What is a computer network though? Networking is a set of computers, printers and other devices that connect with each other to share information and move data through the cable. Many users can print with the same printer, or use the same software at the same time. A computer that stores key information and plays the role of the data is called the Server computers that are connected to the network and receive data from the server are called workstations.
Many of the networks
1. Local Area Network (LAN)
A network is limited by the small area is commonly used by small office building or school. Usually it is not far from 1 km square. Most LAN uses cables and LAN card to connect one computer to another. Each computer connected to the LAN has a different Internet Protocol address. It is usually abbreviated as IP address. LAN can also be set up through Wireless Technology which has speed of 10 to 10,000 Mbps. Wireless LAN can use infrared or radio waves.
a. Share files and printers is easy to do among computers.
b. The risk of losing data due to virus can be reduced.
c. If there is one computer connected to the modem, all computers can access the Internet.
d. There is a lot of space in the storage system (hard disk) to store documents.
e. Files stored on the server can be accessed by the client computer with permission. The authorization may be made in accordance with the business development of the company.
2. Metropolitan Area Network (MAN)
This type of network usually has a larger area than a LAN, or it can contain any LAN networks that are connected to each other. The example of MAN is a network that is based in a wide complex campus.
3. Wide Area Network (WAN)
WAN is a kind of network that is usually built via satellite or submarine cable technology. An example of a WAN is a Bank network in the capital that can share information with regional banking network. They can also hold meetings with video conferencing over the Internet
Features WAN :.
a. We can send files or documents by electronic mail (email) instead of sending documents manually through post office.
b. A network Server in Headquarter can be a database from a branch.
c. Company data can be updated daily as necessary.