Computer networks

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Computer Networks
What is a Computer Network? Definition

A computer network is a group of interconnected computers or devices.

What you can use a Network for?

To share information.To share resources.

How to set up a small network involving access to the Internet
← Wi-Fi. Using Wi-Fi you can connect many computers and have access to Internet in all of them.← Cable/ DSL Modem. Connect computers with one modem.
← Wires: Connect computers by wires.

Types of Computer Networks:

LAN: Local Area Networks

A local area network (LAN) is a computernetwork covering a small physical area, like a home, office, or small group of buildings, such as a school, or an airport. These computers are connected by wires.

LAN Topologies

How you connectcomputers in a LAN: Ring, Bus, Star.

WAN: Wide Area Networks

Wide Area Network (WAN) is a computer network that covers a broad area (i.e., any network whose communications links cross metropolitan,regional, or national boundaries). WANs are used to connect LANs and other types of networks together, so that users and computers in one location can communicate with users and computers in otherlocations. They are connected by modems. The largest and most well-known example of a WAN is the Internet.

WLAN: Wireless Local Area Networks

A wireless LAN (WLAN) is a wireless local area networkthat links two or more computers or devices. This gives users the mobility to move around within a broad coverage area and still be connected to the network.
Protocol
In computing, a protocol is aset of rules which is used by computers to communicate with each other across a network. The TCP/ IP are a type of protocol that is used for Internet and Intranet. (TCP = Transmission ControlProtocol. IP = Internet Protocol.)

Internet
The Internet is a global system of interconnected computer networks that use the standardized Internet Protocol Suite (TCP/IP). It is a network of networks...
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