Keywords for IT

Keywords for IT

1. LAN

   • LAN is Local Area Network
     • This is used so that computers that are in the same building are all connected to one network.

2. WAN

   • WAN is Wide Area Network
     • This is used so that computers in a different country can connect to a website or something like that in another country.

3. Passwords

   • Passwords are needed to stop other people from logging into your account.
     • Passwords help stop people from hackig into your accounts .
     • Passwords are used on websites like facebook , twitter , instagram and many other social medias.It is also used for things like banks and ebay.

4. Server

   • A server is used to share files and can also manage the security and logins of network.
     • This will mean everyone logging inot the surver will have to be checked to see if they are a member of that surver and if hey arnt thye wont be able to log in.

5. Physical security

   • Physical security can stop unwanted people from accessing the hardware.For example using a lock.
     • If you didnt have physical security someone could go and steel your computer or hardwar.
     • Physical security is used in places like school and stores because then people cannot steel your hardwhere.

6. Firewall

   • Firewall is used to stop data being sent out or received by the computer.
     • This helps stop other people from steeling your files that you are sending to another computer.

7. Encryption

   • Used to scramble data being sent over a network so that it cant be read unless you have the key or code.
     • This will mean that anyoe who is trying to get hold of your file that you are sending wont b able to read any of it because it will be all scrambled up and they would have to have somesort of code to decode it.
     • Cipher
       • A cipher is a way of encription and decription you make a way of encripting your message to hid its real meaning. like you could use a number cypher or you could use Caesars cypher.
     • Things that require encryption is wireless networks and banks also it is is used for anything that requires a log in to get into the account or thing that you are using.
   • Decryptin is when you decrypt a piece of infomation.