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CWNP CWAP-404 Exam Dumps

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CWAP-404 Pack
Vendor: CWNP
Exam Code: CWAP-404
Exam Name: Certified Wireless Analysis Professional Exam
Exam Questions: 60
Last Updated: March 2, 2026
Related Certifications:
Exam Tags: Professional Wireless networking professionalsEngineers
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Free CWNP CWAP-404 Exam Actual Questions

Question No. 1

Which one of the following should be the first step when troubleshooting a WLAN issue?

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Correct Answer: D

The first step in any troubleshooting process is to define the problem. This involves gathering information from various sources, such as users, network administrators, network documentation, and network monitoring tools.Defining the problem helps to narrow down the scope of the issue and identify the symptoms, causes, and effects of the problem12Reference:

CWAP-403 Study Guide, Chapter 1: Troubleshooting Methodology, page 7

CWAP-403 Objectives, Section 1.1: Define the problem


Question No. 2

Which one of the following is an advantage of using display filters that is not an advantage of capture-time filters?

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Correct Answer: C

Display filters are applied after the capture is completed and they only hide the packets from view. The filtered packets are still present in the capture file and can be enabled for view later by changing or removing the display filter.This is an advantage over capture-time filters, which discard the packets that do not match the filter criteria and cannot be recovered later34Reference:

CWAP-403 Study Guide, Chapter 2: Protocol Analysis, page 37

CWAP-403 Objectives, Section 2.3: Apply display filters


Question No. 3

You are performing a multiple adapter channel aggregation capture to troubleshoot a VoIP roaming problem and would like to measure the roaming time from the last VoIP packet sent on the old AP's channel to the first VoIP packet sent on the new AP's channel. Which timing column in the packet view would measure this for you?

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Correct Answer: D

Delta is the timing column in the packet view that measures the time difference between two consecutive packets in a capture file. Delta can be used to measure the roaming time from the last VoIP packet sent on the old AP's channel to the first VoIP packet sent on the new AP's channel by selecting these two packets and looking at their delta values. The other timing columns are not suitable for this measurement because they do not show the time difference between two specific packets. Roaming is a column that shows whether a packet belongs to a roaming event or not. Relative is a column that shows the time elapsed since the beginning of the capture file.Absolute is a column that shows the date and time when a packet was captured5Reference:

CWAP-404 Study Guide, Chapter 2: Protocol Analysis, page 57

CWAP-404 Objectives, Section 2.4: Analyze timing values


Question No. 4

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 BSSIDs of your customers APs and the destination address is FF:FF:FF:FF:FF:FF:FF.

What do you conclude from this troubleshooting exercise?

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Correct Answer: B

The 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. This is because the Deauthentication frames have a source address that matches the BSSIDs of the customer's APs and a destination address that is a broadcast address (FF:FF:FF:FF:FF:FF). This indicates that someone is sending spoofed Deauthentication frames to all STAs associated with the customer's APs, causing them to disconnect from the wireless network.This is a common type of DoS attack on wireless networks, and it could be caused by a rogue device or a WIPS solution that is configured to protect the wireless network of another tenant on the floor below12. Reference: CWAP-404 Certified Wireless Analysis Professional Study and Reference Guide, Chapter 13: Troubleshooting Common Wi-Fi Issues, page 4961; CWAP-404 Certified Wireless Analysis Professional Study and Reference Guide, Chapter 14: Troubleshooting Tools, page 5272.


Question No. 5

What is the function of the PHY Preamble?

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Correct Answer: D

The function of the PHY preamble is to allow the receiver to detect and synchronize with the signal. The PHY preamble is a part of the PPDU that is transmitted before the PHY header and the PSDU. The PHY preamble consists of a series of training fields that help the receiver to adjust its parameters, such as frequency, timing, and gain, to match the incoming signal. The PHY preamble also helps the receiver to estimate the channel conditions and noise level.Reference:[Wireless Analysis Professional Study Guide CWAP-404], Chapter 4: 802.11 Physical Layer, page 99-100


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