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LifeGuard Networks
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Glossary IP Solutions
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Server The computer on a network that provides services – such as file storage, print management, Internet access, and so on – to other computers on the network.

Shielded Twisted-Pair (STP) Cable Cable with a foil shield and copper braid surrounding the pairs of wires. STP provides high-speed transmission for long distances.

SMTP (Simple Mail Transfer Protocol) The e-mail host name. SMTP is the part of the system that sends the mail out to other e-mail servers on the Internet.

SNMP (Simple Network Management Protocol) A set of standards for communications with devices – such as routers, hubs, and switches – connected to a TCP/IP network. SNMP, a TCP/IP protocol, manages and monitors the network,.

SSL (Secure Sockets Layer) A protocol designed to enable encrypted, authenticated communications across the Internet.

Streaming Describes the constant flow of audio and video files so that they look like they’re running in real time, without pauses, jitters, or other interference.

Subnet Mask Enables the computer in one segment of a network to see computers in another segment. The ISP uses a subnet mask – such as – to communicate with other segments on the Internet network.

Subnetwork A smaller network connected to a larger and more powerful system by a bridge or router, computer’s network or disk access in a graphical manner. The program enables you to monitor running processes, memory usage, dial-up access, and more.

T1 A high-quality, reliable communications line. Total speed is 1.544 Mbps. Because of the expense, however, T1 is best for corporations connecting a large number of users.

TAPI (Telephony Application Programming Interface) TAPI provides the method programs needed to work with modems. All Windows communications programs communicate with TAPI, which then issues the appropriate commands to a modem.

TCP (Transmission Control Protocol) A higher-level protocol than IP, it provides continuing connections between programs. TCP also makes IP datagrams smaller and faster. TCP divides datagrams into smaller segments to fit the physical requirements of the servers on the network. It then uses IP to transmit the segments of data.

TCP/IP (Transmission Control Protocol/Internet Protocol) A network protocol used on the Internet and on local area networks. TCP/IP is a set of communications protocols supported by various manufacturers and vendors. Corporations, universities, and other agencies use TCP/IP to communicate over the Internet.

Telnet A terminal emulation protocol that enables you to connect to a remote service while in Windows, one of the TCP/IP protocols.

Terabyte A terabyte represents 1,000 gigabytes.

Terminal A device that enables you to send commands to a computer somewhere else. Terminals are simple, consisting of only a keyboard and monitor. Terminal emulation on your Windows computer displays a black screen on which you enter cryptic commands to connect to another computer.

Terminator A component or device that is placed at each end of a cable to absorb free signals.