chapter 7 quiz

JAWABAN CHAPTER 7 QUIZ:

1.why is ieee 802.11 wireless technology able to transmit further distances than Bluetooth technology:

·         Transmits at much lower frequencies

·         Has higher power output

·         Transmits at much higher frequencies

·         Uses better encryption methods

2.what are three advantages of wireless over wired LAN technology?(choose three)

·         Lower on going costs

·         Longer transmission distances

·         Ease of installation

·         Easily expandable

·         Higher level of security

·         Cheaper host adapters

3.in which scenario would wireless security be most important?

·         Your wireless mouse uses he irDA port on your destop PC

·         The local coffee shop provides free internet access as a wireless hot spot

·         A real estate agent sends imformation on sale of a house through a cell phone

·         Two users create a wireless peer to peer network in order to share a music file

4.which wireless technology standard provides the most compatibility with older wireless standards,but has greater performance?

·         802.11a

·         802.11b

·         802.11g

·         802.11n

5.drag the characteristic on the left to the WLAN component on he right

Wireless client

Participates as a host devicein a wireless network

Referred to as a STA

Access point

Acts as a media converter

Controls access beween a wired and wireless network

Wireless bridge

Connect two wired networks through a wireless link

Allows long range point to point connections between network

6.drag the characteristic on the left to the installation type on te right

Ad-hoc

Usually a less expensive network

Two or more wireless clients in peer to peer

Does not include an AP

Infrastructure mode

Individual STAs do not communicate directly with each other

an AP controls who talks and when

Larger network require this type of instalation

7.what is CSMA/CA on a network?

·         An access method used by wireless technology o avoid duplicate SSIDs

·         An access method used by any technology that has excessive collisions

·         An access method used by wired Ethernet technology to avoid collisions

·         An access method used by wireless technology to avoid collisions

8.drag the ststement on the left to the category on the right

true

A wireless hacker within radio range of any access point could launch an attack

If someone you don’t know gains access o your wireless network,they can use your internet connection

False

The purpose of war challing is o attack a wireless nework and deny access o the internet to the wireless network owner

A wireless attacker needs pyisical access to your network in order to launch an attack

9.what statement is true about authentication using pre shared keys when EAP is enabled?

·         Uses a key to encrypt a random string of bytes sent by the AP

·         Requires a backend authentication server such as RADIUS

·         Performs one way authentication only

·         Allows client to associate based on MAC addres

10.when is client considered to be authenticated when only mac addres filtering is enabled on the access point?

·         When the client gives the access points the correct

·         When the client sends the mac address to the access point

·         When the access points verifies that the mac address is in the mac table and sends a confirmation message to the client

·         When the access point sends the mac address to the server and receives notification that the mac address is a valid one

11.drag the statement on the left to the category on the right

true

A mac address of a pc can be used by another pc controlled by another one

The mac address filtering feature requires manual entry of approved mac addresses

false

The mac address filtering feaure requires EAP to be enabled

A wireless access point with mac filtering configuredbdisables non authorized wireless NICs

12.drag the term on the left to the category on the right.note that all terms will be used

authentification

Open

Pre-shared keys

EAP

encription

WPA

WEP