Latest Apr-2026 CWNP CWAP-405 Dumps Updated 120 Questions
PDF Download Free of CWAP-405 Valid Practice Test Questions
NEW QUESTION # 44
802.11k Neighbor Requests and Neighbor Reports are sent in what type of Management Frames?
- A. Action
- B. Reassociation Request and Reassociation Response
- C. RRM
- D. Beacon
Answer: A
Explanation:
802.11k Neighbor Requests and Neighbor Reports are sent in Action frames. An Action frame is a Management frame that is used to perform various operations or functions related to the operation or maintenance of a wireless network. An Action frame consists of a Category field that indicates the type of action being performed, and a variable-length Action Details field that contains specific information related to the action. For example, an Action frame with a Category field value of 5 indicates a Radio Measurement action, and the Action Details field may contain a Neighbor Request or a Neighbor Report subelement .
References: CWAP-405Certified Wireless Analysis Professional Study and Reference Guide, Chapter 6:
MAC Sublayer Frame Exchanges, page 207; CWAP-405Certified Wireless Analysis Professional Study and Reference Guide, Chapter 6: MAC Sublayer Frame Exchanges, page 208; CWAP-405Certified Wireless Analysis Professional Study and Reference Guide, Chapter 12: 802.11k/v/r/u/w/ai Amendments, page 434.
NEW QUESTION # 45
Which one of the following is required for Wi-Fi integration in laptop-based Spectrum Analyzer software in addition to the spectrum analysis adapter?
- A. SNMP read credentials to the WLAN controller or APs
- B. A directional antenna
- C. A firmware upgrade for the spectrum analysis adapter
- D. An 802.11 wireless adaptor
Answer: D
Explanation:
An 802.11 wireless adaptor is required for Wi-Fi integration in laptop-based spectrum analyzer software in addition to the spectrum analysis adapter. The spectrum analysis adapter is a hardware device that captures the RF signals in the wireless environment and sends them to the spectrum analyzer software for analysis and display. The 802.11 wireless adapter is a hardware device that connects the laptop to the wireless network and allows the spectrum analyzer software to correlate the RF data with the Wi-Fi data, such as SSID, channel, and BSSID. This enables the spectrum analyzer software to provide more context and insight into the spectrum activity and its impact on the Wi-Fi network. A firmware upgrade for the spectrum analysis adapter is not required for Wi-Fi integration, but it may be needed to fix bugs or add features to the device. A directional antenna is an antenna that focuses the RF energy in a specific direction and has a high gain and a narrow beamwidth. A directional antenna can be used with a spectrum analysis adapter to pinpoint the location or source of interference or noise in the wireless environment, but it is not required for Wi-Fi integration. SNMP read credentials to the WLAN controller or APs are not required for Wi-Fi integration, but they may be useful for obtaining additional information about the wireless network configuration and performance from the network devices.
References:
CWAP-405Study Guide, Chapter 4: Spectrum Analysis and Troubleshooting, page 123 CWAP-405Objectives, Section 4.2: Integrate Wi-Fi data with spectrum analysis data CWAP-405Study Guide, Chapter 4: Spectrum Analysis and Troubleshooting, page 131
NEW QUESTION # 46
You are responsible for troubleshooting and analysis of the WLAN in your organization that supports more than 700 client STAs. Forty APs are deployed and they are all dual-band APs and are controller-based. You must troubleshoot the wired side in some scenarios using a protocol analyzer.
Which one of the following problems would warrant wired-side analysis in most situations?
- A. High 802.11 retry rates
- B. DHCP problems
- C. WMM QoS issues
- D. High 802.11 CRC rates
Answer: C
NEW QUESTION # 47
What should the To DS and From DS flags be to set to in an Association Response frame?
- A. To DS - 0, From DS = 0
- B. To DS = 0, From DS = 1
- C. To DS = 1, From DS = 1
- D. To DS - 1, From DS = 0
Answer: B
Explanation:
The To DS and From DS flags should be set to 0 in an Association Response frame. An Association Response frame is a type of management frame that is transmitted by an AP to accept or reject an association request from a STA. The To DS (To Distribution System) and From DS (From Distribution System) flags are two bits in the Frame Control field of the MAC header that indicate whether a frame is destined for or originated from the DS (Distribution System), which is a system that connects multiple BSSs together. The To DS and From DS flags can have four possible combinations: 00, 01, 10, or 11. For an Association Response frame, which is sent from an AP to a STA within a BSS, both flags should be set to 0. References: [Wireless Analysis Professional Study Guide CWAP-405], Chapter 5: 802.11 MAC Sublayer, page 121-122
NEW QUESTION # 48
Which one of the these is the most important in the WLAN troubleshooting methodology among those listed?
- A. Talk to the end users about their experiences
- B. Interview the network manager about the issues being experienced
- C. Obtain detailed -knowledge of the wireless vendors debug and logging options
- D. Observe the problem
Answer: D
Explanation:
Observing the problem is the most important step in the WLAN troubleshooting methodology among those listed. This step involves capturing and analyzing the relevant data from the wireless network, such as packets, frames, spectrum, and performance metrics. Observing the problem helps to verify the existence and scope of the issue, identify the root cause and possible solutions, and validate the results of any actions taken. The other steps are also important, but they are not as critical as observing the problem12 References:
* CWAP-405Study Guide, Chapter 1: Troubleshooting Methodology, page 15
* CWAP-405Objectives, Section 1.2: Observe the problem
NEW QUESTION # 49
What interframe space would be expected between a CIS and a Data frame?
- A. DIFS
- B. SIFS
- C. AIFS
- D. PIFS
Answer: B
Explanation:
The interframe space that would be expected between a CTS (Clear to Send) and a Data frame is SIFS (Short Interframe Space). A SIFS is the shortest interframe space that is used for high-priority transmissions, such as ACKs (Acknowledgements), CTSs, or data frames that are part of a fragmentation or aggregation process. A SIFS is a fixed value that depends on the PHY type and channel width. A CTS and a Data frame are part of a virtual carrier sense mechanism called RTS/CTS (Request to Send/Clear to Send), which is used to avoid collisions and hidden node problems in wireless transmissions. When a STA (station) wants to send a data frame, it first sends an RTS frame to the intended receiver, indicating the duration of the transmission. The receiver then responds with a CTS frame, also indicating the duration of the transmission. The other STAs in the vicinity hear either the RTS or the CTS frame and update their NAV (Network Allocation Vector) timers accordingly, deferring their access to the medium until the transmission is over. The sender then sends the data frame after waiting for a SIFS, followed by an ACK frame from the receiver after another SIFS. The other options are not correct, as they are not used between a CTS and a Data frame. A PIFS (PCF Interframe Space) is used for medium access by the PCF (Point Coordination Function), which is an optional and rarely implemented polling-based mechanism that provides contention-free service for time-sensitive traffic. An AIFS (Arbitration Interframe Space) is used for medium access by different ACs (Access Categories), which are logical queues that correspond to different QoS (Quality of Service) levels for different types of traffic. An AIFS is a variable interframe space that depends on the AIFSN (Arbitration Interframe Space Number) value of each AC. A DIFS (Distributed Interframe Space) is used for medium access by the DCF (Distributed Coordination Function), which is the default and mandatory contention-based mechanism that provides best- effort service for normal traffic. References: [Wireless Analysis Professional Study Guide CWAP-405], Chapter 6: 802.11 Frame Exchanges, page 166-167; Chapter 7: QoS Analysis, page 194-195
NEW QUESTION # 50
You want to simplify viewing frames of a particular type in Wireshark.
What is used to specify frames for colorization?
- A. Custom code must be written and the binaries recompiled
- B. A scripting language is available to modify the code before recompilation
- C. Filters are used to define the frames that should be colorized
- D. Automated protocol analysis is used and no additional options may be specified
Answer: C
Explanation:
Protocol analyzers also support highlighting or colorization and filtering. The highlighting feature allows you to define colors for packets or frames matching particular criteria. It allows those frames to stand out as you browse through the captured frames
NEW QUESTION # 51
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. Non-Wi-Fi interference is preventing the APs 80 MHz operation
- C. RRM is enabled and has dynamically picked a 20 MHz channel
- D. 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
Answer: B
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 # 52
Which one of the following is not an 802.11 Management frame?
- A. Authentication
- B. Beacon
- C. Action
- D. PS-Poll
Answer: D
Explanation:
A PS-Poll (Power Save Poll) frame is not an 802.11 management frame. A PS-Poll frame is a type of control frame that is used by a STA in power save mode to request data frames from an AP. A STA in power save mode can conserve battery power by periodically sleeping and waking up. When a STA sleeps, it cannot receive any data frames from the AP, so it informs the AP of its power save status by setting a bit in its MAC header. The AP then buffers any data frames destined for the sleeping STA until it wakes up. When a STA wakes up, it sends a PS-Poll frame to the AP, indicating its association ID and requesting any buffered data frames. The AP then responds with one or more data frames, followed by an ACK or BA frame from the STA. The other options are not correct, as they are types of 802.11 management frames. An Action frame is used to perform various management actions, such as spectrum management, QoS management, radio measurement, etc. A Beacon frame is used to advertise the presence and capabilities of an AP or BSS. An Authentication frame is used to establish or terminate an authentication relationship between a STA and an AP. References: [Wireless Analysis Professional Study Guide CWAP-405], Chapter 6: 802.11 Frame Exchanges, page 169-170
NEW QUESTION # 53
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 an 802.1Q VLAN tag
- C. QoS Data frames include a DSCP control field
- D. QoS Data frames include a QoS information element
Answer: A
Explanation:
The difference between a Data frame and a QoS-Data frame is that QoS Data frames include a QoS control field. A Data frame is a type of data frame that is used to carry user data or upper layer protocol data between STAs and APs. A QoS Data frame is a type of data frame that is used to carry user data or upper layer protocol data between STAs and APs that support QoS (Quality of Service) features. QoS features allow different types of traffic to be prioritized and handled differently according to their QoS requirements, such as delay, jitter, throughput, etc. QoS Data frames include a QoS control field in their MAC header, which contains information such as traffic identifier (TID), queue size (TXOP), acknowledgment policy (ACK), etc., that are used for QoS purposes. The other options are not correct, as they do not describe the difference between Data and QoS Data frames. QoS Data frames do not include a DSCP (Differentiated Services Code Point) control field, which is part of the IP header in the network layer, not the MAC header in the data link layer. QoS Data frames do not include a QoS information element (IE), which is part of some management frames that indicate QoS capabilities or parameters, not data frames. QoS Data frames do not include an 802.1 Q VLAN tag, which is part of some Ethernet frames that indicate VLAN membership or priority, not wireless frames. References: [Wireless Analysis Professional Study Guide CWAP-405], Chapter 5: 802.11 MAC Sublayer, page 118-119
NEW QUESTION # 54
You are performing a multiple adapter channel aggregation capture to troubleshoot a VoIP roaming problem and would like to measure the roaming time from the last VoIP packet sent on the old AP's channel to the first VoIP packet sent on the new AP's channel. Which timing column in the packet view would measure this for you?
- A. Delta
- B. Absolute
- C. Roaming
- D. Relative
Answer: A
Explanation:
Delta is the timing column in the packet view that measures the time difference between two consecutive packets in a capture file. Delta can be used to measure the roaming time from the last VoIP packet sent on the old AP's channel to the first VoIP packet sent on the new AP's channel by selecting these two packets and looking at their delta values. The other timing columns are not suitable for this measurement because they do not show the time difference between two specific packets. Roaming is a column that shows whether a packet belongs to a roaming event or not. Relative is a column that shows the time elapsed since the beginning of the capture file. Absolute is a column that shows the date and time when a packet was captured5 References:
* CWAP-405Study Guide, Chapter 2: Protocol Analysis, page 57
* CWAP-405Objectives, Section 2.4: Analyze timing values
NEW QUESTION # 55
In a Spectrum Analyzer the Swept Spectrogram plot displays what information?
- A. Wi-Fi Device information
- B. The RF time domain
- C. Reductions in frame transmissions
- D. RF power present at a particular frequency over the course of time
Answer: D
Explanation:
The Swept Spectrogram plot is a spectrum analysis plot that shows the RF power present at a particular frequency over the course of time. It can help identify trends and patterns in the RF spectrum over a longer period of time. It can also show how the RF environment changes over time and how different sources of RF signals affect each other. The other options are not correct, as they describe different types of plots or information that are not related to the Swept Spectrogram plot. References: [Wireless Analysis Professional Study Guide], Chapter 3: Spectrum Analysis, page 72-73
NEW QUESTION # 56
Which common feature of a Spectrum Analyzer would be the best to help you locate a non-802.11 interference source?
- A. Min hold
- B. Device finder
- C. Max hold
- D. Location filter
Answer: B
Explanation:
The device finder is a common feature of a spectrum analyzer that helps locate a non-802.11 interference source. The device finder uses a directional antenna to measure the signal strength of a specific frequency or signal source. By pointing the antenna in different directions, the device finder can indicate the direction and distance of the interference source. The device finder can also filter out other signals that are not related to the interference source. The other options are not correct, as they do not help locate a non-802.11 interference source. Max hold and min hold are features that show the maximum and minimum RF power levels over time, respectively. Location filter is a feature that filters out signals that are not from a specific location or area. References: [Wireless Analysis Professional Study Guide CWAP-405], Chapter 3: Spectrum Analysis, page 77-78
NEW QUESTION # 57
You are creating a baseline configuration for a pool of 100 laptops related to Wi-Fi. The laptops have dual- band 802.11ac adapters. They are configured for aggressive roaming.
What additional setting might you configure to ensure they access the WLAN on the channels with the least interference assuming the enterprise WLAN is well-designed?
- A. Power management
- B. Band preference
- C. 802.11h
- D. USB speed
Answer: B
NEW QUESTION # 58
To what data rates can a 5 GHz PHY device shift when changers occur in the signal strength?
- A. 24, 18, 12, 5.5
- B. 24, 18, 11, 2
- C. 11, 5.5, 2, 1
- D. 24, 18, 12, 6
Answer: D
NEW QUESTION # 59
As the WLAN engineer in your organization, you must troubleshoot performance problems related to co- channel interference (CCI).
What is a good measurement of CCI impact in addition to the number of APs seen on a channel?
- A. Retries
- B. The frequency used
- C. Non-Wi-Fi device count
- D. Utilization
Answer: B
NEW QUESTION # 60
What is the function of the PHY layer?
- A. Convert PSDUs to PPDUs for transmissions and PPDUs to PSDUs for receptions
- B. Convert PPDUs to PSDUs for transmissions and PSDUs to PPDUs for receptions
- C. Convert MSDUs to PPDUs for transmissions and PPDUs to MSDUs for receptions
- D. Convert PPDUs to MSDUs for transmissions and MSDUs to PPDUs for receptions
Answer: A
Explanation:
The function of the PHY layer is to convert PSDUs to PPDUs for transmissions and PPDUs to PSDUs for receptions. A PSDU (PHY Service Data Unit) is the data unit that is passed from the MAC layer to the PHY layer for transmission, or from the PHY layer to the MAC layer for reception. 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 and a PHY header, which contains information such as modulation, coding, and data rate.
The PHY layer adds or removes the PHY header to or from the PSDU during the conversion process. References: [Wireless Analysis Professional Study Guide CWAP-405], Chapter 4: 802.11 Physical Layer, page 97-98
NEW QUESTION # 61
What is an AIFS?
- A. The shortest period of time a STA can sleep
- B. A form of aggregation performed at the PHY layer based on 802.lie UP values interpreted from DSCP values
- C. A variable Interframe Space introduced by 802.lie to help prioritize medium access for different Access Categories
- D. A medium access method introduced by 802.lln, but never implemented
Answer: C
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-405], Chapter 7:
QoS Analysis, page 194-195
NEW QUESTION # 62
You are evaluating a protocol capture file in Wireshark. The following filter is applied:
wlan_radio.11ac.bandwidth - - 4
What kind of frames are displayed?
- A. Only frames supporting 4 radio chains
- B. Only frames supporting 4 spatial streams
- C. Only 40 MHz frames
- D. Only 80 MHz frames
Answer: D
NEW QUESTION # 63
......
CWAP-405 Test Engine files, CWAP-405 Dumps PDF: https://www.updatedumps.com/CWNP/CWAP-405-updated-exam-dumps.html
Latest CWNP CWAP-405 PDF and Dumps (2026) Free Exam Questions Answers: https://drive.google.com/open?id=1YfPibhENMVqPWVjhlIwO3qjyNYSUGcBO