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CWNP CWAP-405 Exam Syllabus Topics:

SectionWeightObjectives
Topic 1: WLAN Medium Access10%- Contention algorithms and wireless scheduling parameters
  • 1. Evaluate EDCA parameters, access categories, and TXOP duration limits
  • 2. Analyze DCF mechanics, carrier sensing, and backoff timers
Topic 2: Spectrum Analysis Tools and Methodologies15%- Non-802.11 interference isolation and signature tracking
  • 1. Identify signatures of Bluetooth, microwave ovens, and analog video systems
  • 2. Analyze duty cycle measurements to evaluate active airtime constraints
- Spectrum analyzer configuration parameters and visualization layouts
  • 1. Interpret real-time FFT graphs, waterfall logs, and persistence charts
  • 2. Configure sweeping rules, RBW controls, and span baselines
Topic 3: 802.11 Operation and Frame Exchanges40%- Security framework verification and encryption tracking
  • 1. Deconstruct WPA3, SAE, and 4-way handshake key exchanges
  • 2. Trace 802.1X/EAP authentication phase transitions
- Management sublayer protocols and connectivity lifecycles
  • 1. Trace authentication, association, and multi-tier roaming handshakes
  • 2. Analyze beaconing, multi-BSSID profiles, and probe exchange sequences
  • 3. Evaluate 802.11 power save operational states and timeline markers
- Control plane handshakes and transmission recovery operations
  • 1. Analyze RTS/CTS protection rules and standard ACK frame transmissions
  • 2. Evaluate Block ACK session initialization and bitmap tracking loops
Topic 4: Protocol Analysis Tools and Methodologies15%- WLAN analyzer architectures and placement configurations
  • 1. Configure local and remote frame capture adapters
  • 2. Implement multi-channel packet aggregators
  • 3. Analyze hardware timestamp methods to minimize processing delays
- Troubleshooting methodologies and capture safety
  • 1. Isolate protocol analyzer drop counts during heavy file transfers
  • 2. Apply disciplined network diagnostic isolation lifecycles
Topic 5: 802.11 Frame Formats and Technologies20%- MAC sublayer encapsulation and frame structural components
  • 1. Deconstruct MAC header fields, duration IDs, and sequence controls
  • 2. Evaluate A-MPDU and A-MSDU frame aggregation structures
- Physical Layer (PHY) header mechanics and encoding structures
  • 1. Analyze PHY metrics including HE, EHT, and VHT configuration nodes
  • 2. Decode training fields, signal fields, and preamble formats

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CWNP Certified Wireless Analysis Professional Sample Questions (Q19-Q24):

NEW QUESTION # 19
A PHY Header is added to the PSDU at which layer?

Answer: B

Explanation:
A PHY header is added to the PSDU at the PHY layer. A PHY header is a part of the PPDU that contains information such as modulation, coding, and data rate. The PHY header is added by the PHY layer when it converts a PSDU to a PPDU for transmission, or removed by the PHY layer when it converts a PPDU to a PSDU for reception. The other layers do not add or remove a PHY header. References: [Wireless Analysis Professional Study Guide CWAP-405], Chapter 4: 802.11 Physical Layer, page 97-98


NEW QUESTION # 20
When a data frame is encrypted with WPA2, to which portion of the frame is the encryption applied?

Answer: B

Explanation:
With WPA2 encryption, the protected portion of the frame is the frame body, which includes the LLC PDU. The MAC header remains unencrypted so that intermediate devices and receivers can process addressing and control information, while the payload (including the LLC header and upper-layer data) is encrypted to ensure confidentiality.


NEW QUESTION # 21
Which one of the following is required for Wi-Fi integration in laptop-based Spectrum Analyzer software in addition to the spectrum analysis adapter?

Answer: C

Explanation:
Wi-Fi integration in laptop-based spectrum analyzer software requires an 802.11 wireless adapter so that RF spectrum data can be correlated with Wi-Fi frame information. The spectrum adapter analyzes RF energy, while the 802.11 adapter provides MAC-layer details such as SSIDs, channels, and device activity, enabling combined RF and protocol visibility.


NEW QUESTION # 22
Using a portable analyzer you perform a packet capture next to a client STA and you can see that the STA is associated to a BSS. You observe the STA sending packets to the AP and the AP sending packets to the STA. Less than 2% of all packets are retransmissions. You move to capture packets by the AP and, while the retry rate is still less than 2%, you now only see unidirectional traffic from the AP to the client. How do you explain this behavior?

Answer: D

Explanation:
When capturing near the client, both uplink and downlink traffic are visible, confirming that communication between the client and AP is functioning properly. After moving near the AP, only downlink frames are visible while the retry rate remains low, indicating the AP is successfully receiving client frames. This behavior suggests the portable analyzer lacks sufficient receive sensitivity to detect the weaker client transmissions at that location, even though the AP, with better receiver sensitivity, can decode them successfully.


NEW QUESTION # 23
Which one of the following statements is not true concerning DTIMs?

Answer: D

Explanation:
Every Beacon frame must contain a DTIM is not a true statement concerning DTIMs. DTIM stands for Delivery Traffic Indication Message, and it is a subfield within the TIM (Traffic Indication Map) element in a Beacon frame. The DTIM indicates how many Beacon frames (including the current one) will appear before the next DTIM. For example, if the DTIM interval is set to 3, it means that every third Beacon frame will contain a DTIM. Buffered broadcast and multicast traffic will be transmitted following a DTIM, so that STAs in power save mode can wake up and receive them. The DTIM interval can also dictate when an STA will wake up to listen to Beacon frames, as some STAs may choose to only listen to Beacon frames that contain a DTIM . References: CWAP-405Certified Wireless Analysis Professional Study and Reference Guide, Chapter
6: MAC Sublayer Frame Exchanges, page 200; CWAP-405Certified Wireless Analysis Professional Study and Reference Guide, Chapter 6: MAC Sublayer Frame Exchanges, page 201.


NEW QUESTION # 24
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