CWNP - Latest CWAP-405 - Certified Wireless Analysis Professional Latest Exam Cram

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CWNP CWAP-405 Exam Syllabus Topics:

Section	Weight	Objectives
Topic 1: Spectrum Analysis	10%	- RF spectrum fundamentals - Interference detection and classification - Spectrum analysis tools - Troubleshooting RF issues
Topic 2: 802.11 Frame Exchanges	30%	- Association and authentication processes - Frame exchange sequences - Frame exchange troubleshooting - Data transfer and protection mechanisms
Topic 3: MAC Sublayer and Functions	25%	- MAC frame formats and types - QoS and power management - MAC layer troubleshooting - MAC addressing and operations
Topic 4: Protocol Analysis	15%	- Capture and decode process - Analysis tools and methods - Protocol analysis fundamentals - Troubleshooting using protocol data
Topic 5: PHY Layers and Technologies	10%	- 802.11 physical layer standards - PHY layer troubleshooting - Modulation and coding schemes - Channelization and frequency usage
Topic 6: WLAN Medium Access	10%	- Contention and coordination functions - CSMA/CA and medium access rules - Medium access related issues - Medium access performance analysis

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CWNP Certified Wireless Analysis Professional Sample Questions (Q122-Q127):

NEW QUESTION # 122
Which statement best describes what you will see when looking at the radio tap header section in a frame decode?

A. Data rate at which the PHY header was received
B. Additional information about the received frame supplied by the driver or calculated by the analyzer.
C. A decode of the PHY header
D. The TX power of the transmitting STA

Answer: B

Explanation:
The radio tap header is added by the capturing device's driver and includes metadata such as channel frequency, signal strength, noise level, and data rate. It is not part of the transmitted frame itself but provides extra context for analysis.

NEW QUESTION # 123
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. 28 microseconds
C. 16 microseconds
D. 9 microseconds

Answer: C

NEW QUESTION # 124
Which Spectrum Analyzer plot visualizes the spectrum over time?

A. Real-Time FFT
B. Utilization
C. Duty Cycle
D. Waterfall

Answer: D

NEW QUESTION # 125
When using WMM Power Save (WMM-PS), a client requests buffered data frames by sending which type of frame?

A. WMM Poll
B. More Data
C. NDP announcement
D. Trigger

Answer: A

Explanation:
In WMM Power Save (WMM-PS), a client in power-save mode sends a WMM PS-Poll frame to the AP to request delivery of buffered frames for its traffic queues. This allows efficient power management while ensuring timely data delivery.

NEW QUESTION # 126
You are troubleshooting a client that is experiencing slow WLAN performance. As part of the troubleshooting activity, you start a packet capture on your laptop close to the client device. While analyzing the packets, you suspect that you have not captured all packets transmitted by the client. By analyzing the trace file, how can you confirm if you have missing packets?

A. The missing packets will be shown as CRC errored packets
B. Protocol Analyzers show the number of missing packets in their statistics view
C. Look for gaps in the sequence number in MAC headers.
D. Retransmission are an indication of missing packets

Answer: C

Explanation:
One way to confirm if you have missing packets in your packet capture is to look for gaps in the sequence number in MAC headers. The sequence number is a 12-bit field in the MAC header that is used to identify and order data frames within a traffic stream. The sequence number is incremented by one for each new data frame transmitted by a STA, except for retransmissions, fragments, and control frames. The sequence number can range from 0 to 4095, and then wraps around to 0. If you see a jump or a gap in the sequence number between two consecutive data frames from the same STA, it means that you have missed some packets in between. The other options are not correct, as they do not confirm if you have missing packets in your packet capture. CRC errored packets are packets that have been corrupted during transmission and have failed the error detection check. Protocol analyzers may show the number of CRC errored packets in their statistics view, but not the number of missing packets. Retransmissions are an indication of packet loss or collision, but not necessarily of missing packets in your capture. References: [Wireless Analysis Professional Study Guide CWAP-405], Chapter 5: 802.11 MAC Sublayer, page 114-115

NEW QUESTION # 127
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