Sep 30, 2025 Updated CWAP-404 Dumps Questions For CWNP Exam
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NEW QUESTION # 98
The network administrator at ABC Engineering has taken a large packet capture from one of their APs running in monitor mode. She has very little knowledge of 802.11 protocols but would like to use the capture file to evaluate the overall health and performance of their wireless network. When she asks your advice, which tool do you recommend she opens the packet capture file with?
- A. Capture visualization tool
- B. WLAN scanner
- C. Spectrum analyzer
- D. Python
Answer: A
Explanation:
Explanation
A capture visualization tool is a software application that can open a packet capture file and display various graphs, charts, tables, and statistics that illustrate the characteristics and behavior of the wireless network. A capture visualization tool can help a network administrator with little knowledge of 802.11 protocols to evaluate the overall health and performance of their wireless network by providing a visual and intuitive representation of the captured data. A spectrum analyzer is a hardware device that measures the radio frequency signals in a given frequency range and displays their amplitude, frequency, and modulation. A spectrum analyzer can help identify sources of interference and noise in the wireless environment, but it cannot open a packet capture file. Python is a programming language that can be used to write scripts or applications that manipulate or analyze packet capture files, but it requires coding skills and knowledge of
802.11 protocols. A WLAN scanner is a software application that scans for available wireless networks and displays information such as SSID, BSSID, channel, signal strength, security type, and vendor. A WLAN scanner can help discover wireless networks and their basic parameters, but it cannot open a packet capture file345 References:
CWAP-404 Study Guide, Chapter 2: Protocol Analysis, page 63
CWAP-404 Objectives, Section 2.5: Use capture visualization tools
CWAP-404 Study Guide, Chapter 4: Spectrum Analysis and Troubleshooting, page 117 CWAP-404 Objectives, Section 4.1: Use spectrum analysis tools CWAP-404 Study Guide, Chapter 2: Protocol Analysis, page 33 CWAP-404 Objectives, Section 2.2: Analyze field values
NEW QUESTION # 99
What is an AIFS?
- A. A variable Interframe Space introduced by 802.lie to help prioritize medium access for different Access Categories
- B. A form of aggregation performed at the PHY layer based on 802.lie UP values interpreted from DSCP values
- C. The shortest period of time a STA can sleep
- D. A medium access method introduced by 802.lln, but never implemented
Answer: A
Explanation:
Explanation
An AIFS is a variable interframe space introduced by 802.11e to help prioritize medium access for different Access Categories (ACs). An interframe space is a period of time that a STA (station) has to wait before attempting to access the medium. An AIFS is a type of interframe space that varies depending on the AC of the traffic. An AC is a logical queue that corresponds to a QoS (Quality of Service) level for different types of traffic. There are four ACs defined by 802.11e: AC_VO (Voice), AC_VI (Video), AC_BE (Best Effort), and AC_BK (Background). Each AC has a different AIFSN (Arbitration Interframe Space Number) value, which determines how long it has to wait before attempting to access the medium. A lower AIFSN value means a higher priority and a shorter waiting time. The other options are not correct, as they do not describe what an AIFS is. An AIFS is not a medium access method introduced by 802.11n, but never implemented, as it is part of the 802.11e standard and widely used in QoS-enabled WLANs. An AIFS is not a form of aggregation performed at the PHY layer based on 802.11e UP values interpreted from DSCP values, as aggregation is a technique that combines multiple frames into one larger frame to improve efficiency and throughput, not prioritization or medium access. An AIFS is not the shortest period of time a STA can sleep, as sleeping is a power saving mode that allows a STA to conserve battery power by periodically turning off its radio, not accessing the medium. References: [Wireless Analysis Professional Study Guide CWAP-404], Chapter 7: QoS Analysis, page 194-195
NEW QUESTION # 100
How many frames make up the Group Key Handshake excluding any Ack frames that may be required?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: A
Explanation:
Explanation
The Group Key Handshake consists of two frames excluding any Ack frames that may be required. The Group Key Handshake is used to distribute and update the Group Temporal Key (GTK) for encrypting broadcast and multicast traffic. The AP initiates the Group Key Handshake by sending a Group Key Message 1 frame to a STA, which contains the new GTK and other information. The STA responds with a Group Key Message 2 frame to the AP, which confirms the receipt of the GTK and other information. After this, both the AP and the STA can use the new GTK for encryption and decryption of broadcast and multicast traffic . References:
CWAP-404 Certified Wireless Analysis Professional Study and Reference Guide, Chapter 7: 802.11 Security, page 246; CWAP-404 Certified Wireless Analysis Professional Study and Reference Guide, Chapter 7: 802.11 Security, page 247.
NEW QUESTION # 101
What is the Extended IFS used in 802.11 contention?
- A. When a frame reception begins but the received frame is incomplete or corrupted based on the FCS
- B. When 802.11ac must coexist with 802.11n
- C. When the higher data rates are used and you want the fastest medium access times
- D. When the lower data rates are used and you want the fastest medium access times
Answer: B
NEW QUESTION # 102
During a VHT Transmit Beamforming sounding exchange, the beamformee transmits a Compressed Beamforming frame to the beamformer. What is communicated within this Compressed Beamforming frame?
- A. Feedback Matrix
- B. Steering Matrix
- C. Beamformee Matrix
- D. Beamforming Matrix
Answer: A
Explanation:
The beamformee transmits a Feedback Matrix within the Compressed Beamforming frame to the beamformer. The Feedback Matrix contains information about the channel state between the beamformee and each spatial stream of the beamformer. This information is used by the beamformer to adjust its transmit weights and optimize its signal for the beamformee.
NEW QUESTION # 103
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. Frequency
- C. Time
- D. Phase
Answer: D
NEW QUESTION # 104
You have captured 802.11 traffic using an adapter that includes the radio tap header. You see several frames often called announcement frames in the capture.
What best describes these types of frames?
- A. They only include beacon and probe response frames
- B. They are meant to provide information to the network that may result in state changes, but they are not open for rejection
- C. They only include beacon and probe request frames
- D. They are used to allow a STA to awake from sleep and for no other reason
Answer: A
NEW QUESTION # 105
A new firmware has been released for the AP model you use in your WLAN.
You have more than 120 of these APs installed.
What is a good reason for applying a firmware update on an enterprise AP?
- A. Disable lower data rates
- B. Enable 4x4:4 spatial streams on a 3x3:3 AP
- C. Enable the short guard interval
- D. Enable new security features and patch vulnerabilities
Answer: D
NEW QUESTION # 106
iPerf is a tool used in what category of testing?
- A. Throughput
- B. Configuration
- C. Name resolution
- D. Connection
Answer: A
NEW QUESTION # 107
You have installed a new 802.1 lac WLAN configured with 80 MHz channels. Users in one area are complaining about poor performance. This area is currently served by a single AP. You take a spectrum analysis capture in the poor performing area. While examining the waterfall plot you notice the airtime utilization is higher on the first 20 MHz of the 80 MHz channel when compared to the rest of the channel.
What do you conclude?
- A. The AP is misconfigured and needs to be reconfigured to 80 MHz operation
- B. The first 20 MHz is the AP's primary channel and higher airtime utilization on the primary channel is normal when an AP is configured for 80 MHz operation
- C. Non-Wi-Fi interference is preventing the APs 80 MHz operation
- D. RRM is enabled and has dynamically picked a 20 MHz channel
Answer: C
Explanation:
Explanation
The most likely cause of higher airtime utilization on the first 20 MHz of the 80 MHz channel is non-Wi-Fi interference. Non-Wi-Fi interference can prevent an AP from using its full channel width, as it will degrade the signal quality and increase the noise floor on some parts of the channel. This will force the AP to fall back to a narrower channel width, such as 20 MHz or 40 MHz, to maintain communication with its clients. The waterfall plot can help identify non-Wi-Fi interference by showing spikes or bursts of RF energy on specific frequencies or sub-channels. The other options are not correct, as they do not explain why only the first 20 MHz of the channel has higher airtime utilization. References: [Wireless Analysis Professional Study Guide], Chapter 3: Spectrum Analysis, page 74-75
NEW QUESTION # 108
Which one of the following statements describes the function of WMM Admission Control?
- A. APs guarantee Voice and Video access categories priority over the WLAN medium
- B. Provides a new 802.11 Authentication method for Voice devices
- C. APs regulate the available bandwidth in an attempt to provide a guarantee of the amount of time that a STA has available to access the channel
- D. APs control access to the wireless medium by polling STAs for data packets
Answer: A
NEW QUESTION # 109
Given a protocol analyzer can decrypt WPA2-PSK data packets providing the PSK and SSID are configured in the analyzer software.
When performing packet capture (in a non-FT environment) which frames are required in order for PSK frame decryption to be possible?
- A. 4-Way Handshake
- B. Probe Response
- C. Reassociation
- D. Authentication
Answer: A
Explanation:
The 4-way handshake is the process that establishes the pairwise transient key (PTK) between the client and the AP in WPA2-PSK. The PTK is derived from the PSK, the SSID, and some random numbers exchanged in the handshake frames. The PTK is used to encrypt and decrypt the data frames between the client and the AP. Therefore, in order to decrypt WPA2-PSK data packets, a protocol analyzer needs to capture the 4-way handshake frames and have the PSK and SSID configured in the analyzer software.
NEW QUESTION # 110
You are explaining capacity planning to another engineer assisting you on a WLAN implementation project.
As part of the explanation, you provide the following formula:
C = B * log2(1 + S/N).
What does this formula define?
- A. Maximum signal strength of a channel
- B. Bandwidth capabilities of a channel
- C. The WEP encryption algorithm
- D. Minimum signal strength for a data rate
Answer: B
NEW QUESTION # 111
After examining a Beacon frame decode you see the SSID Element has a length of 0. What do you conclude about this frame?
- A. The frame is corrupted
- B. This is a common attack on WISP backend SQL databases
- C. SSID elements always have a length of 0
- D. The beacon is from a BSS configured to hide the SSID
Answer: D
Explanation:
If the SSID element has a length of 0 in a Beacon frame decode, it means that the beacon is from a BSS configured to hide the SSID. The SSID element is a part of the Beacon frame that contains the name or identifier of the BSS. The SSID element has two fields: length and value. The length field indicates how many bytes are used for the value field, which contains the actual SSID string.
If the length field is 0, it means that there is no value field or SSID string in the element. This is a common technique used by some APs to hide their SSID from passive scanning clients or potential attackers. However, this technique does not provide much security, as there are other ways to discover or reveal the hidden SSID, such as active scanning or capturing probe response or association frames.
NEW QUESTION # 112
When a client station operating under EDCA sends an RTS frame and NAV protection is desired for only the first or sole frame in the TXOP, the duration field will contain an amount of time, measured in microseconds, equal to which of the following?
- A. 1 RTS, 2 ACK, 1 DATA, 4 SIFS
- B. 1 CTS, 2 ACK, 1 DATA, 2 SIFS
- C. 1 CTS, 1 ACK, 1 DATA, 3 SIFS
- D. The entire duration of the TXOP
- E. 1 RTS, 1 CTS, 2 ACK , 1 DATA, 4 SIFS
- F. 1 RTS, 1 ACK, 1 DATA, 2 SIFS, 1 DIFS
Answer: C
NEW QUESTION # 113
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