The Building Blocks: Basic Components of Networks

The Building Blocks: Basic Components of Networks

There are as many definitions for the term “network” as there are networks. However, most people would agree that networks are collections of two or more connected computers. When their computers are joined in a network, people can share files and peripherals such as modems,

printers, tape backup drives, and CD-ROM drives. When networks at multiple locations are connected using services available from phone companies, people can send e-mail,

share links to the global Internet, or conduct video conferences in real time with other remote users on the network.

Every network includes:
• At least two computers
• A network interface on each computer (the device that
lets the computer talk to the network—usually called
a network interface card [NIC] or adapter)
• A connection medium—usually a wire or cable, but
wireless communication between networked computers
and peripherals is also possible
• Network operating system software—such as Microsoft
Windows 95 or Windows NT, Novell NetWare, AppleShare,
or Artisoft LANtastic
Most networks—even those with just two computers—also
have a hub or a switch to act as a connection point between
the computers.