2007-01-16 23:48:24 · 5 answers · asked by fawad_joya 1 in Computers & Internet ➔ Computer Networking
That's a hard question to answer in short notes.. I'll try to keep it simple here..
LANs are local area networks.. It consists of a group of computers connected to each other in a relatively small place (House, aparment, Building, 2 buildings, etc..)..
You might already know that data in computers is described as 1s and 0s. Many things can be used to represent those 0s and 1s. For example we can use a lamp. If its On then u get a 1, If its off u get a 0. You and I can communicate useing lamps. by a seqence of lighting the bulbs on and off we can translate this into data. This is actually what happens in fiber optics networks. So this is how data is transferred there.
Another way is to use voltage on wires. A high voltage means a 1, low means a 0. A computer on a lan keeps mdifying the voltage on the wires to represent the data it wants to send. Other computers sense the voltage changes and translate the signals back into data.
This requires a protocol. A way in which all computer agree to use to communicate, like sending a header first containing data about the data the computer is going to send. Protocols might also be used to organize access to transmission to avoid collision (2 computers changing the 'wires voltage' at the same time) which will result in ambigous data. Protocols are also used for flow control and error control.
This was as brief as it could be : ) ..
2007-01-17 00:01:08 · answer #1 · answered by Beavis111 2 · 0⤊ 0⤋
A lan is a local area network. to transfer data you could make a shared folder on the computer that has the file in your lan and you should be able to connect to that computer if it is connected to your lan. which is a routerconnecting all of the computers.
2007-01-17 07:55:15 · answer #2 · answered by cooldude5611901 2 · 0⤊ 0⤋
data were actually transferred through packets..passing through the modem (modulator / demodulator) those data were converted to packets when where sending it.. going to the specific location / ip (every site/address is assigned with specific ip) then when they recieve it modem will convert it again to data so the end user will be able to understand it...
2007-01-17 07:56:26 · answer #3 · answered by angrytasz 2 · 0⤊ 0⤋
lan is the" LOCAL AREA NETWORK" ie bt, ntl ,talk talk .etc, your local supplier for broadband
2007-01-17 07:56:38 · answer #4 · answered by gerard 4 · 0⤊ 0⤋
Look here
2007-01-17 07:51:44 · answer #5 · answered by Anonymous · 0⤊ 0⤋