A computer network is a set of computers sharing resources located on or provided by network nodes. Computers use common communication protocols over digital See more

Most modern computer networks use protocols based on packet-mode transmission. A network packet is a formatted unit of data carried by a packet-switched network See more

Apart from any physical transmission media, networks are built from additional basic system building blocks, such as network interface controllers See more

A communication protocol is a set of rules for exchanging information over a network. Communication protocols have various characteristics. They may be connection-oriented See more

Computer networks extend interpersonal communications by electronic means with various technologies, such as email, instant messaging, online chat, voice and video telephone … See more

The physical or geographic locations of network nodes and links generally have relatively little effect on a network, but the topology of … See more

The transmission media (often referred to in the literature as the physical medium) used to link devices to form a computer network include electrical cable, optical fiber, and free space. In the OSI model, the software to handle the media is defined at layers 1 … See more