Practice Examples and Dumps & Tips for 2026 Latest CWAP-405 Valid Tests Dumps
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NEW QUESTION # 40
You are troubleshooting a connection problem with a client STA. Regardless of the AP to which it attempts to connect, the connection fails. Using a wired protocol analyzer, you determine that the problem is with the
802.1X/EAP authentication to the RADIUS server.
What layer or range of layers of the OSI model revealed this information?
- A. Above Layer 4
- B. Layer 2
- C. Layer 3
- D. Below Layer 3
Answer: C
NEW QUESTION # 41
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?
- A. This behavior is non-standard and is likely a bug with the current driver.
- B. This indicates the beamformer is misconfigured.
- C. This is normal, 802.11ac includes the NDP within the VHT NDP Announcement.
- D. NDPs are PHY PPDUs which contain no MPDU and therefore will not be displayed in a protocol analyzer.
Answer: D
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 # 42
The PHY layer provides framing by adding a header to create what type of data unit?
- A. MPDU
- B. PPDU
- C. MSDU
- D. PSDU
Answer: B
Explanation:
The PHY layer provides framing by adding a header to create a PPDU. A PPDU (PHY Protocol Data Unit) is the data unit that is transmitted or received over the wireless medium by the PHY layer. A PPDU consists of a PSDU (PHY Service Data Unit) and a PHY header, which contains information such as modulation, coding, and data rate. The PHY layer adds the PHY header to the PSDU to create a PPDU for transmission, or removes the PHY header from the PPDU to extract the PSDU for reception. The other options are not correct, as they are not created by adding a header at the PHY layer. An MPDU (MAC Protocol Data Unit) is created by adding a MAC header and FCS to an MSDU (MAC Service Data Unit) at the MAC layer. An MSDU is the data unit that is passed from the LLC sublayer to the MAC sublayer or vice versa. References: [Wireless Analysis Professional Study Guide CWAP-405], Chapter 4: 802.11 Physical Layer, page 97-98
NEW QUESTION # 43
When performing protocol analysis, you capture an 802.1 lac data frame on channel 52, transmitted at MCS 8.
At what data rate was the PHY Preamble transmitted?
- A. 6 Mbps
- B. 86.7 Mbps
- C. 54 Mbps
- D. 78 Mbps
Answer: A
Explanation:
The data rate at which the PHY preamble was transmitted is 6 Mbps. The PHY preamble is a part of the PPDU that is transmitted before the PHY header and the PSDU. The PHY preamble consists of a series of training fields that help the receiver to detect and synchronize with the signal. The PHY preamble is always transmitted at a fixed data rate that depends on the type of PPDU (e.g., OFDM, HT, VHT, HE). For an 802.1 lac data frame on channel 52, which uses VHT PPDUs, the data rate for the PHY preamble is 6 Mbps. This data rate does not depend on MCS (Modulation and Coding Scheme), which only affects the data rate for the PSDU. References: [Wireless Analysis Professional Study Guide CWAP-405], Chapter 4: 802.11 Physical Layer, page 99-100
NEW QUESTION # 44
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. Trilateration of RSSI measurements
- B. Time Difference of Arrival (TDoA)
- C. GPS Positioning
- D. RF Fingerprinting
Answer: D
NEW QUESTION # 45
You are working in an organization that has implemented an SCA-based WLAN. You want to change the RF channel for a single AP.
What can you do to perform this task with some SCA solutions?
- A. Access the AP through the console port and change the channel
- B. Convert the network to MCA
- C. Access the AP using SSH and change the channel
- D. Access the AP using Telnet and change the channel
Answer: B
NEW QUESTION # 46
In which element of a Beacon frame would you look to identity the current HT protection mode in which an AP is operating?
- A. HT Protection Element
- B. HT Operations Element
- C. ERP Information Element
- D. HT Capabilities Element
Answer: B
Explanation:
The current HT protection mode is indicated within the HT Operation element of the Beacon frame. This element contains operational parameters for the BSS, including the HT protection field that specifies how the AP is protecting HT transmissions in mixed environments.
NEW QUESTION # 47
When configuring a long-term, forensic packet capture and saving all packets to disk which of the following is not a consideration?
- A. Real-time packet decodes
- B. Total capture storage space
- C. Analyzer location
- D. Individual trace file size
Answer: A
Explanation:
Real-time packet decodes are not a consideration when configuring a long-term, forensic packet capture and saving all packets to disk. Real-time packet decodes are useful for live analysis and troubleshooting, but they consume CPU and memory resources that could affect the performance of the capture process. For a long- term, forensic packet capture, it is more important to consider the analyzer location, the total capture storage space, and the individual trace file size. These factors affect the quality and quantity of the captured packets and the ease of post-capture analysis34 References:
* CWAP-405Study Guide, Chapter 2: Protocol Analysis, page 49
* CWAP-405Objectives, Section 2.1: Configure protocol analyzers
NEW QUESTION # 48
What is the function of the PHY Preamble?
- A. To set the modulation method for the MPDU
- B. Allows the receiver to detect and synchronize with the signal
- C. Carries the NDP used in Transmit Beamforming and MU-MIMO
- D. To terminate a conversation between transmitter and receiver
Answer: B
Explanation:
The PHY preamble enables receivers to detect the presence of an incoming transmission and synchronize to it in time and frequency. It provides the necessary information for signal detection, automatic gain control adjustment, timing alignment, and channel estimation so that the receiver can correctly decode the remainder of the frame.
NEW QUESTION # 49
What is the difference between a Data frame and a QoS-Data frame?
- A. QoS Data frames include a QoS control field
- B. QoS Data frames include a QoS information element
- C. QoS Data frames include a DSCP control field
- D. QoS Data frames include an 802.1Q VLAN tag
Answer: A
Explanation:
QoS Data frames include an additional QoS Control field in the MAC header. This field carries traffic priority and related QoS parameters used for Enhanced Distributed Channel Access (EDCA), enabling differentiated handling of traffic categories such as voice, video, best effort, and background.
NEW QUESTION # 50
Given: The Frame Check Sequence (FCS) is a 32 CRC used for error detection.
The CRC is calculated over what?
- A. PHY Header, MAC Header and Frame Body
- B. PHY Header and Mac Header only
- C. Mac Header and Frame Body only
- D. Frame Body only
Answer: C
Explanation:
The Frame Check Sequence is calculated over the entire MAC frame, which includes the MAC header and the frame body. It does not include any PHY-layer fields because the FCS is part of the MAC frame and is generated before the PHY encapsulates the data into a PPDU for transmission.
NEW QUESTION # 51
What is the default 802.11 authentication method for a STA when using Pre-RSNA?
- A. Shared Key
- B. 4-Way Handshake
- C. PSK
- D. Open System
Answer: D
Explanation:
The default 802.11 authentication method for a STA when using Pre-RSNA is Open System. This is the simplest and most common authentication method, which does not provide any security or encryption. In Open System authentication, the STA sends an Authentication Request frame to the AP, and the AP responds with an Authentication Response frame with a status code of success. After this, the STA can proceed to association with the AP . References: CWAP-405Certified Wireless Analysis Professional Study and Reference Guide, Chapter 6: MAC Sublayer Frame Exchanges, page 181; CWAP-405Certified Wireless Analysis Professional Study and Reference Guide, Chapter 6: MAC Sublayer Frame Exchanges, page 183.
NEW QUESTION # 52
Laptop-based wireless spectrum analyzers provide a visual representation of RF signals in which domain?
- A. Protocol domain
- B. Frequency domain
- C. Transport domain
- D. Session domain
Answer: B
Explanation:
Laptop-based wireless spectrum analyzers display RF energy as a function of frequency, providing a visual representation in the frequency domain. This allows identification of interference sources and channel conditions.
NEW QUESTION # 53
When configuring a long-term, forensic packet capture and saving all packets to disk which of the following is not a consideration?
- A. Real-time packet decodes
- B. Total capture storage space
- C. Analyzer location
- D. Individual trace file size
Answer: A
Explanation:
In long-term forensic captures, the priority is reliably capturing and storing all packets without loss. Considerations such as total storage capacity, file size management, and analyzer placement directly affect data retention and capture integrity. Real-time packet decoding is not required because analysis can be performed later on the saved data, making it unnecessary during continuous forensic collection.
NEW QUESTION # 54
Which Spectrum Analyzer plot visualizes the spectrum over time?
- A. Real-Time FFT
- B. Duty Cycle
- C. Utilization
- D. Waterfall
Answer: D
NEW QUESTION # 55
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. Length
- B. Phase
- C. Time
- D. Frequency
Answer: B
NEW QUESTION # 56
Which one of the following is not an 802.11 Management frame?
- A. Beacon
- B. Authentication
- C. PS-Poll
- D. Action
Answer: C
Explanation:
PS-Poll is a control frame used by a station in power save mode to request buffered frames from the access point. It is not classified as a management frame, whereas Action, Authentication, and Beacon frames are all management frame subtypes.
NEW QUESTION # 57
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