Jack+Darby

homework: 8th of may spend 50 mins on coursework.



15th of may homwork: due next friday hand in any extra bits of course work plus finish notes on wikipage with the first 4 options of the network theory.

Different Networks:

LAN (local area network) when a number of computer all in a short range of one another e.g in the same office or two buildings close together. the computer can be all joined together with wires or wireless.

WAN (wide area network) this is when computers are conected over a big area. This is usually done when a company has different offices in certain locations. the computers are normally connected by servers.

BUS this is a method of conecting computers together. One cable could join loads of different types of computer systems like a printer, scanner, server and the computer itself.

Advantages

 * Easy to install
 * add extra workstations
 * Uses less cable than a Star network
 * great choice for temporary networks

Disadvantages

 * If there is a problem with the central cable, the entire network stops working
 * If there are a lot of workstations on the network, data can travel slowly.
 * Data collisions can happen as the network becomes busy
 * Not a high security - every workstation can see all of the data in the network
 * Limited cable length and a maximum number of workstations

RING this is another method of connecting computers together this means if information needs to be transported to another computer and will pass all of the systems in the connections without dessturbing them in any way.

STAR this is when the hub is connected to the router and all the computers are revolved round and connected to the hub so if the computer sended a signal to the printer it would have to pass through the hub before hand.