| A | B |
|---|
| VPN (Virtual Private Network) | private network configured within a public network |
| DNS (Domain Name Server) | maps a TCP/IP number such as 172.16.4.245 to easily remember the name, such as interswift |
| Hub | an electronic device that connects several computers or networks together |
| Repeater (active hub) | regenerates and amplifies the data bits in order to maintain a strong signal that might otherwise deteriorate over a long distance |
| Bridge | controls flow of info between LAN networks or segments, even if they are different types of netwroks using different communication protocols |
| Brouter | a communication device that functions as both a bridge and a router |
| Gateway | a protocol converter that supports communication between netwroks that use different protocols |
| RJ-45 (Registered Jack-45) | a telelphone connector that holds up to 8 wires |
| Cat 5 (Category 5) | type of cable that has transfers rates of up to 100 Mbps |
| BNC Connector | used to join coaxial cables like RG-58 A/U into a network |
| Fiber-optic cable | carries pulses of laser light which are encoded with digital signals |
| Network Adapter | a printed circuit board that plugs into both the clients 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 |
| Full Duplex | Transmitting and receiving simultaneously |
| TCP/IP (Transmission Control Protocol/Internet Protocol) | is the suite of communications protocols used to connect hosts on the Internet and is now the global standarad for communications |
| IP Address | identifies a computer or device on a TCP/IP network |
| IPX (Internet Packet Exchange) | works at the Network Layer 3 of the OSI model |
| SPX (Sequenced Packet Exchange) | is the usual Transport LAyer 4 protocol that works with IPX in Layer 3 to guarantee that the packets sent out by IPX can be accurately assembled into the entire message by the destination node |
| NetBEUI (NetBIOS Enhaced User Interface) | at the same OSI layer (Transport) as the TCP/IP and IPX/SPX protocols and is supported by all versions of Windows automatically |
