Components of a computer network

1. Basic Components of a
Computer Network
By
Edison Francis BSc
IT Teacher
St David’s Catholic Secondary School, Grenada

2. Network Components

3. Functions of Network Components
 Network Interface Connection [NIC]
 A network card that formats, send and receive the data at the
receiving node or device.

4. Functions of Network Components…
 Hub
 A device that connects all the computer in a network to each
other.

5. Functions of Network Components…
 Switch
 It is like a hub, however, instead of broadcasting incoming data
request, it uses the physical device address in the incoming
request to transfer the request to correct server computer.

6. Functions of Network Components…
 Server: A computer that runs operating system and hold data that is
shared over a computer network.
 A file server is a high-performance computer containing large capacity
hard disk drives that are available to all network users
 It is not used as a normal computer terminal but manages and shares files.
 Printer server is a computer dedicated to managing all printers on the
network.

7. Functions of Network Components…
 Client: a computer that is connected to a network.
 It can send data and receive data sent by other computers on
the network.

8. Functions of Network Components…
 Modem: Modulator/demodulator.
 It is a device normally provided by the Internet Service Provider (ISP) to
grant access to the Internet.
 It converts analogue and digital signals between your landline and the
Internet.

9. Functions of Network Components…
Router:
A device that directs data from the modem and sends it to
the different devices including computers, laptops, games
consoles, digital televisions and mobile devices that are
connected to it.
These devices may be connected directly to the router
wirelessly or through cables.

10. Functions of Network Components…
 Cables:
 wires used to connect more than one computers or other
devices such as printers and scanner to each other.
Twisted pair Coaxial Fibre optic

11. END