CWNP CWAP-403 Exam Practice Test Instant Access

Question 1

Where, in a protocol analyzer, would you find an indication that a frame was transmitted as part of an AMPDU?

AThe HT Operation Element

BA-MPDU flag in the HT Control Field

CA-MPDU flag in the Frame Control Field

DThe Aggregation flag in the Radio Tap Header

Answer : B

Question 2

You are analyzing a packet decode of a Probe Request and notice the SSID element has a length of zero.

What do you conclude about transmitting STA?

AThe WLAN adaptor is configured in promiscuous mode

BThe STA is operating in Ad-Hoc mode

CThe STA's WLAN adaptor is disabled

DThe STA is discovering a list of available BSSs

Answer : B

Question 3

As a wireless network consultant you have been called in to troubleshoot a high-priority issue for one of your customers. The customer's office is based on two floors within a multi-tenant office block. On one of these floors (floor 5) users cannot connect to the wireless network. During their own testing the customer has discovered that users can connect on floor 6 but not when they move to the floor 5. This issue is affecting all users on floor 5 and having a negative effect on productivity.

To troubleshoot this issue, you perform both Spectrum and Protocol Analysis. The Spectrum Analysis shows the presence of Bluetooth signals which you have identified as coming from wireless mice. In the protocol analyzer you see the top frame on the network is Deauthentication frames. On closer investigation you see that the Deauthentication frames' source addresses match the BSSISs of your customers APs and the destination address is FF:FF:FF:FF:FF:FF:FF.

What do you conclude from this troubleshooting exercise?

AThe customer should replace all their Bluetooth wireless mice as they are stopping the users on floor 5
from connecting to the wireless network

BThe users on floor 5 are being subjected to a denial of service attack, as this is happening across the
entire floor it is likely to be a misconfigured WIPS solution belonging to the tenants on the floor below

CThe customers APs are misbehaving and a technical support case should be open with the vendor

DThe CCI from the APs on the floor 4 is the problem and you need to ask the tenant below to turn down their AP's Tx power

Answer : A

Question 4

How does a VoIP Phone, using WMM Power Save, request data frames buffered at the AP?

AThe VoIP phone transmits a PS-Poll frame

BThe VoIP phone transmits a trigger frame

CThe VoIP phone sets the More Data bit in the MAC Header to 1

DThe VoIP phone The VoIP transmits a WMM Action frame

Answer : B

Question 5

What Interframe space would be expected between a CTS and a Data frame?

ASIFS

BDIFS

CAIFS

DPIFS

Answer : A

Question 6

Finish the statement. It is possible to distinguish between _______and ______20 MHz transmissions when looking at an FFT plot.

AHR/DSSS and ERP

BERP and VHT

CHT and VHT

DOFDM and HT

Answer : C

Question 7

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?

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

BA high noise floor has resulted in a SNR of less than 20%

CThe tablets are connecting to the wrong SSID

DThere is a power mismatch between the APs and the clients

Answer : A

CWNP CWAP-403 Certified Wireless Analysis Professional (CWAP) Exam Practice Test