Computer network
- 1. Computer Network Components of a network
- 2. Computer Network: A collection of two or more computer that is linked together through communication medium (wired or wireless), in order to share computer resources and information is called a computer network or simply a network.
- 4. Components of a network: A computer network is composed of the following components
- 5. Sending Device: A device which sends any information in the form of data or instructions is called a sending device. It is also called “source” or “transmitter”. Normally computer is used as a sending device in data communication system.
- 6. Receiving Device: A device that accepts the transmitted data is called a receiving device. It is also known as “Sink”. The receiving device may be a computer, printer, plotter etc.
- 7. Communication Devices: A device that is used for communication among the computer and other device is called communication device. One of the most popular and most widely used communications is Modem. Modem is normally used for internet communication. Other examples of communication device are Network interface card, Bluetooth, Wi-Fi etc.
- 8. Transmission Medium: A transmission medium is used for caring communication signals (data) from one place to another. The most common type of transmission media used with wired computer network are twisted pair cable, coaxial cable, fiber-optic cables etc. whereas satellite, microwave and infra red are commonly used for wireless computer networks.