HP Vectra VE C/xxx 7 HP Vectra VE C/xxx Series 7 PC - Network Administration G - Page 105

Glossary bus An electrical connection over which information is transported. bus topology A network topology in which all devices are connected to a central cable called the bus or backbone. Bus networks are relatively inexpensive and easy to install. Ethernet, a very popular LAN, uses a bus topology. byte A group of eight consecutive bits that are treated as one unit. channel A path between a sender and receiver that carries one stream of information. A two-way path is called a circuit. client A client PC is any PC connected to a network that does not act as a server. Client/Server Architecture A networking architecture in which each computer or process on the network is either a client or server. A server is a powerful computer or process dedicated to managing disk drives (file server), printers (printer server), or network traffic (network server). Clients are normally less powerful PCs or workstations on which users run applications and issue requests to servers for resources. coax cable A type of network medium. Coaxial cable contains a copper inner conductor surrounded by plastic insulation and then a woven copper or foil shield. It is commonly used in cable television and Ethernet networks. CRC Cyclic Redundancy Check. A CRC is calculated by the Media Access Control (MAC) transmit process and checked by the MAC receive process of a workstation to ensure integrity of the frame contents. CSMA Carrier Sense Multiple Access. CSMA is a medium-sharing scheme in which network workstations listen on the network medium and transmit only if the cable is not in use. CSMA is often combined with a collision detection scheme for more efficient data transmission. CSMA/CD Carrier Sense Multiple Access with Collision Detection. An enhancement to CSMA in which a network station stops transmitting if it detects a collision on the network cable. Demand Priority Protocol A request-based, deterministic protocol - a network end node connected to a 100VG hub makes a request (or "demand") to transmit, and then can transmit only when authorized by the hub. Under hub control, the Demand Priority Protocol guarantees network access for any end node that requests to transmit data. DLL Dynamic Link Library. A library of shared functions that applications can link in at runtime rather than at compile time. DMI Desktop Management Interface. The DMI allows management applications access to management data defined in MIF files. 105 English