#OS 정리 - Computer network / Computer Communication

출처 : http://en.wikipedia.org/wiki

Computer network 

A computer network or data network is a telecommunications network that allows computers to exchange data.

In computer networks, networked computing devices pass data to each other

along data connections.

The connections (network links) between nodes are established using either cable media or wireless media. The best-known computer network is the Internet.

Network computer devices that originate, route and terminate the data are called network nodes. Nodes can include hosts such as personal computers, phones, servers as well as networking hardware.

Two such devices are said to be networked together

when one device is able to exchange information with the other device,

whether or not they have a direct connection to each other.

Computer networks support applications such as access to the World Wide Web, shared use of application and storage servers, printers, and fax machines, and use of email and instant messaging applications.

Computer networks differ in the physical media used to transmit their signals, the communications protocols to organize network traffic, the network's size, topology and organizational intent.

Computer Communication

Computer-mediated communication (CMC) is defined as any communication that occurs through the use of two or more electronic devices. ^[1] While the term has traditionally referred to those communications that occur via computer-mediated formats (e.g., instant messaging, email, chat rooms), it has also been applied to other forms of text-based interaction such as text messaging.^[2] Research on CMC focuses largely on the social effects of different computer-supported communication technologies. Many recent studies involve Internet-based social networking supported by social software.