Networking

Networking

1. WAN = Wide Area Network

   • Such as a bank websites accros the UK
   • Made up of multiple LANS

2. LAN = Local Area Network

   • Such as a school or collage

3. There are 3 diffferent types of networks 1.Bus Network 2.Star Network 3.Ring Network

4. Bus Networking

   • Disadvantages
     • If the main cable fails then the whole network will fail
     • As more workstations are added the slower the network will be
   • Advantages
     • Its the cheapest way opf installing a network
     • Its easy to install

5. Star Networking

   • Advantages
     • Very reliable. For example if one cable fails then the rest of the computers will carry on working
     • Its high preforming because there is no data collisions
   • Disadvantages
     • Its expenive to install and plus you usally need a network manager to manage it.
     • If the hub swithces or fails then all the devices connected will have no network connection

6. Ring Networks

   • Advantages
     • The network can transfer data fast even if there is lots of devices linked to the netowrk
     • No data collisions
   • Disadvantages
     • If the main cable fails all the devices connected to the main cable will have no network connection

7. A server is a powerful computer that acts as a central hub in the network

8. A client is a single computer in the network.

9. When a computer is not connected to the network it is called a standalone

10. File Server - A file server has data files and programmes stored on its backing storage. It has a large capacity hard disk Print Server - A print server has a printer that is shared. This means jobs can be printed from any computer in the network. Database server - A database server stores a large database which can be searched or maintained by any computer on the network. Mail Server - A mail server may manage the email traffic for all the users on a network.

11. 6 Advantages of a NetworkSoftware - In a network your software's can be shared to all of the other devices in the network. This means if one device downloads a software all the other devices connected to the network can use that software. Hardware - Hardware can be shared between each device. For example if a printer is connected to the networks then every one in the network can use the printer. This is useful as it saves money. Data A database can be stored on one of the networked computers but can be accessed by a user on another computer. It is even possible for several computers to access the database all at the same time. Communication Messages or files can be sent across from one device to another very quickly if connected to the same network. Backups If data files accessed by the user are stopped it is easy to make backups Network Managers A network manager can make permissions to users to restrict their actions. This is useful so the networks don't get out of hand with storage

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