Question 1

Given: Adjacent Channel Interference (ACI) can cause frame corruption and poor performance in WLANs. You are using a protocol analyzer in the attempt to detect ACI. What should you look for in such a scenario?

Options :

A : Look at Retry counts

B : Capture on the channel you think may be impacted by ACI and see if any frames are captured from adjacent channels

C : Look for frames with a low signal strength value in the radio tap header

D : Look at CRC errors

Answer: B

Question 2

You are explaining capacity planning to another engineer assisting you on a WLAN implementation project. As part of the explanation, you provide the following formula: C = B * log2(1 + S/N). What does this formula define?

Options :

A : Bandwidth capabilities of a channel

B : The WEP encryption algorithm

C : Minimum signal strength for a data rate

D : Maximum signal strength of a channel

Answer: A

Question 3

In a Spectrum Analyzer the Swept Spectrogram plot displays what information?

Options :

A : RF power present at a particular frequency over the course of time

B : Reductions in frame transmissions

C : Wi-Fi Device information

D : The RF time domain

Answer: A

Question 4

What action is taken automatically by 802.11 APs and client STAs as the signal strength of the link weakens in order to improve the quality of the RF communications overall?

Options :

A : Output power is increased

B : RSSI is increased

C : Data rates are reduced

D : Antenna gain is increased

Answer: C

Question 5

What should the To DS and From DS flags be to set to in an Association Response frame?

Options :

A : To DS = 1, From DS = 1

B : To DS - 1, From DS = 0

C : To DS - 0, From DS = 0

D : To DS = 0, From DS = 1

Answer: D