Question 1

A manufacturing facility has installed a new automation system which incorporates an 802.11 wireless network. The automation system is controlled from tablet computers connected via the WLAN. However, the automation system has not gone live due to problem with the tablets connecting to the WLAN. The WLAN vendor has been onsite to perform a survey and confirmed good primary and secondary coverage across the facility. As a CWAP you are called in to perform Spectrum Analysis to identify any interference sources. From the spectrum analysis, you did not identify any interference sources but were able to correctly identify the issue. Which of the following issues did you identify from the spectrum analysis?

Options :

A : The tablets are connecting to the wrong SSID

B : The tablets are entering power save mode and failing to wake up to receive the access points transmissions

C : A high noise floor has resulted in a SNR of less than 20dB

D : There is a power mismatch between the APs and the clients

Answer: D

Question 2

After examining a Beacon frame decode you see the SSID Element has a length of 0. What do you conclude about this frame?

Options :

A : The frame is corrupted

B : SSID elements always have a length of 0

C : This is a common attack on WISP backend SQL databases

D : The beacon is from a BSS configured to hide the SSID

Answer: D

Question 3

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

Question 4

A manufacturing facility has installed a new automation system which incorporates an 802.11 wireless network. The automation system is controlled from tablet computers connected via the WLAN. However, the automation system has not gone live due to problem with the tablets connecting to the WLAN. The WLAN vendor has been onsite to perform a survey and confirmed good primary and secondary coverage across the facility. As a CWAP you are called in to perform Spectrum Analysis to identify any interference sources. From the spectrum analysis, you did not identify any interference sources but were able to correctly identify the issue. Which of the following issues did you identify from the spectrum analysis?

Options :

A : The tablets are connecting to the wrong SSID

B : The tablets are entering power save mode and failing to wake up to receive the access points transmissions

C : A high noise floor has resulted in a SNR of less than 20dB

D : There is a power mismatch between the APs and the clients

Answer: D

Question 5

Finish the statement: It is possible to distinguish between_______22 MHz transmissions and________20 MHz transmissions when looking at an FFT plot.

Options :

A : HR/DSSS and ERP

B : OFDM and HT

C : ERP and VHT

D : HT and VHT

Answer: B

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