| A | B |
| VPN | virtual private netwok a private network that it is configure in a network |
| DNS | domain name service this service will map a TCP/IP number |
| Hub | a central conection point standerd termenolegy for a device that conects multiple computers to a network |
| Repeater | a comunication device that amplefies or regenerates the data signal in order to extend the transmission distance |
| Bridge | a bridge controls the information between lan segments or networks even if they are diferent networks using diferent comunication protocols |
| Brouter | is a comunication device that functions as both a bridge and a router |
| gate way | is a protocol converter that supports comunication between networks that use diferent protocols |
| RJ-45 | is an eight wire conector used to conect computers onto Local Area Networks that used twisted pair cables |
| CAT 5 | The majority of new wiring installations use Category 5 UTP wire in order to be able to run or upgrade to the faster network technologies that will require it. Categories 1 through 5 are based on the EIA/TIA-568 standard |
| BNC conector | the type of conector most commonly used to join coax cables in a network |
| fiber optic cable | a cable that transfes pulses of light instead of electrical signals |
| Network Adapter | a circuit board that controls the exchange of data between two computers |
| HALF DUPLEX | comunication can occur in two directions but only at one time |
| FULL DUPLEX | comunication can acurr in two diections at the same time |
| TCP/IP | the protocol suite used to conect host on the internet and other networks |
| IP adress | a unique 4 byte number that identefies a node on a tcp ip network |
| IPX | internetwork packet exchange a netware comunications protocol used to route messages from one node to onother |
| SPX | sequenced packet exchange the netware communications protocol used to control the transport of messages across the network |
| Net BEUI | net bios enhanced user interface the default networking protocol for the windows desk top operating system |