Network+ Chapter 12

Question 1

If you cannot connect to an AP and you’ve verified that your DHCP configuration and WEP key are correct. What would check next to get the AP working?

(p. 417)

Answer 1

check the MAC address filtering on the AP

Question 2

Why was Carrier Sense Multiple Access w/ Collision Avoidance created?

pb 385

Answer 2

to solve problems within the RF spectrum.

Question 3

what is the benefit of WPA over a static WEP key?

p. 420

Answer 3

WPA can change dynamically while the system is used.

Question 4

which employs multiple transmitters and receiver antennas to increase data throughput.

(p. 389).

Answer 4

multiple-input, multiple-output (MIMO)

Question 5

several antennae over several paths and are then recombined by another set of antennae to optimize throughput and multipath resistance

(p. 389).

Answer 5

spatial multiplexing

Question 6

is the simplest of all IEEE 802.11 networks in that no network infrastructure is required.

pg 395

Answer 6

independent basic service set

Question 7

provides the basic building-block of an 802.11 wireless LAN.

(p. 396).

Answer 7

basic service set (BSS),

Question 8

802. 11b uses a modulation technique called

p. 386

Answer 8

Direct Sequence Spread Spectrum (DSSS)

Question 9

If you cannot see an AP when trying to perform a site survey, verify that the AP has_____________ enabled.

(p. 416)

Answer 9

SSID beaconing

Question 10

T or F Yagi antennas usually provide less range than Omni antennas of equivalent gain.

p. 393

Answer 10

False

Question 11

CSMA/ CA also has an optional implementation called a_____________

pg 385

Answer 11

Request to Send, Clear to Send (RTS/ CTS)

Question 12

What are two methods you can use to protect against passive attacks?

pg 414

Answer 12

IDS/IPS

.

Question 13

What is the highest level of wireless encryption you can run?

p. 420

Answer 13

WPA2-AES.

Question 14

1. What is the maximum data rate of IEEE 802.11b?

Answer 14

54mbps

Question 15

What is a mobile Hot Spot?

pg 399

Answer 15

Its a device you can get from your mobile carrier to access the internet where you current do not have service.

Question 16

This connection from the access point to the wired network is called the____________and is referred to as___________?

pg 396

Answer 16

distribution system (DS)

wireless bridging.

Question 17

___________as exhibiting properties as velocity of light transmission with the same values when measured along axes in all directions.
(pp. 393-394).

Answer 17

isotropic

Question 18

refers to the unique 32-character identifier that represents a particular wireless network and defines the basic service set.

p. 396

Answer 18

SSID Service Set idenifier

Question 19

An______________ is a set of two or more BSSs that form a single sub network. pg 396-397

Answer 19

extended service set (ESS)

Question 20

Which IEEE committee has been sanctioned by WPA and is called WPA2?

pg 420

Answer 20

IEEE 802.11i