Protocol ?
Communication languages used by computer devices are called network protocols. Yet another way to classify computer networks is by the set of protocols they support. Networks often implement multiple protocols with each supporting specific applications. Popular protocols include TCP/IP, the most common protocol found on the Internet and in home networks.
Network Devices?
Network devices are components used to connect computers or other electronic devices together so that they can share files or resources like printers or fax machines. Devices used to setup a Local Area Network (LAN) are the most common type of network devices used by the public. A LAN requires a hub, router, cabling or radio technology, network cards, and if online access is desired, a high-speed modem. Happily this is much less complicated than it might sound to someone new to networking.
Network Media?
communication signal is carried from one system to another (for example, twisted-pair wire, co axial cable, fiber-optics cable) and wireless links (for example, satellite, microwave and radio and infrared systems).
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