Some Important Definition for Network engineer

Directory service: A database containing about network entities and resource. Such as active directory for windows 2000 server, bindery for novel Net Ware.

Domain :Domain is a groups of workstation and other devices on a network that are administrated as a single unit.

Domain controller: A computer configured by  windows 2000/2003/2007 that is designated to store and manage directory services information.\

Domain Name service: an service which map IP address to Domain name.

 Driver :  a software by which operation system communicate with hardware.

DHCP : Dynamic Host configuration Protocol is a service which provide IP address to the network automatically.

Dynamic Routing : by this routing systems router builds  a routing table automatically by specialized protocol.    

EIA/TIA: Electrical Industry Association/ Telecommunication Industry Association

FDDI : Fiber Distributed Data interface

fiber Optic: a network cable use a technology that uses light to send signal  rather than electrical charge use by copper cables.

FTP : File Transfer protocol, work application layer on OSI systems

Full Duplex: a form of network communication in which to connected systems can send signals at a time such telephone line.

Half Duplex: a form of network communication in which to connected systems can send signals in one direction at a time such as radio

Hops : In an internetwork each router is a hop.

hosts : An ASCII text file which is used by TCP/IP computer to resolve host name to IP address.

Hub : Hub is a network device which is used in star network  topology to connect the computer with each other.

 IPCONFIG : a command line utility to know the ip configuration of a computer.

 incremental Backup :  incremental Backup systems is a  backup systems by which we can backs up which was modified or created after the last incremental or full backup. this systems sets archives bit.

IEEE : International Electrical and Electronic  Engineers: A organization formed on 1984 which is dedicated to development and publication of standard for the computer and electronics industries