| A | B |
|---|
| VPN | Virtual private network that is configured within a public network |
| DNS | domain name service. this service will map a tcp/ip to a more easily remembered name like www. interswift.com |
| Hub | a central connecting device in a network that joins communication lines together in a star configuration |
| repeater | a communications device that amplifies or regenerates the data signal in order to extend the transmission distance also referred to as active hub |
| bridge | an electronic device that controls the flow of information between lan segments and networks, eben if they are different types of networks using different communication protocols. |
| router | a device that determines the best path for a data packet to be sent from one network to another and forwards the message along that path |
| gateway | a computer that performs protocol conversion between different types of networks or applications |
| rj 45 | stands for registered jack 45. connector with eight cwires tha tis used to connect computers onto lan tha tuse twisted pair cabling |
| cat 5 | stands for category 5. type of cabling that consists of four twisted pairs of copper wire terminated by rj 45 connectors. |
| bnc connector | the type of connector most commonly used to join coax cables in a network |
| fiber optic cable | a cable that transfers pulses of light instead of electrical signals |
| network adapter | a printed circuit board that plugs into both thte clients personal comps and works and servers and contorl the exchange of data between them |
| half duplex | communicaton type in whcih communtiaon can occur in two directions, but only ino ne direction at a time |
| full duplex | communication type in which communication can occur in two directions ata the same time. |
| tcp/ip | transmission control protocol/ internet protocol. suite first saw usage on the dod internet in 83. amazingly successful and still in use |
| ip address | a unique 4 byte number that identifies a node on a tcp/ip network |
| ipx | stands for internetwork packet exchange. a netware communications protocol used to route messages from one node to another |
| spx | stands for sequenced packet exchange. the netware communctions protocol used to control the transport messages acroos a network |
| netbeui | Net Bios extended user interface. the transport layer for netbios |
