Lesson 1: Network
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| 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.
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| Cable modem | Uses coaxial cable to send and receive data
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| Client | A software program such as Internet Explorer.
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| Client/server network | Software architectural model relationship
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| Communication channels | Can include telephone systems, fiber optics, satellites, microwaves, or any combination of these.
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| 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.
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| Extranet | Similar to an intranet, but allows specific users outside of the organization to access internal information systems.
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| Firewall | Special hardware and software that protect individual companies’ networks from external networks.
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| Hacker | Person who breaks into computer systems to steal services and information.
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| Hub | Small, simple, inexpensive device that joins multiple computers together.
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| Internet | Worldwide system composed of thousands of smaller networks.
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| Intranet | A network designed for the exclusive use of people within an organization
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| Local area network (LAN) | Connects personal computers, workstations, and other devices such as printers and scanners in a limited geographical area.
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| Modem | Device that enables a computer to transmit voice data over telephone lines.
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| Node | A device on a network; generally shares resources such as printers, software, and other hardware.
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| Peer-to-peer network | A network in which all the computers are equal; no computer is designated as the server.
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| Proxy server | Acts as an intermediary between a user and the Internet to ensure security, administrative control, and caching service.
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| Public Switched Telephone Network (PSTN) | World’s collection of interconnected commercial and government-owned voice-oriented systems.
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| Router | Connects two or more LANS to form a WAN.
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| Server | Hardware such as a mail server, a database server, an FTP server, an application server, or a Web server
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| Server operating system | High-end program designed to provide network control that includes special functions for connecting computers and other devices into a network.
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| T-1 line | A type of fiber-optic telephone line that can transmit up to 1.544 megabits per second.
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| Wide area network (WAN) | Covers a large geographical area and can contain communication links across metropolitan, regional, or national boundaries
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| WiMAX | A recent wireless technology that can deliver maximum speeds of up to 7 Mbps to your cell phone, home computer, or car.
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| Wireless Internet service provider (WISP) | Provides connection speeds more than 30 times faster than dial-up connections.
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| Wireless LAN (WLAN) | A variation of a LAN that uses no physical wires.
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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Created by:
ZuhairA
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