Data Communications and Computer Networks

Front

What is Data Communications?

Back

The transmission of different forms of data such as text, audio, video, images, and graphics between electronic devices.

Front

What are the basic components of communications?

Back

Sender, Receiver, Medium.

Front

What is the difference between wired and wireless communications media?

Back

Wired communications media transmit information over a closed, connected path, while wireless communications media transmit information through the air.

Front

What are the types of data transmission channels?

Back

Narrow bands (5-30 bps), Voice bands (1,000-9,600 bps), Broad bands (100,000 bps).

Front

What is a Computer Network?

Back

An interconnection of computers and computing equipment using either wires or radio waves over small or large geographic areas.

Front

What does network topology define?

Back

The way in which computers, printers, and other devices are connected.

Front

What is Bus Topology?

Back

A topology where all devices are connected by one single cable.

Front

What is Ring Topology?

Back

A network configuration where computers are arranged in a ring, transmitting messages in one direction.

Front

What is Star Topology?

Back

A topology where a central host computer receives all messages and forwards them to the appropriate computer.

Front

What is Mesh Topology?

Back

A topology that connects all devices to each other for redundancy and fault tolerance.