Chapter 5 - LANS & WLANS

Question 1

AES

Answer 1

(Advanced Encryption Standard) An encryption standard that uses three seperate keye sizes and is based on the Rijndael encryption algorithm,

Question 2

Application Server

Answer 2

A computer on a network that is dedicated to running applications and delivering applications to client computers.

Question 3

Bandwith

Answer 3

the data transmission capacity of a communications channel. Digital signals are measured in bits oer second, analog signals in hertz.

Question 4

Bluetooth

Answer 4

A wireless technology used in conjuction with standard Ethernet networks that allows data transfer rates between 200 and 700 Kbps up to a maximum range of 35 feet.

Question 5

Bridge

Answer 5

A device that connects two similar networks by simply transferring data without regard to the network format.

Question 6

Broadband

Answer 6

A term used to refer to communications channels that have high bandwith.

Question 7

Bus Topology

Answer 7

A network arranged on a common backbone that connects all the network devices. If the backbone fails, the network becomes unusable.

Question 8

Ciphertext

Answer 8

An encrypted message, opposite of Plaintext.

Question 9

Circuit Switching

Answer 9

The method used by the telephone network to temporarily connect one telephone with another for the duration of a call.

Question 10

Client/Server Mode

Answer 10

A network where processing is split between workstations (clients) and the server.

Question 11

Communications Channel

Answer 11

Any pathway between the sender and receiver; channel may refer to a physical medium or frequency.

Question 12

Communications Protocol

Answer 12

A set of rules that ensures the orderly and accurate transmission and reception of data.

Question 13

Cryptographic Algorithm

Answer 13

A specifci procedure for encrypting and decrypting data.

Question 14

Cryptographic Key

Answer 14

A specific word, number, or phrase that must be used to encrypt or decrypt data.

Question 15

CSMA/CD

Answer 15

(Carrier Sense Multiple Access with Collidion Detection) A method of responding to an attempt by two devices to use a data channel simultaneously. Used by Ethernet networks.

Question 16

Decryption

Answer 16

The process of converting ciphertext into plaintext.

Question 17

DHCP

Answer 17

(Dynamic Host Configuration Protocol) A set of rules that allow nerwork client computers to find and use the Internet address that correspond to a domain name.

Question 18

Drive Mapping

Answer 18

A process of assigning a drive letter to a storage device located on a different network workstation.

Question 19

Encryption

Answer 19

The process of scrambling or hiding information so that it cannot be understood with the key necessary to change it back into its original form.

Question 20

Ethernet

Answer 20

A popular network technology in which network nodes are connect by coaxial cable or twisted-pair wire (eg. Cat-5).

Question 21

Ethernet Adapter

Answer 21

A type of network interface card designed to support Ethernet protocols.

Question 22

File Server

Answer 22

A network computer that is dedicated tos toring and distributing files to network clients.

Question 23

Gateway

Answer 23

A network device that connects two dissimilar networks even if the networks use different protocols.

Question 24

Handshaking

Answer 24

A process where a protocol helps two network devices communicate.

Question 25

Homegroup

Answer 25

A feature of Windows 7 that quickly creates a peer-to-peer network for sharing files and printers.

Question 26

HomePNA

Answer 26

(HPNA) A network technology that uses a building’s existing phone lines to connect nodes.

Question 27

Infrared Light

Answer 27

A transmission technology that uses a frequency range just below the visible light spectrum to transport data.

Question 28

IP Address

Answer 28

Unique identifying numbers assigned to each computer connected to the Internet.

Question 29

LAN

Answer 29

(Local Area Network) An interconnected group of computers and peripherals located within a relatively limited area, such as a building or campus.

Question 30

LAN Jacking

Answer 30

Unauthorized access to a wireless network; also called war driving.

Question 31

MAC Address

Answer 31

(Media Access Control) A unique identifier similar to a serial number assigned to networking equipment at time of manufacture.

Question 32

MAN

Answer 32

(Metropolitan Area Network) A public, high-speed network that can transmit voice and data with a range of 50 miles.

Question 33

Mesh Topology

Answer 33

A network arranged in such a way that each device is connected to many other devices. Data traveling on a mesh network can take any of several possible paths.

Question 34

Microwaves

Answer 34

Electromagnetic waves with a frequency of at least 1 gighertz; one type of channel for transmitting data over communications networks.

Question 35

MiFi

Answer 35

A small, wireless router that connects to a cellular data network, creating a mobile WiFi hotspot.