MCQ IN COMPUTER SCIENCE & ENGINEERING

Detailed explanation-1: -A communications device enables computer users to communicate and exchange items such as data, instructions, and information with another computer. A modem is a communications device that enables computers to communicate usually via telephone lines or cable.

Detailed explanation-2: -A router is a hardware device that allows you to connect several computers and other devices to a single Internet connection, which is known as a home network. Many routers are wireless, which allows you to create a home wireless network, commonly known as a Wi-Fi network.

Detailed explanation-3: -Examples of such devices include personal computers, mobile phones, laptops, etc. As we can see in Figure 11.1, four different types of devices-computer, printer, server and switch are connected to form the network.

Detailed explanation-4: -An output device is any hardware device used to send data from a computer to another device or user. Usually, most output peripherals are meant for human use, so they receive the processed data from the computer and transform it in the form of audio, video, or physical reproductions.

Detailed explanation-5: -In regards to networking (network devices modem), a modem is a piece of hardware that enables a computer to transmit and receive data over telephone lines.