Types of networks

personal area network.

A personal area network (PAN) for communication between a computer, computer equipment used about a person's network. Some examples of equipment used in a casserole personal computers, printers, fax machines, phones, PDAs, scanners are, and even game consoles. PAN and can include a wired wireless connections between devices. A margin of at least 20-30 ft pan (about 6-9 meters) is about as common, but technical improvements are expected to increase with.

Local area network.

A local area network (LAN) such as school or an airport, a small physical area covered a computer a home, office, or small group of buildings is like a network. Existing cable network is more likely to be based on Ethernet technology, however, new standards such as ITU-T in a manner related to each other LAN to use the existing home wires provide G.hn (celebrate, phone lines and power lines 2 ) .

For example, a library for users of a cable connection or wireless LAN is to interconnect local devices (like printers and servers) and can connect to the Internet. In a wired LAN, library computer Generally, 5 Division (CAT5) cable through a system of inter-connected devices IEEE 802.3 protocols are running and eventually connect to the Internet. Server cables cat 5e enhanced cable, as are common on the IEEE 802.3 at 1 Gbit support / S will have a wireless LAN a different IEEE protocol, 802.11b, 802.11g, or 802.11n can probably use only. Personal computer (number of bright green) color printers, cash register can do to make educational network and the Internet. All user computers can use internet and card list. A workgroup can get to your local printer. Note that the printers are not accessible from outside your work group .

All inter-device Network layer (3 layer) should understand, the multiple subnets (different colors) are after handling. Within the library, they only 10/100 Mbit / user device and an Ethernet connection for Gigabit Ethernet connections to the central router S, "Layer 3 switches can be said 'cause they only Ethernet interfaces and must understand intellectual property. This optimization As one top distribution router router routers called the Internet and academic networks' routers connects customers to use is right.

Defining characteristics of LANS, (Wide Area Network), unlike its major data transfer rate van, are small geographical distribution, and the need for leased telecommunication lines lack. Current Ethernet or other IEEE 802.3 LAN technologies Gbit 10's speed / S data transfer rate it is powered. S. 40 and 100 of IEEE standardization projects have examined Gbit .