Local Area Network (LAN) -- a computer network limited to an immediate area, usually the same building or floor of a building. Most office computers are connected to a LAN.

Local Access and Transport Area (LATA) -- a geographic area in which local telephone companies are allowed to provide telecommunications services.

Leased Line -- a phone line that can be purchased from the telephone company that is yours only. With the assurance that you are the only one on the line, you can work at faster speeds and stay connected 24 hours a day. The highest speed data connections (ex: T1 and T3) require a leased line.

Local Dial-up Internet Access -- an Internet connection that uses a modem and a telephone line to connect to the Internet. Operates at a speed of 56 kilobits per second.

Login -- the account name used to access a computer system or, when used as a verb, the act of typing your username and password at a computer terminal.

Logoff -- to disconnect from a network or remote system.