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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: MAC Sublayer and Functions | 25% | - MAC layer troubleshooting - MAC addressing and operations - MAC frame formats and types - QoS and power management |
| Topic 2: PHY Layers and Technologies | 10% | - Channelization and frequency usage - 802.11 physical layer standards - PHY layer troubleshooting - Modulation and coding schemes |
| Topic 3: Protocol Analysis | 15% | - Troubleshooting using protocol data - Analysis tools and methods - Protocol analysis fundamentals - Capture and decode process |
| Topic 4: 802.11 Frame Exchanges | 30% | - Data transfer and protection mechanisms - Frame exchange troubleshooting - Frame exchange sequences - Association and authentication processes |
| Topic 5: WLAN Medium Access | 10% | - Contention and coordination functions - Medium access performance analysis - CSMA/CA and medium access rules - Medium access related issues |
| Topic 6: Spectrum Analysis | 10% | - Troubleshooting RF issues - RF spectrum fundamentals - Interference detection and classification - Spectrum analysis tools |
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NEW QUESTION # 25
Which one of the these is the most important in the WLAN troubleshooting methodology among those listed?
Answer: A
Explanation:
Directly observing the problem is the most critical step because it allows the troubleshooter to validate symptoms firsthand, correlate user reports with actual behavior, and eliminate assumptions. Firsthand observation ensures that analysis is based on verified evidence rather than secondhand descriptions, forming a reliable foundation for accurate diagnosis.
NEW QUESTION # 26
Which common feature of a Spectrum Analyzer would be the best to help you locate a non-
802.11 interference source?
Answer: C
Explanation:
A device finder feature helps physically locate the source of non-802.11 interference by providing a directional or proximity-based indication of signal strength. As you move through the environment, the tool guides you toward the strongest RF energy source, making it the most effective feature for tracking down an interfering device.
NEW QUESTION # 27
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?
Answer: C
Explanation:
References:
NEW QUESTION # 28
You have deployed a new 802.11ac WLAN for a customer who wants to take advantage of
802.11ac standardized Transmit Beamforming. After the installation you perform a protocol capture to confirm Transmit Beamforming is operating as expected. When analyzing the protocol exchange you observe the beamformer transmits a VHT NDP Announcement frame but you never see the transmitted NDP. What do you conclude from this behavior?
Answer: B
Explanation:
Null Data Packets (NDPs) used in 802.11ac beamforming are PHY-layer constructs without MAC frames. Since protocol analyzers capture at the MAC layer, NDPs do not appear in the capture even though they are transmitted, which is why only the VHT NDP Announcement is visible.
NEW QUESTION # 29
Where, in a protocol analyzer, would you find an indication that a frame was transmitted as part of an A- MPDU?
Answer: B
Explanation:
In a protocol analyzer, you would find an indication that a frame was transmitted as part of an A-MPDU by looking at the Aggregation flag in the Radio Tap Header. The Radio Tap Header is a pseudo-header that is added by some wireless capture devices to provide additional information about the physical layer characteristics of a frame. The Aggregation flag is one of the fields in this header, and it indicates whether the frame belongs to an A-MPDU or not. If the flag is set to 1, it means that the frame is part of an A-MPDU; if it is set to 0, it means that the frame is not part of an A-MPDU . References: CWAP-405Certified Wireless Analysis Professional Study and Reference Guide, Chapter 9: PHY Layer Frame Formats and Technologies, page 303; CWAP-405Certified Wireless Analysis Professional Study and Reference Guide, Chapter 9: PHY Layer Frame Formats and Technologies, page 304.
NEW QUESTION # 30
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