CWAP-405 Prüfungs-Guide & CWAP-405 Fragen Und Antworten

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CWNP CWAP-405 Exam Syllabus Topics:

SectionWeightObjectives
802.11 Frame Formats and Technologies20%- 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
- 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
Spectrum Analysis Tools and Methodologies15%- Non-802.11 interference isolation and signature tracking
  • 1. Analyze duty cycle measurements to evaluate active airtime constraints
  • 2. Identify signatures of Bluetooth, microwave ovens, and analog video systems
- Spectrum analyzer configuration parameters and visualization layouts
  • 1. Configure sweeping rules, RBW controls, and span baselines
  • 2. Interpret real-time FFT graphs, waterfall logs, and persistence charts
Protocol Analysis Tools and Methodologies15%- Troubleshooting methodologies and capture safety
  • 1. Isolate protocol analyzer drop counts during heavy file transfers
  • 2. Apply disciplined network diagnostic isolation lifecycles
- WLAN analyzer architectures and placement configurations
  • 1. Analyze hardware timestamp methods to minimize processing delays
  • 2. Configure local and remote frame capture adapters
  • 3. Implement multi-channel packet aggregators
802.11 Operation and Frame Exchanges40%- Management sublayer protocols and connectivity lifecycles
  • 1. Analyze beaconing, multi-BSSID profiles, and probe exchange sequences
  • 2. Trace authentication, association, and multi-tier roaming handshakes
  • 3. Evaluate 802.11 power save operational states and timeline markers
- Control plane handshakes and transmission recovery operations
  • 1. Evaluate Block ACK session initialization and bitmap tracking loops
  • 2. Analyze RTS/CTS protection rules and standard ACK frame transmissions
- Security framework verification and encryption tracking
  • 1. Deconstruct WPA3, SAE, and 4-way handshake key exchanges
  • 2. Trace 802.1X/EAP authentication phase transitions
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

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CWAP-405 Fragen Und Antworten, CWAP-405 Exam Fragen

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CWNP Certified Wireless Analysis Professional CWAP-405 Prüfungsfragen mit Lösungen (Q82-Q87):

82. Frage
To effect Preauthentication, a STA's supplicant sends an IEEE 802.1X/EAPoL Start message.
How is the EAPoL Start message addressed?

Antwort: A


83. Frage
Which piece of information is not transmitted in an HT PPDU header?

Antwort: C

Begründung:
The HT PPDU header conveys transmission parameters such as the MCS index, which implies the number of spatial streams and modulation/coding scheme, as well as the length of the PPDU.
The channel number is not included in the PHY header because both transmitter and receiver are already operating on the same channel, and that information is determined by the radio configuration rather than signaled within the PPDU.


84. Frage
In what scenario is Open Authentication without encryption not allowed based on the 802.11 standard?

Antwort: B

Begründung:
Open Authentication without encryption is not allowed when operating a BSS in the 6 GHz band, according to the 802.11 standard. Open Authentication is a type of authentication method that does not require any credentials or security information from a STA (station) to join a BSS (Basic Service Set). Open Authentication can be used with or without encryption, depending on the configuration of the BSS and the STA. Encryption is a technique that scrambles the data frames using an algorithm and a key to prevent unauthorized access or eavesdropping. However, in the 6 GHz band, which is a newly available frequency band for WLANs, Open Authentication without encryption is prohibited by the 802.11 standard, as it poses security and interference risks for other users and services in the band. The 6 GHz band requires all WLANs to use WPA3-Personal or WPA3-Enterprise encryption methods, which are more secure and robust than previous encryption methods such as WPA2 or WEP. The other options are not correct, as they do not describe scenarios where Open Authentication without encryption is not allowed by the 802.11 standard.
When operating a BSS in the CBRS band, which is another newly available frequency band for WLANs, Open Authentication without encryption is allowed, but not recommended, as it also poses security and interference risks for other users and services in the band. When operating a BSS in FIPS mode, which is a mode that complies with the Federal Information Processing Standards for cryptographic security, Open Authentication without encryption is allowed, but not compliant, as it does not meet the FIPS requirements for encryption algorithms and keys. When operating a BSS in a government facility, Open Authentication without encryption is allowed, but not advisable, as it may violate the government policies or regulations for wireless security. References: [Wireless Analysis Professional Study Guide CWAP-405], Chapter 8: Security Analysis, page 220-221


85. Frage
As a wireless network consultant you have been called in to troubleshoot a high-priority issue for one of your customers. The customer's office is based on two floors within a multi-tenant office block. On one of these floors (floor 5) users cannot connect to the wireless network. During their own testing the customer has discovered that users can connect on floor 6 but not when they move to the floor 5. This issue is affecting all users on floor 5 and having a negative effect on productivity.
To troubleshoot this issue, you perform both Spectrum and Protocol Analysis. The Spectrum Analysis shows the presence of Bluetooth signals which you have identified as coming from wireless mice. In the protocol analyzer you see the top frame on the network is Deauthentication frames. On closer investigation you see that the Deauthentication frames' source addresses match the BSSIDs of your customers APs and the destination address is FF:FF:FF:FF:FF:FF:FF.
What do you conclude from this troubleshooting exercise?

Antwort: C

Begründung:
A high volume of Deauthentication frames sent to the broadcast destination address forces all nearby clients to disconnect and prevents new associations, which is a classic denial-of-service condition at the 802.11 management layer. Because the source addresses are spoofed to match the AP BSSIDs and the impact is localized to one floor, this strongly points to an external device/system transmitting forged deauthentication traffic in that area, commonly caused by a misconfigured wireless intrusion prevention system or similar containment feature operated by another tenant.


86. Frage
What action is taken automatically by 802.11 APs and client STAs as the signal strength of the link weakens in order to improve the quality of the RF communications overall?

Antwort: D


87. Frage
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