Revision

Revision

1. WAN: Wide, Area, Network. This can be used in more than one building or house.

2. LAN: Local, Area, Network. This network connection and reach to around 100 metres. In school we use LAN because we are in a small geografical location

3. WPAN: Wireless, Personal, Area, Network. This network is quite small it reaches to about 10 metres like bluetooth. It is usually used in one room.

4. WLAN: Wireless, Local, Area, Network. This is about the same distance of a LAN but is wireless so you dont need to worry about the wire.

5. Encryption: To encrypt a message you need to create a code and the person on the receiving end needs to know the key. To encrypt a message you need to use a cypher.

6. Decryption: To decrypt a message you kneed to know the key to decode the lock.

7. Firewall: A firewall creates a barrier against virus' and stops them from invading your computer.

8. anti-virus software: An anti-virus software blocks virus' from getting to your websites and files.

9. Bluetooth: Commonly used for connecting two devices together wirelessly over a short range.

10. Wifi:Allows devices to connect to the Internet or communicate with one another wirelessly within a particular area.

11. GPRS(general, packet, radio, service: Uses mobile communications to connect to the internet or transfer data.

12. Ethernet: A system for connecting a number of computer systems to form a local area network.

13. To connect to any internet you need to use a network interface card.