Lesson 24: Network Fundamentals

Question 1

Biometric Security Measures

Answer 1

A technique or device that examines a fingerprint, voice pattern, or the iris or retina of the eye.

Question 2

Cable Modem

Answer 2

A device that uses coaxial cable to send and recieve data.

Question 3

Client

Answer 3

A computer that uses the services of another program.

Question 4

Client/Server Network

Answer 4

Computer configuration in which one or more computers an the network acts as a server.

Question 5

Communication Channels

Answer 5

Link from one computer to another through which data can be transmitted.

Question 6

Digital Subscriber Line (DSL)

Answer 6

An Internet connection technology that provides for the transer of information to a computer at high-speed bandwidth over ordinary copper telephone wires.

Question 7

Extranet

Answer 7

a network configuration that allows selected outside organizations to access internal informaton systems.

Question 8

Firewall

Answer 8

A combination of hardware and software that creates a buffer betwen an internal network and the Internet to prevent unauthorized access.

Question 9

Hacker

Answer 9

Expert computer user who invades someone else’s computer either for personal gain or simply for the satisfaction of being able to do it.

Question 10

Hub

Answer 10

A junction where information arrives from connected computers or peripheral devices and is then forwarded in one or more directions to other computers or devices.

Question 11

Internet

Answer 11

The largset network used as a communication tool.

Question 12

Intranet

Answer 12

A network designed for the exclusive use of computer users within an organization that cannot be accessed by users outside the organization.

Question 13

Local Area Network (LAN)

Answer 13

A series of connected personal computers, workstations, and other devices, such as printers or scanners, within a confined space, such as an office building.

Question 14

Modem

Answer 14

Communications hardware device that facilitates the transmission of data.

Question 15

Node

Answer 15

A device on the network.

Question 16

Peer-to-Peer Network

Answer 16

Computer architecture in which all of the computers on a network are equal and there is no computer designated as the server.

Question 17

Proxy Server

Answer 17

A server that acts as an intermediary between a user and the internet

Question 18

Public Switched Telephone Network (PSTN)

Answer 18

The wworld’s collection of interconnected commercial and government owned voice-oriented systems

Question 19

Router

Answer 19

A device that direct traffic on a network by dividing data into smaller packets that travel by different routes and then are reassembled at their destination.

Question 20

Server

Answer 20

A computer that handles requests for data, e-mail, file transfers, and other network services from other computers.

Question 21

Server Operating System

Answer 21

High-end programs designed to provide network control and include special functions for connecting computers and other devices into a network.

Question 22

T-1 Line

Answer 22

A type of fider-optic telephone line that can transmit up to 1,544 megabits per second or can be used to transmit 24 digitized voice channels.

Question 23

Wide Area Network

Answer 23

Compter network that covers a large geographical area. Most WANs are made up of several connected LANs.

Question 24

WiMAX

Answer 24

A recent wireless technology that can deliver maximum speeds of up to 7 Mbps to your cell phone, home computer, or car. Stands for Worldwide INterperability for Microwave Access.

Question 25

Wireless Internet Service Provider (WISP)

Answer 25

An ISP that provides connection speeds more than 30 times faster than dial-up connections - from 384 Kbps to 2.0 Mbps

Question 26

Wireless LAN (WLAN)

Answer 26

A variation of a LAN that uses no physical wires.