LAN
A network card is a small circuit board inside the computer, which allows the computer to communicate with others that are on the network. A modem is a communication device that uses the already-existing telephone network to facilitate computer communication.
Time sharing system allows many users to share the computer simultaneously. It is used when several users are linked through communication networks to a single computer.
A SERVER facilitates communication and resource sharing between other computers on the network.That process is called 'hand-shaking'
Network and Sharing Center
File and Printer Sharing allows other computers on a network to access resources on one's own computer. In a closed network this can help productivity, however it is not recommended to make use of this feature in an unsecured network to prevent data abuse.
Network and Sharing Center
Network allows for the sharing of devices and can reduce costs for a company.
A computer network, often simply referred to as a network, is a collection of computers and devices interconnected by communications channels that facilitate communications among users and allows users to share resources. Networks may be classified according to a wide variety of characteristics. A computer network allows sharing of resources and information among interconnected devices.
"File-sharing" is a platform-independent concept, that of sharing files between computers. If you are referring to the service / file system that allows other computers on the same network to access files on the local computer, this is usually done with NFS (Network File System). For compatibility with Windows, it is also possible to use Samba.
they are things you attach to your computer which allows it to connect to a network
Networked computers.
Noun A network protocol that allows a user on one computer to log on to another computer that is part of the same network.