Computer Networks and Data Communication Flashcards
What is a “client” on a computer network?
A node, usually a microcomputer, which is used by end users; uses but usually does not supply network resources.
What is a “local area network (LAN)”?
Originally confined to very limited geographic areas (a floor of a building, a building, or possibly a couple of buildings in very close proximity to each other). Inexpensive fiber optic cable now enables local area networks to extend many miles.
Define “file server”.
In a local area network, a computer that provides centralized access to program and data files.
What is a “server”?
Computer or other device on a network which only provides resources to the network and is not available (normally) to individual users; examples include print servers, file servers, and communications servers. Contrast with a workstation.
What is a “client server system”?
A central machine (the server) mediates communication on the network and grants access to network resources. Client machines use of network resources and also perform data processing functions; used by LANs.
Define “Bluetooth”.
Wireless transmission medium. It uses the same radio frequencies as WiFi, but with lower power consumption resulting in a weaker connection. It is used to provide a direct communications link between two devices (e.g., a cell phone and ear piece, computer and a printer).
What is a “peer-to-peer network”?
A network system in which all nodes share in communications management. No central controller (server) is required. These systems are relatively simple and inexpensive to implement; used by LANs.
What is a “computer network”?
Two or more computing devices connected by a communication channel on which the devices exchange data.
What is a wide area network (WAN)?
These networks vary dramatically in geographic coverage. Most WANs are national or international in scope.
What is a “node”?
A device connected to a computer network.
