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CWNP CWAP-404 Exam Certification Details:

Recommended Training	CWAP self-paced training kit, Training Class
Exam Price	$275 USD
Sample Questions	CWNP CWAP-404 Sample Questions
Duration	90 minutes
Passing Score	70%
Exam Registration	PEARSON VUE
Number of Questions	60
Exam Code	CWAP-404 CWAP

>> Real CWNP CWAP-404 Braindumps <<

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CWNP Certified Wireless Analysis Professional Sample Questions (Q97-Q102):

NEW QUESTION # 97
You have installed a new 802.1 lac WLAN configured with 80 MHz channels. Users in one area are complaining about poor performance. This area is currently served by a single AP. You take a spectrum analysis capture in the poor performing area. While examining the waterfall plot you notice the airtime utilization is higher on the first 20 MHz of the 80 MHz channel when compared to the rest of the channel.
What do you conclude?

A. Non-Wi-Fi interference is preventing the APs 80 MHz operation
B. The AP is misconfigured and needs to be reconfigured to 80 MHz operation
C. RRM is enabled and has dynamically picked a 20 MHz channel
D. The first 20 MHz is the AP's primary channel and higher airtime utilization on the primary channel is normal when an AP is configured for 80 MHz operation

Answer: A

Explanation:
Explanation
The most likely cause of higher airtime utilization on the first 20 MHz of the 80 MHz channel is non-Wi-Fi interference. Non-Wi-Fi interference can prevent an AP from using its full channel width, as it will degrade the signal quality and increase the noise floor on some parts of the channel. This will force the AP to fall back to a narrower channel width, such as 20 MHz or 40 MHz, to maintain communication with its clients. The waterfall plot can help identify non-Wi-Fi interference by showing spikes or bursts of RF energy on specific frequencies or sub-channels. The other options are not correct, as they do not explain why only the first 20 MHz of the channel has higher airtime utilization. References: [Wireless Analysis Professional Study Guide], Chapter 3: Spectrum Analysis, page 74-75

NEW QUESTION # 98
IEEE 802.11-2007 specifies two ERP protection mechanisms: RTS/CTS and CTS-to-Self.
Which statement is true regarding these two protection mechanisms? (Choose 2)

A. RTS and CTS frames are relayed through the access point, whereas the CTS-to-Self frames are not.
B. RTS and CTS frames use Short Interframe Spaces (SIFS), and CTS-to-Self frames use PCF Interframe Spaces (PIFS).
C. A CTS-to-Self frame sent by a client station may reach fewer nodes than the RTS/CTS frame exchange.
D. Aside from the Subtype subfield of the Frame Control field, the generic MAC header format of RTS and CTS frames are identical.
E. By definition, all associated client stations in a BSS can hear RTS, CTS, and CTS-to-Self frames, so RTS/CTS and CTS-to-Self mechanisms have equal effectiveness.
F. Use of RTS/CTS requires more overhead than CTS-to-Self due to a higher number of frames transmitted onto the wireless medium.

Answer: C,F

NEW QUESTION # 99
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?

A. The 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
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
C. The customer should replace all their Bluetooth wireless mice as they are stopping the users on floor 5 from connecting to the wireless network
D. The customers APs are misbehaving and a technical support case should be open with the vendor

Answer: B

Explanation:
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 below.

NEW QUESTION # 100
Why would a STA that supports 802.11k Radio Measurement send a Neighbor Request to an AP?

A. To request a list of neighboring STAs which enables the STA to better pick the right protection mechanisms
B. To learn about neighboring interference sources and tune its RF radio accordingly
C. To inform the current AP about the STA's intent to roam to a neighboring AP, ensuring a seamless handover
D. To request a list of neighboring APs which the STA can use as roaming candidates

Answer: D

Explanation:
A STA that supports 802.11k Radio Measurement would send a Neighbor Request to an AP to request a list of neighboring APs which the STA can use as roaming candidates. A Neighbor Request is an Action frame that contains a subelement specifying the type of information that the STA wants to receive from the AP. A Neighbor Report is an Action frame that contains a subelement with a list of neighboring APs that match the criteria specified in the Neighbor Request. The Neighbor Report provides information such as BSSID, channel, operating class, and PHY type of each neighboring AP. This information helps the STA to perform intelligent roaming decisions based on signal quality, load, and compatibility.

NEW QUESTION # 101
Which one of the following should be the first step when troubleshooting a WLAN issue?

A. Define the problem
B. Perform an initial WLAN scan and see if any obvious issues stand out
C. Identify capture locations
D. Identify probable causes

Answer: A

Explanation:
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 problem.

NEW QUESTION # 102
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