Rebirth Cwap-402 Free Demo For Certified Wireless Analysis Professional Certification

NEW QUESTION 1
You are using a laptop-based protocol analyzer to scan all channels and determine the basic configuration of the WLAN Basic Service Set in your facility. You are scanning all channels. All configured with default settings.
What can you change to cause the scan to run faster while still APs are capturing beacon frames on all the channels?

• A. Configure the RBW to more than 120 kHz
• B. Configure the scan time for channels to 300-500 ms
• C. Configure the fragmentation threshold to 1500 bytes
• D. Configure the scan time for channels to <100 ms

Answer: A

NEW QUESTION 2
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 3
You have been asked to recommend a protocol analysis solution that uses open source software and works with the Linux platform. It must provide decoding of 802.11ac frames and minimal support for reporting and statistics.
What solution would you recommend?

• A. Wi-Fi Analyzer Pro
• B. OmniPeek
• C. Wireshark
• D. CommView for Wi-Fi

Answer: C

NEW QUESTION 4
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 5
ABC Company requires the ability to identify and quickly locate rogue devices. ABC has chosen an overlay WIPS solution with Wi-Fi sensors that use dipole antennas to perform this task. No other sensors are included. Use your knowledge of location tracking techniques to answer the question.
Which one of the following location methods is not available in the described system?

• A. GPS Positioning
• B. Time Difference of Arrival (TDoA)
• C. RF Fingerprinting
• D. Trilateration of RSSI measurements

Answer: C

NEW QUESTION 6
You are considering disabling the data rates of 1, 2, 5.5 and 11 in the 2.4 GHz band. What advantage might this provide to the networks operating in this band?

• A. The antennas will be able to zero in on the higher data rates better
• B. The range of the PHY preamble and header will be reduced
• C. Frames that must be transmitted at the lowest common data rate can be transmitted at higher data rates after the change
• D. The RF signals will not travel as far

Answer: C

NEW QUESTION 7
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 8
You are considering the performance of a BSS based on different PHY types used. In the BSS, one device must use ERP as it does not support HT in its 2.4 GHz band.
What is the duration of the interframe space for this ERP device for standard data frame transmissions?

• A. 10 microseconds
• B. 16 microseconds
• C. 28 microseconds
• D. 9 microseconds

Answer: B

NEW QUESTION 9
You are using a Wireless Aggregator utility to combine multiple packet captures. One capture exists for each of channels 1, 6 and 11.
What kind of troubleshooting are you likely performing with such a tool?

• A. Fast secure roaming problems.
• B. Narrowband DoS attack detection.
• C. Interference source location.
• D. Wireless adapter failure analysis.

Answer: C

NEW QUESTION 10
You are tasked with describing the various frames used in 802.11 communications.
What frame is used for spectrum management, fast BSS transition and some other actions taken within a BSA?

• A. BlockAck
• B. CTS
• C. PS Poll
• D. Action

Answer: D

NEW QUESTION 11
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 12
You require 802.11ac capture solution. You want to capture using native operating system tools if possible.
What operating system has built-in ability to capture 802.11ac frames assuming it is running on the appropriate laptop hardware?

• A. Windows 10
• B. Mac OS X
• C. Windows 7
• D. Windows 8.1

Answer: B

NEW QUESTION 13
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 14
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 15
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 16
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 17
You are troubleshooting VoIP WLAN issues. When performing a PING to a remote device that would be involved in a call link, you see that the time value averages 220 milliseconds.
How much extra delay beyond that recommend for VoIP links is in this link?

• A. There is not enough information because the PING command give round-trip-times
• B. There is 70 milliseconds more delay than recommended
• C. There is 80 milliseconds more delay than recommended
• D. There is no extra delay beyond that recommended, instead there is 80 milliseconds less

Answer: D

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 have received reports of performance problems in a BSS. One specific user is indicating that her downloads are taking a very long time compared to other users around her. You want to determine if the AP is sending frames multiple times to get through to the user’s computer.
Where should you monitor with the protocol analyzer to see retries from the AP in this scenario?

• A. Directly in the middle of the AP and client STA
• B. Very near the AP
• C. Capture from another AP in another BSS
• D. Very near the client STA

Answer: B

NEW QUESTION 20
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 21
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 22
......