Chapter 22 Review: Wireless Networking

Question 1

802.11 implements _____ which proactively avoids network packet collisions rather than simply detecting them when they occur

Answer 1

CSMA/CA

Carrier Sense Multiple Access / Collision avoidance

Question 2

Which of the following is NOT an IrDA (infrared data association) advantage?

a. Must be within arm’s reach to establish a link, which provides security
b. Requires direct line of sight
c. Good for quick file transfers
d. Widely supported protocol stack

Answer 2

b. Requires direct line of sight

Question 3

Computers are in ______ mode when they connect together directly without using a WAP

Answer 3

peer to peer mode or ad hoc mode

Question 4

Out of the three common wireless data encryption protocols, ____ is the least secure

Answer 4

WEP (Wired equivalent privacy)

Question 5

What are some ways to extend the range of a WAP?

Answer 5

• Signal booster
• Install a new more powerful WAP
• Purchase multiple WAPs and allow roaming
• Use a wireless extender

Question 6

Bluetooth technology is most commonly used in what type of network?

Answer 6

PAN (personal area network)

Question 7

What is the primary function of the SSID

Answer 7

To identify a network and configure wireless connection

Question 8

What feature allows 802.11n and 802.11ac to achieve higher data throughput

Answer 8

MIMO (Multiple in multiple out)

Question 9

Class 3 bluetooth range:

Answer 9

1 meter (over 3 feet)

Question 10

Class 1 bluetooth range:

Answer 10

100 meters (over 300 feet)

Question 11

Class 2 bluetooth range

Answer 11

10 meters (over 30 feet)

Question 12

A ____ centrally connects wireless network nodes and may act as a switch our router

Answer 12

WAP

Question 13

To connect two devices via bluetooth, both devices must undergo a process called _____

Answer 13

Pairing

Question 14

What is the range of the 802.11b and 802.11g network?

Answer 14

300 feet

Question 15

List the three most common wireless data encryption types from least to most secure

Answer 15

WEP, WPA, WPA2

Question 16

What are some common ways to secure a wireless network?

Answer 16

• Placement of access point
• MAC filtering
• Disable SSID broadcast
• Set encryption

Question 17

_____ runs at speeds of up to 54 Mbps and has a limited range of 150 feet

Answer 17

802.11a

Question 18

_____ can limit wireless connectivity to a list of accepted users based on their wireless NIC address

Answer 18

MAC filtering

Question 19

802.11 is more commonly known as

Answer 19

Wi-Fi

Question 20

What 802.11 standard can use 2.4 and 5 Ghz bands?

Answer 20

802.11n

Question 21

What Wi-Fi standard has the following features:

54 mbps, 150 feet, 5 GHz

Answer 21

802.11a

Question 22

What Wi-Fi standard has the following features:

11 mbps, 300 feet, 2.4 GHz

Answer 22

802.11b

Question 23

What Wi-Fi standard has the following features:

1+ Gbps, 300 feet, 5 GHz

Answer 23

802.11ac

Question 24

What Wi-Fi standard has the following features:

54 Mbps, 300 feet, 2.4 GHz

Answer 24

802.11g

Question 25

What Wi-Fi standard has the following features:

100+ Mbps, 300 feet, 2.4 and 5 GHz

Answer 25

802.11n

Question 26

_______ usually involves one or more WAPs connected to a wired network segment connected to a corporate intranet, the Internet, or both

Answer 26

Infrastructure mode