WHAT IS NETWORK ?

A network consists of two or more computers that are linked in order to share resources (such as printers and CD's), exchange files, or allow electronic communications. The computers on a network may be linked through cables, telephone lines, radio waves, satellites, or infrared light beams .

NETWORK PROTOCOL DEFINITIONS

A communications protocol is a system of digital message formats and rules for exchanging those messages in or between computing systems and in telecommunications. A protocol may have a formal description. Protocols may include signaling, authentication and error detection and correction capabilities.

NETWORK DEVICE DEFINITIONS

Any device that can support computer , communicate using Network Device e.g wireless , broadband , modem , networking cable and more .

NETWORK MEDIA DEFINITIONS

Computer networks can be classified according to the hardware and associated software technology that is used to interconnect the individual devices in the network, such as electrical cable (HomePNA,power line communication, G.hn), optical fiber, and radio waves (wireless LAN). In the OSI model, these are located at levels 1 and 2.