Page 10 - KEC Khaitan C8.2 Flipbook
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It allows computers in the network to share hardware like printers, scanners, fax machines,
storage devices, etc.
It allows sharing of application software over the network.
It allows rapid communication such as e-mail, messaging, etc.
It allows us to store information in one centralised location.
It is a cost-effective method.
COMPONENTS OF A COMMUNICATION SYSTEM
Before we discuss the components of a communication system, let us first understand the
process of communication between two persons. When two persons communicate with each
other, one speaks and the other listens. The person who is speaking is the sender and the person
who is listening is the receiver of the information. The voice originating from the sender reaches
the receiver through the air.
Therefore, air is the communication channel. "A communication channel is the medium that helps
carry information from one place to another."
The components of a communication system are:
Sender: A sender is a device (usually a computer) that wants to send information to another
computer connected to the network.
Receiver: A receiver is a device that is receiving data from another device on the network.
Transmission Medium: The transmission medium, usually a wired connection such as a cable
(e.g., Ethernet), is what enables you to transfer data from one computer to another. Wireless
communication between networked computers and peripherals is also possible using Wi-Fi,
Bluetooth, or other wireless technologies.
Message: A message is the information or data that needs to be transferred from one device
to another.
Protocol: A protocol is a set of standard rules used for communication.
REQUIREMENTS FOR COMPUTER NETWORKING
To establish a computer network, we need some peripherals. Let us take a look at some of the
peripherals required to establish a network.
NETWORK INTERFACE CARD (NIC)
The NIC connects a computer to a network and allows it to communicate
with other computers on the network.
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