Ellie+Deakin

Homework is to revise for exams after half-term use the website and the revision list. __Networks__


 * A computer not connected to a network is called a stand-alone
 * A network is joining more than one computer together so that they share things like printers and hardware as well as software and data.
 * when the computers are close to each other connected by cables, or are wireless this is called LAN (Local Area Network) a computer inthis area is called a workstation.
 * The users in a LAN can share files and software as well as CD-ROMs and E-mails, this area is fast.
 * On LAN every user has a file server, an area to save their work on, and a password and username.
 * WAN stands for Wide Area Network and can link computers all over the world.
 * WANs are connected through LANs and can be transmitted through phone lines, modem, satellites, microwave links and fiber optics.
 * The largest WAN in existansce is the internet.
 * A Bus network is the simplist it is a single line that connects all the computers and printers with a terminator at the end to prevent signals bouncing back and forth.
 * In a Ring network all the computers and printers are connected in a circle te information being passed goes through all the computers until passed to the destination computer.
 * IN a Star network every workstation is connected to its own cable directly to the server. Schools and offices usually prefer the Star layout because it is normally the most reliable.
 * A Username is a keyword to connecet you to your saved files a password checks that it is you acssesing the files.
 * [[file:data collection form.doc]]