Actual Cwap-402 Item Pool 2021

NEW QUESTION 1
You are creating a baseline configuration for a pool of 100 laptops related to Wi-Fi. The laptops have dual-band 802.11ac adapters. They are configured for aggressive roaming.
What additional setting might you configure to ensure they access the WLAN on the channels with the least interference assuming the enterprise WLAN is well-designed?

• A. Band preference
• B. USB speed
• C. 802.11h
• D. Power management

Answer: A

NEW QUESTION 2
You work as an SE for a value-added reseller. A client has an existing deployment of 802.11n Aps and wants to upgrade several BSSs to 802.11ac.
What hardware feature of some enterprise Aps may allow for this without a forklift upgrade?

• A. Adding an 802.11ac module to the existing APs
• B. Simply check the Enable 802.11ac checkbox in the web-based configuration interface
• C. Replace the antennas with 802.11ac antennas
• D. Converting the 802.11n radio to an 802.11ac radio through software

Answer: B

NEW QUESTION 3
When using Wireshark for protocol analysis, what filter will allow you to see only beacon frames?

• A. wlan.fc.type_subtype = =0x05
• B. wlan.fc.type_subtype = =0x0b
• C. wlan.fc.type_subtype = =0x08
• D. wlan.fc.type_subtype = =0x04

Answer: C

NEW QUESTION 4
What element was added to the general frame of 802.11 with the 802.11e amendment and the 802.11-2007 rollup?

• A. HT Control
• B. Address 4
• C. QoS Control
• D. RSN-IE

Answer: C

NEW QUESTION 5
You are concerned about attackers gaining access to your WLAN from outside the facility.
Why does reducing the output power on the APs not provide sufficient certainty that an attacker outside the facility cannot gain access?

• A. Because RF signals can be received even when weak if using a Mac OS X computer
• B. Because the attacker can simply use high gain antennas
• C. Because the attacker can increase the output power of the radio on the client
• D. Because the attacker will simplify use a lower gain antenna and a radio with higher receive sensitivity

Answer: B

NEW QUESTION 6
Recently, three rogue APs have been connected to the network and later discovered. You want to prevent future rogue AP installations as much as possible.
What is the first step to eliminating or reducing rogue APs on the network?

• A. Use IPSec between every AP and the network infrastructure
• B. Define a direct policy that stipulates the ramifications of installing unauthorized devices
• C. Create a hash of the MAC addresses of all authorized devices and continually scan for non-matching hashes
• D. Enable rogue detection in the existing authorized APs

Answer: D

NEW QUESTION 7
You are using the real-time FFT display of a spectrum analyzer.
In what domain does this show the RF energy detected in the swept frequencies?

• A. Time
• B. Length
• C. Phase
• D. Frequency

Answer: C

NEW QUESTION 8
You are concerned with management overhead in your WLAN. When evaluating the network, you note that each dual-band AP provides for 4 SSIDs in each band with three secure SSIDs and one Open System SSID. The network runs only 802.11ac APs and uses 20 MHz channels in 2.4 GHz and 400 MHz channels in 5 GHz.
What can you do to reduce the impact of beacon frames on CCI and channel utilization?

• A. Increase the beacon interval
• B. Use only 40 MHz channels
• C. Use the same security across all SSIDs
• D. Disable SSID broadcasting

Answer: D

NEW QUESTION 9
You are attempting to work through a user complaint with the CWNP-recommended troubleshooting methodology.
What must be clearly identified in order to reduce the number of possible causes at step three?

• A. The user name
• B. The problem
• C. The device type
• D. The user’s IP configuration

Answer: B

NEW QUESTION 10
When using a commercial WLAN protocol analyzer, you notice that it is listing vendor names for some APs and client STAs.
What is the source of this information?

• A. Broadcast name resolution
• B. Banner grabbing
• C. DNS name resolution
• D. Vendor OUI values

Answer: D

NEW QUESTION 11
VoIP is used heavily in your organization. You must troubleshoot problems with dropped calls on the WLAN.
What is a common cause of dropped calls when using Wi-Fi VoIP phones?

• A. Use of WMM
• B. Data rates below 54 Mbps
• C. Data rates below 75 Mbps
• D. Slow roaming

Answer: D

NEW QUESTION 12
You are responsible for troubleshooting and analysis of the WLAN in your organization that supports more than 700 client STAs. Forty APs are deployed and they are all dual-band APs and are controller-based. You must troubleshoot the wired side in some scenarios using a protocol analyzer.
Which one of the following problems would warrant wired-side analysis in most situations?

• A. High 802.11 retry rates
• B. High 802.11 CRC rates
• C. WMM QoS issues
• D. DHCP problems

Answer: C

NEW QUESTION 13
As the WLAN administrator in your organization you are responsible for troubleshooting connection issues. Several STAs are connecting to the network, but are unable to communicate after connection. You suspect a DHCP problem. After capturing traffic on the wired-side of the AP, you want to view only DHCP traffic.
What filter in Wireshark can be used for this purpose?

• A. DHCPv6
• B. DHCP
• C. BOOTP
• D. DHCPv4

Answer: C

NEW QUESTION 14
You suspect an interfere may exist in a BSS that is experiencing sporadic problems. You want to identify and locate the device. The actual device identify is not known.
What tool should be used for this purpose?

• A. Spectrum analyzer
• B. Cable tester
• C. Throughput tester
• D. Protocol analyzer

Answer: A

NEW QUESTION 15
You have been recently hired as the wireless network administrator for an organization spread across seven locations. They have deployed more than 100 APs, but they have not been managed in either an automated or manual process for more than 18 months.
Given this length of time, what is one of the first things you should evaluate from a support perspective?

• A. The data rates allowed
• B. The VLANs in use
• C. The channels in use
• D. The firmware revision

Answer: D

NEW QUESTION 16
You have implemented centralized, infrastructure-based spectrum analysis. The Aps are configured to perform spectrum analysis in an ad-hoc manner and will go offline as Aps to perform this duty when needed.
What unique method of spectrum analysis monitoring is provided by this solution that is not typically available in a laptop-based analyzer?

• A. Web-based viewing
• B. Real-time FFT
• C. Band selection
• D. RBW adjustments

Answer: D

NEW QUESTION 17
The data rate for a data frame is 150 Mbps in 5 GHz. What rate is used to transmit the PHY header information?

• A. 1 Mbps
• B. 150 Mbps
• C. 75 Mbps
• D. 6 Mbps

Answer: A

NEW QUESTION 18
As the WLAN engineer in your organization, you must troubleshoot performance problems related to co-channel interference (CCI).
What is a good measurement of CCI impact in addition to the number of APs seen on a channel?

• A. The frequency used
• B. Non-Wi-Fi device count
• C. Retries
• D. Utilization

Answer: A

NEW QUESTION 19
You are attempting to determine timing information within a packet capture of a WLAN protocol analyzer.
What time is used to display the time the packet was captured based on the system clock in the computer?

• A. Relative
• B. Arrival
• C. Interframe
• D. Delta

Answer: B

Explanation:
Arrival Time—This is the time that is assigned to a packet after it is processed by the host system. This timestamp is dependent upon the system clock of the computer, and designates when the packet was captured.

NEW QUESTION 20
The To DS bit is set to 0 and the From DS is set to 1. What best describes this 802.11 frame?

• A. A frame being transmitted from an AP to a client STA
• B. A frame being transmitted in a mesh BSS
• C. A frame being transmitted from a client STA to an AP
• D. A frame being transmitted directly from one client STA to another

Answer: A

NEW QUESTION 21
You must report on frame types seen on the WLAN. You want to list the frame types by both name and binary value.
What frame type is represented by the binary value 011010, which includes the Type and Subtype values?

• A. Beacon
• B. PS-Poll
• C. Authentication
• D. Association Request

Answer: B

NEW QUESTION 22
You have been asked to recommend a solution for protocol capture of 802.11 frames consisting of 3x3:3 802.11ac communications. The requirement specifies that you gain a general view of a coverage area and does not require that you capture from specific user locations. The solution must be the least expensive practical solution possible that does not disrupt user access to the WLAN and it must be based on enterprise WLAN hardware.
What solution would you recommend so that any coverage area could be monitored on demand?

• A. Install laptop-based protocol analyzer near each AP
• B. Install Wireshark on the Aps natively to allow dynamic capture while serving clients
• C. Install the minimum number of Aps required for coverage and use these Aps for protocol analysis as needed
• D. Install sufficient Aps so that an AP can be taken offline to perform protocol analysis as needed

Answer: B

NEW QUESTION 23
HOTSPOT
A manager at a retail outlet has complained that an incident occurred allowing a STA to launch an attack against another STA connected to their public Wi-Fi hotspot. He has asked you to troubleshoot the situation and verify that all possible measured are being taken to prevent this.
What configuration should you check in the AP?
[MISSING]

• A. Mastered
• B. Not Mastered

Answer: A

NEW QUESTION 24
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?

• 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

NEW QUESTION 25
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