Communications networks interconnected by bridges, routers, or gateways. Any communications device between two nodes attached to a network. A device which converts digital data to an analog signal and vise-versa. Any computer, terminal or device on a network. Undesirable disturbances in a communications system.
Noise generates errors.
A group of bits that include data and control information. A device that receives, amplifies, and retransmits a signal. A LAN topology where each computer is attached to another in a closed loop. An analog device that permits signals to be placed or removed on a cable medium. A password or character sequence used by network nodes to access a network.