Installing and Configuring Networking Capabilities

Question 1

802.11

Answer 1

A family of specifications for wireless LAN communication.

Question 2

802.11a

Answer 2

A fast, secure, but relatively expensive protocol for wireless communication. The 802.11a protocol supports speeds up to 54Mbps in the 5GHz frequency.

Question 3

802.11ac

Answer 3

A specification for wireless data throughput at a rate of up to 2Gbps in the 5GHz range.

Question 4

802.11b

Answer 4

Also called Wi-Fi, short for “wireless fidelity”, 802.11b is probably the most common and certainly the least expensive wireless network protocol used to transfer data among computers with wireless network cards or between a wireless computer or device and a wired LAN. The 802.11b protocol provides for an 11Mbps transfer rate in the 2.4GHz frequency.

Question 5

802.11g

Answer 5

A specification for wireless data throughput at the rate of up to 54Mbps in the 2.4GHz band that is a potential replacement for 802.11b.

Question 6

802.11i

Answer 6

A complete wireless standard that adds strong encryption and authentication security to 802.11 and relies on 802.1x as the authentication mechanism.

Question 7

802.11n

Answer 7

A specification for wireless data throughput at a rate of up to 600Mbps in the 2.4GHz or 5GHz range. Released in 2009.

Question 8

ad hoc Mode

Answer 8

A method for wireless devices to communicate directly with each other without the use of an AP.

Question 9

AES (Advanced Encryption Standard)

Answer 9

A symmetric 128-, 192-, or 256-bit block cipher based on the Rijndael algorithm developed by Belgian cryptographers Joan Daemen and Vincent Rijmen and adopted by the U.S. government as its encryption standard to replace DES.

Question 10

AP (Access Point)

Answer 10

A device or software that facilitates communication and provides enhanced security to wireless devices.

Question 11

Auto Negotiation

Answer 11

Negotiates a speed that is compatible with the network router or switch.

Question 12

Beamforming

Answer 12

A feature of 802.11ac that transmits radio signals directly at a specific device using smart antennas.

Question 13

Directory

Answer 13

A component in a file system hierarchy that provides a container to organise files and other directories (folders). Also called a folder.

Question 14

Directory Service

Answer 14

On a network, a centralised database that includes objects such as servers, clients, computers, user names, and passwords, and provides centralised administration and authentication.

Question 15

DMZ (Demilitarised Zone)

Answer 15

A small section of a private network that is located between two firewalls and made available for public access.

Question 16

Encryption

Answer 16

The process of converting data into a form that is not easily recognised or understood by unauthorised entities.

Question 17

Folder

Answer 17

A component in a file system hierarchy that provides a container to organise files and other directories (folders). Also called a directory.

Question 18

Half Duplex

Answer 18

Permits two-way communication, but only in one direction at a time.

Question 19

Infrastructure Mode

Answer 19

A method for wireless devices to communicate with other devices by first connecting to an AP.

Question 20

NAT (Network Address Translation)

Answer 20

A simple form of internet connection and security that conceals internal addressing schemes from the public internet.

Question 21

Network Directory

Answer 21

On a network, a centralised database that includes objects such as servers, clients, computers, user names, and passwords, and provides centralised administration and authentication.

Question 22

Prestaging

Answer 22

The process of creating computer accounts in Windows Active Directory before joining the computers to the domain.

Question 23

Proxy

Answer 23

A system that acts as an intermediary for requests for resources.

Question 24

QoS (Quality of Service)

Answer 24

A set of parameters that controls the level of quality provided to different types of network traffic.

Question 25

Remote Desktop

Answer 25

A software application that operates a Windows computer from a remote location.

Question 26

SLA (Service Level Agreement)

Answer 26

An agreement entered into by the transmitter, or ISP, and the receiver, or subscriber.

Question 27

SSID (Service Set Identifier)

Answer 27

A 32-bit alphanumeric string that identifies a wireless access point and all devices that connect to it.

Question 28

TKIP (Temporal Key Integrity Protocol)

Answer 28

A security protocol created by the IEEE 802.11i task group to replace WEP.

Question 29

UPnP (Universal Plug and Play)

Answer 29

A feature found in wireless routers to enable computers, printers, and other Wi-Fi-enabled devices to be easily discoverable by the router.

Question 30

WAP (Wireless Access Point)

Answer 30

A device that provides connection between wireless devices and can connect to wired networks.

Question 31

WEP (Wired Equivalent Privacy)

Answer 31

Provides 64-bit, 128-bit, and 256-bit encryption for wireless communication that uses the 802.11a and 802.11b protocols.

Question 32

Wireless Encryption

Answer 32

The process of concealing and protecting data during wireless transmissions.

Question 33

WOL (Wake-on-LAN)

Answer 33

A networking capability that is built into a device’s NIC circuitry that allows a device to turn on, or power up when a network message is received by another computing device.

Question 34

WPA (Wi-Fi Protected Access)

Answer 34

A strong authentication security protocol that was introduced to address some of the shortcomings in the WEP protocol during the pending development of the 802.11i IEEE standard.

Question 35

WPA2 (Wi-Fi Protected Access version 2)

Answer 35

A complete wireless standard that adds strong encryption and authentication security to 802.11 and relies on 802.1x as the authentication mechanism.