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Components of a LAN
What does LAN stands for?
LAN stands for Local Area Network.

What does LAN mean?
LAN is a computer network that connects computers together in an area given. It can be in a home, cafeteria, school, office buildings and many more. 

What are the components of a LAN?
1. Network Adapter.
According to smallbusiness.chron.com, a computer require a network adapter to connect the computer into the network so that the computer data can be converted into electronic signals to enable computer in the same area network the ability to share their      music, pictures or videos among the computers. For example, a school may have a computer lab that contains a number of computers that is connected together by wires that are plugged into them. Teenagers usually use the LAN system to play their games online together.  The network access element can be called in different names but the most recognized one is called the Media Access Control, or MAC in short. A MAC address is a physical address of every computer on a network and it is also the network adapter's serial number. Nowadays, a network adapter can be found in a motherboard of every computer that are bought.

2. Network Medium.
In order to connect the computer to a network, a medium will be needed and the medium usually comes in the form of a cable. The most common type of cable is called the "Unshielded Twister Pair" and can also be referred as an "Ethernet Cable" or just a "Network Cable." However, WiFi is the most common form of a Local Area Network and WiFi do not need the use of cables. WiFi is used to connect computers on a network without using any cables at all.

3. Cable Connector.
In wired networks, the most common form of connector is called the RJ45 port which every computer comes along with it. It is also called a "network port" or an "Ethernet port" sometimes. The RJ45 plug looks like a slightly larger telephone plug and connects the Unshielded Twisted Pair or the Shielded Twisted Pair cable.

4.Power Supply.
A power supply is needed to supply power to both the network adapter and the computer itself. A cabled network sends data interpreted as an electronic pulse and a wireless network uses the current to generate radio waves.

In wired networks, a computer cannot connect to many others without some form a hub. A hub repeats any signals coming into one of its ports out onto all its other ports and uses the cable to lead them from each port to one computer. Whereas a switch only sends the signal on to the computer with the address written in the arriving message. Routers are much more complicated and are able to forward messages all over the world. Larger networks sometimes use routers for their LAN traffic. The wireless networking device is called a "wireless router."

6.Network Software.
Software on a communicating computer packages data into segments and puts that data into a structure called a "packet." The source and destination addresses of the packet are written into the header of the packet. The receiving computer needs to interpret 
these packets back into meaningful data and deliver it to the appropriate application.