What is computer network?
A computer network is a group of two or more computer systems linked together. The purpose of having computer network is to allow computers to communicate with each other and share resources and information.
The type of communication in computer network might be a download of video from Youtube, using your web browser like Firefox, Internet explorer to read CNN news; talking to your friends using Instant Messenger like MSN, Google Talk and so on.
A computer network can be as small as having only two PCs connected through a cable. Anyway, the biggest computer network today is the Internet! As such, based on the scale of computer networks, it can be classified as Local Area Network (LAN), Wide Area Network (WAN), Metropolitan Area Network (MAN), Personal Area Network (PAN),Virtual Private Network (VPN) and so on.
The type of communication in computer network might be a download of video from Youtube, using your web browser like Firefox, Internet explorer to read CNN news; talking to your friends using Instant Messenger like MSN, Google Talk and so on.
A computer network can be as small as having only two PCs connected through a cable. Anyway, the biggest computer network today is the Internet! As such, based on the scale of computer networks, it can be classified as Local Area Network (LAN), Wide Area Network (WAN), Metropolitan Area Network (MAN), Personal Area Network (PAN),Virtual Private Network (VPN) and so on.
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