application Protocol (CoAP) are two alternative Internet protocols that improve IoT device operation while maintaining interoperation with the Internet.

A “constrained” device is one with limited CPU, memory, and power resources. The devices are often sensors/actuators, smart objects, or smart devices.

Answer 1

Networked devices can be configured in various topologies. MQTT and CoAP are leading IoT messaging protocols. Devices use various protocols for communication. Constrained devices in IoT have limited resources.

Step-by-step explanation:

The statement “**Networked devices are configured in a star pattern using wireless transmission medium only**” is not true. Networked devices can be configured in various topologies including star, mesh, and bus patterns. Additionally, wired transmission mediums such as Ethernet cables are commonly used for networking.

**MQTT and CoAP** are indeed becoming leading messaging protocols for IoT scenarios. These lightweight communication protocols are specifically designed for constrained devices in IoT applications.

It is not true that devices today only communicate with networks and the Internet using **Transmission Control Protocol/Internet Protocol (TCP/IP)**. There are various other protocols such as User Datagram Protocol (UDP) that are commonly used for communication.

The statement **“A “constrained” device is one with limited CPU, memory, and power resources. The devices are often sensors/actuators, smart objects, or smart devices**” is true. Constrained devices in IoT typically have limited resources and are designed to perform specific functions.