A network is a collection of independent computers that communicates with each other over a shared network medium usually a cale or wire, although wireless communication can also be used between networked computers and peripherals like bluetooth and wi-fi were also available.
Computer Network
A computer network is a collection of more than two or more connected computers. Through a computer network, computers were joined in a network. The users of a computer can share files with each other and others peripherals such as modem, printers, tape backup drives, or CD-ROM drives.
Types of Networks:
LAN (Local Area Networks)
LAN or Local Area Networks are networks usually confined to a geographic area, such as a single building or a college campus. LAN can be small, linking as few as three computers, but often link hundreds of computers used by thousands of people.
WAN (Wide Area Networks)
WAN or Wide area networking combines multiple LANs that are geographically separate. This is accomplished by connecting the different LANs using services such as dedicated leased phone lines, dial-up phone lines , satellite links, and data packet carrier services. Wide area networking can be as simple as a modem and remote access server for employees to dial into, or it can be as complex as hundreds of branch offices globally linked using special routing protocols and filters to minimize the expense of sending data sent over vast distances.
WLAN (Wireless Local Area Network)
WLAN or Wireless Local Area Network links two or more devices using some wireless distribution method , and usually providing a connection through an access point to the wider internet. This gives users the mobility to move around within a local coverage area and still be connected to the network. Wi-fi is the best example for this.
MAN (Metropolitan Area Network)
MAN or Metropolitan Area Network usually spans a city or a large campus. A MAN usually interconnects a number of local area networks (LANs) using a high-capacity backbone technology, such as fiber-optical links, and provides up-link services to wide area networks (or WAN) and the Internet.
CAN (Campus Area Network)
CAN or Campus Area Network interconnects a few local area networks (LAN) within a university campus or corporate campus.
PAN (Personal Area Network)
A personal area network (PAN) is the interconnection of information technology devices within the range of an individual person, typically within a range of 10 meters. For example, a person traveling with a laptop, a personal digital assistant (PDA), and a portable printer could interconnect them without having to plug anything in, using some form of wirelesstechnology. Typically, this kind of personal area network could also be interconnected without wires to the Internet or other networks.
A personal area network (PAN) is the interconnection of information technology devices within the range of an individual person, typically within a range of 10 meters. For example, a person traveling with a laptop, a personal digital assistant (PDA), and a portable printer could interconnect them without having to plug anything in, using some form of wirelesstechnology. Typically, this kind of personal area network could also be interconnected without wires to the Internet or other networks.