CWNP cwap-402 Free Practice Questions

NEW QUESTION 1
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 2
During an initial install of a controller-based WLAN, the APs are not locating the WLAN controller. The controller is two router hops away from the nearest AP. DHCP is not used. When performing a packet trace, you see a DNS response code of 3 targeted at one of the APs.
What is the problem?

• A. The DNS server is not authoritative for the domain
• B. The router is not forwarding packets to the DNS server
• C. The controller host record has not been created in the DNS server
• D. The authentication to the DNS server failed

Answer: C

NEW QUESTION 3
You want to simplify viewing frames of a particular type in Wireshark. What is used to specify frames for colorization?

• A. Custom code must be written and the binaries recompiled
• B. Automated protocol analysis is used and no additional options may be specified
• C. Filters are used to define the frames that should be colorized
• D. A scripting language is available to modify the code before recompilation

Answer: C

Explanation:
Protocol analyzers also support highlighting or colorization and filtering. The highlighting feature allows you to define colors for packets or frames matching particular criteria. It allows those frames to stand out as you browse through the captured frames

NEW QUESTION 4
You are analyzing a problem with a specific client adapter. The vendor specifications sheet does not provide detailed information.
What tool can you use to provide the most detailed specification information in many such cases?

• A. WLAN controller
• B. Spectrum analyzer
• C. FCC ID Search
• D. Wi-Fi finder

Answer: C

NEW QUESTION 5
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 6
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 7
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 8
You are evaluating a protocol capture file in Wireshark. The following filter is applied: wlan_radio.11ac.bandwidth - - 4
What kind of frames are displayed?

• A. Only 40 MHz frames
• B. Only 80 MHz frames
• C. Only frames supporting 4 spatial streams
• D. Only frames supporting 4 radio chains

Answer: B

NEW QUESTION 9
You have captured 802.11 traffic using an adapter that includes the radio tap header. You see several frames often called announcement frames in the capture.
What best describes these types of frames?

• A. They only include beacon and probe request frames
• B. They are used to allow a STA to awake from sleep and for no other reason
• C. They only include beacon and probe response frames
• D. They are meant to provide information to the network that may result in state changes, but they are not open for rejection

Answer: C

NEW QUESTION 10
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 11
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 12
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 13
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 14
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 15
To what data rates can a 5 GHz PHY device shift when changers occur in the signal strength?

• A. 11, 5.5, 2, 1
• B. 24, 18, 12, 5.5
• C. 24, 18, 11, 2
• D. 24, 18, 12, 6

Answer: D

NEW QUESTION 16
What is the Extended IFS used in 802.11 contention?

• A. When the higher data rates are used and you want the fastest medium access times
• B. When the lower data rates are used and you want the fastest medium access times
• C. When 802.11ac must coexist with 802.11n
• D. When a frame reception begins but the received frame is incomplete or corrupted based on the FCS

Answer: C

NEW QUESTION 17
Several users have reported WLAN network connection issues and the users connect to the same AP. These users are spread throughout a 320 square meter area. Using a spectrum analyzer, you see RF energy across the entire 2.4 GHz band at significant signal strength levels. The users all connect using either HT or ERP devices.
What is the likely cause of this problem within this area?

• A. Wide-band jammer
• B. Microwave oven
• C. Bluetooth devices
• D. Video camera

Answer: A

NEW QUESTION 18
What is the formula used to calculate the Duration field value in an RTS frame?

• A. RTS Duration field = CTS duration
• B. RTS Duration field = Data or management to be sent frame duration
• C. RTS Duration field = Data or management frame to be sent duration + CTS duration + one ACK duration + three SIFS
• D. RTS Duration field = Data or management frame to be sent duration + CTS duration

Answer: C

NEW QUESTION 19
The manager in the security group is concerned about compliance with security policies on the WLAN. The budget is not available for a full WIPS SOLUTION. He has asked you to implement a process that will verify compliance.
What would you recommend in such a scenario?

• A. Use the built-in spectrum analyzer features of the APs to ensure that WPA2-Enterprise is implemented throughout the organization
• B. Simplify enable 802.11w, which will enforce management frame compliance
• C. Use a laptop-based protocol analyzer that provides compliance reporting to monitor the environment on a periodic basis
• D. Implement AP-based sensors throughout the facility and then monitor for performance issues with these sensors

Answer: C

NEW QUESTION 20
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 21
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