| A | B |
|---|
| VPN | Virtual PUble Netowork; a priovate network that is congifgured within a public network; has extra security and a HUGE Growth in VPN is expected |
| DNS | Domain Name Service; Maps a TCP/IP number such as 172.23.24.123 to a easier name to remember like www.yahoo.com |
| Hub | a electronic device that connects several computers or networks together |
| Repeater | regenerates and amolifies the data bits in order to maintain a strong signal that might otherwise deteriorate over a long distance |
| Bridge | controls the flow of information between LAN segments or networks. even if they are diff types of networks using diff comm. protocols |
| Brouter | is a communication device that functions as both a bridge and a router |
| Gateway | is a protocol converter that supports communication between networks that use diff protocols |
| RJ-45 | the connecttion used on an ethernet cable |
| Cat 5 | 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 | used to join a coaxial network 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 transmission medium such as twister pair, coax, or fiber optic |
| Half Duplex | Transfer of Data in both directions but one direction at a time |
| Full Duplex | transmitting and receiving simultaneously |
| TCP/IP | TCP- provides transport functions, which ensures the complete message is received correctly at the other end; IP specifies the format of packets |
| IP address | identifies a computer or device on a TCP/IP network; made up of 4 bytes or 32 bits. decimal equivalent and separated by periods |
| IPX | Internetwork Packet Exchange; works at the netowork 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 guarentee that the packets sent out by IPX can be accurately assembled into the entire message by the destination node |
| NetBEUI | Net BIOS Extended user Interface; transport layer for NEtBios and NetBEUI were part of a single protocol suite that was separated NetBIOS sessionstransp. over NetBEUI, ICP/IP and SPX/IPX protocols |
