| A | B |
|---|
| VPN | A private network that is configured within a public network. |
| DNS | This service will map a TCp/IP number such as 172.16.4.245, to a easily remembered name |
| Hub | A central connecting devicein 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. |
| Bridge | an electonice device that controls the flow of information between LAN segements or networks, even if they are different types of networks |
| Brouter | A communication device that functions as both a bridge and a router, depending on which finction is needed |
| Gateway | A computer that performs protocol conversion between different types of networks or applications |
| RJ-45 | Connector with 8 wires that is used to connect computers onto Local Area Networks that use twistedpair cabling |
| 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 |
| 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 the clients (personal computers or workstations) and servers and controls the exchange of data between them. |
| Half duplex | The transmission of data in both directions, but only one direction at a time. Two-way radio was the first to use half-duplex, for example, while one party spoke, the other party listened |
| Full Duplex | Transmitting and receiving simultaneously. In pure digital networks, this is achieved with two pairs of wires. In analog networks or in digital networks using carriers, it is achieved by dividing the bandwidth of the line into two frequencies, one for sending, the other for receiving. |
| TCP/IP | the protocol suite used to connect hosts on the internet and other networks |
| IP Address | A unique 4-byte number that identifies a node on a TCP/IP network. Commonly in decimal format |
| IPX | A NetWare communications protocol used to route messages from one Node to another |
| SPX | A NetWare communications protocol ised to route messages across a network |
| NetBEUI | the default networking protocol for the Windows desktop operating system |
