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Networks!

Network Revision c:
by

Stephanie Silva

on 3 December 2012

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Transcript of Networks!

Local Area Network (LAN) By Stephanie Silva Networks! What is a network? :o Advantages of a network A network is a group of computers that
are able to communicate with each other. Communication devices

Network software

Data transfer media

Network standard Main elements in an ICT network: ...you will need a
Network interface card (NIC) Before a computer can be connected.. There are two main types of network: Files can easily be shared between users.

Network users can communicate by email and social networks.

Users cannot see other users' files.

Data is easy to backup as all the data is stored on the file server. Prepares data for sending over the network

Sends the data

and controls the data. A NIC: LAN: WAN:

A WAN covers a large area. Wide Area Network (WAN) A LAN covers a small area Expensive to set up and install.

If the server breaks down some files will be unable to get access to.

Viruses can spread to other computers throughout a computer network.

Dangers of hacking. Disadvantages of a network There are many different topographies for networks such as: The bus network

The star network

The ring network The bus network A network where components are joined together by one cable Disadvantage:

Performance will become slower with more devices

If the main cable gets damaged the whole network will fail
Advantage:

Doesn't need much cable.

Cheap
The ring network The star network A network where devices are connected to a central hub.
A network where each device is connected to two other devices beside it and form a ring.
Advantage:
if one cable fails then all the devices will still work.
Disadvantage:
if the hub fails all the devices connected to it will have no network connection
Advantage:
Quick data transfer
Disadvantage:

Expensive as there are a lot of cables to install

If a cable fails, the whole network will fail.
THE END C:
Full transcript