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Lesson 1: Network F.

Lesson 1: Network

QuestionAnswer
Biometric security measures Method of high-level security that examines a fingerprint, voice pattern, or the iris or retina of the eye and matches it with the original entry in the system.
Cable modem Uses coaxial cable to send and receive data
Client A software program such as Internet Explorer.
Client/server network Software architectural model relationship
Communication channels Can include telephone systems, fiber optics, satellites, microwaves, or any combination of these.
Digital subscriber line (DSL) Internet connection technology that provides for the transfer of information to a computer at high-speed bandwidth over ordinary copper telephone lines.
Extranet Similar to an intranet, but allows specific users outside of the organization to access internal information systems.
Firewall Special hardware and software that protect individual companies’ networks from external networks.
Hacker Person who breaks into computer systems to steal services and information.
Hub Small, simple, inexpensive device that joins multiple computers together.
Internet Worldwide system composed of thousands of smaller networks.
Intranet A network designed for the exclusive use of people within an organization
Local area network (LAN) Connects personal computers, workstations, and other devices such as printers and scanners in a limited geographical area.
Modem Device that enables a computer to transmit voice data over telephone lines.
Node A device on a network; generally shares resources such as printers, software, and other hardware.
Peer-to-peer network A network in which all the computers are equal; no computer is designated as the server.
Proxy server Acts as an intermediary between a user and the Internet to ensure security, administrative control, and caching service.
Public Switched Telephone Network (PSTN) World’s collection of interconnected commercial and government-owned voice-oriented systems.
Router Connects two or more LANS to form a WAN.
Server Hardware such as a mail server, a database server, an FTP server, an application server, or a Web server
Server operating system High-end program designed to provide network control that includes special functions for connecting computers and other devices into a network.
T-1 line A type of fiber-optic telephone line that can transmit up to 1.544 megabits per second.
Wide area network (WAN) Covers a large geographical area and can contain communication links across metropolitan, regional, or national boundaries
WiMAX A recent wireless technology that can deliver maximum speeds of up to 7 Mbps to your cell phone, home computer, or car.
Wireless Internet service provider (WISP) Provides connection speeds more than 30 times faster than dial-up connections.
Wireless LAN (WLAN) A variation of a LAN that uses no physical wires.
Created by: ZuhairA