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Lesson 1: Network F.
Lesson 1: Network
| Question | Answer |
|---|---|
| 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
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