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1.4 | Network
- What is a network?
- A collection of computers, servers, mainframes,
network devices, peripherals, or other devices
connected to one other to allow the sharing of data.
- A group of interconnected computers / devices.
- A collection of computers, servers, mainframes,
network devices, peripherals, or other devices
connected to one other to allow the sharing of data.
- What are the main types of network?
- Local Area Network (LAN)
- What is LAN?
- It covers a small area such as one site or building.
- eg. a school
- eg. a school
- It covers a small area such as one site or building.
- What is LAN?
- Wide Area Network (WAN)
- What is WAN?
- It covers a large
geographical area.
- eg. the internet
- eg. the internet
- Most are made from several LANs connected together.
- It covers a large
geographical area.
- What is WAN?
- Local Area Network (LAN)
- What are the advantages?
- Sharing devices
saves money.
- eg. printers
- eg. printers
- Files can be easily
shared between users.
- Data is easy to backup as all the
data is stored on the file server.
- Security is good.
- Users cannot see other users'
files unlike on stand-alone
machines.
- Users cannot see other users'
files unlike on stand-alone
machines.
- Sharing devices
saves money.
- What are the disadvantages?
- Purchasing the network cabling and file servers can be expensive.
- Viruses can spread to other
computers throughout a
computer network.
- Danger of hacking, particularly with WAN.
- To prevent this,
security procedures
are needed.
- eg. a firewall
- eg. a firewall
- To prevent this,
security procedures
are needed.
- Purchasing the network cabling and file servers can be expensive.
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