02-10-2012, 04:57 PM
Computer Network
Computer Network.doc (Size: 38 KB / Downloads: 27)
More than one computer interconnected through a communication medium for information interchange is called a computer network. A computer network, often simply referred to as a network, is a collection of computers and other hardware components interconnected by communication channels that allow sharing of resources and information.
Networks may be classified according to a wide variety of characteristics, such as the medium used to transport the data, communications protocol used, scale, topology, and organizational scope.
Properties of computer networks
Advantages:-
Computer networks:
Facilitate communications
Using a network, people can communicate efficiently and easily via email, instant messaging, chat rooms, telephone, video telephone calls, and video conferencing.
Permit sharing of files, data, and other types of information
In a network environment, authorized users may access data and information stored on other computers on the network. The capability of providing access to data and information on shared storage devices is an important feature of many networks.
Share network and computing resources
In a networked environment, each computer on a network may access and use resources provided by devices on the network, such as printing a document on a shared network printer.
Disadvantages:-
May be insecure
A computer network may be used by computer hackers to deploy computer viruses or computer worms on devices connected to the network, or to prevent these devices from normally accessing the network (denial of service).
May interfere with other technologies
Power line communication strongly disturbs certain forms of radio communication, e.g., amateur radio.
May be difficult to set up
A complex computer network may be difficult to set up. It may also be very costly to set up an effective computer network in a large organization or company.
Today, computer networks are the core of modern communication. All modern aspects of the public switched telephone network are computer-controlled, and telephony increasingly runs over the Internet Protocol, although not necessarily the public Internet. The scope of communication has increased significantly in the past decade, and this boom in communications would not have been possible without the progressively advancing computer network. Computer networks, and the technologies needed to connect and communicate through and between them, continue to drive computer hardware, software, and peripherals industries
Computer Network.doc (Size: 38 KB / Downloads: 27)
More than one computer interconnected through a communication medium for information interchange is called a computer network. A computer network, often simply referred to as a network, is a collection of computers and other hardware components interconnected by communication channels that allow sharing of resources and information.
Networks may be classified according to a wide variety of characteristics, such as the medium used to transport the data, communications protocol used, scale, topology, and organizational scope.
Properties of computer networks
Advantages:-
Computer networks:
Facilitate communications
Using a network, people can communicate efficiently and easily via email, instant messaging, chat rooms, telephone, video telephone calls, and video conferencing.
Permit sharing of files, data, and other types of information
In a network environment, authorized users may access data and information stored on other computers on the network. The capability of providing access to data and information on shared storage devices is an important feature of many networks.
Share network and computing resources
In a networked environment, each computer on a network may access and use resources provided by devices on the network, such as printing a document on a shared network printer.
Disadvantages:-
May be insecure
A computer network may be used by computer hackers to deploy computer viruses or computer worms on devices connected to the network, or to prevent these devices from normally accessing the network (denial of service).
May interfere with other technologies
Power line communication strongly disturbs certain forms of radio communication, e.g., amateur radio.
May be difficult to set up
A complex computer network may be difficult to set up. It may also be very costly to set up an effective computer network in a large organization or company.
Today, computer networks are the core of modern communication. All modern aspects of the public switched telephone network are computer-controlled, and telephony increasingly runs over the Internet Protocol, although not necessarily the public Internet. The scope of communication has increased significantly in the past decade, and this boom in communications would not have been possible without the progressively advancing computer network. Computer networks, and the technologies needed to connect and communicate through and between them, continue to drive computer hardware, software, and peripherals industries