CWAP-404 Exam Info and Free Practice Test All-in-One Exam Guide Nov-2025
Pass CWNP CWAP-404 Actual Free Exam Q&As Updated Dump Nov 29, 2025
CWNP CWAP-404 Exam Syllabus Topics:
| Topic | Details |
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CWNP CWAP-404 Exam Certification Details:
| Passing Score | 70% |
| Exam Registration | PEARSON VUE |
| Sample Questions | CWNP CWAP-404 Sample Questions |
| Exam Price | $275 USD |
| Duration | 90 minutes |
| Recommended Training | CWAP self-paced training kit, Training Class |
| Number of Questions | 60 |
NEW QUESTION # 62
Which parameters accurately describe the Beacon Interval field in the Beacon frame? (Choose 2)
- A. Value can range from 0 to 2007
- B. Indicates the desired time interval between TBTTs
- C. 4-octet length
- D. Indicates the exact time interval between Beacon transmissions
- E. easured in time units of 1024 µs
Answer: B,E
NEW QUESTION # 63
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 BSSISs of your customers APs and the destination address is FF:FF:FF:FF:FF:FF:FF. What do you conclude from this troubleshooting exercise?
- A. The users on floor 5 are being subjected to a denial of service attack, as this is happening across the entire floor it is likely to be a misconfigured WIPS solution belonging to the tenants on the floor below
- B. The customers APs are misbehaving and a technical support case should be open with the vendor
- C. The customer should replace all their Bluetooth wireless mice as they are stopping the users on floor 5 from connecting to the wireless network
- D. The CCI from the APs on the floor 4 is the problem and you need to ask the tenant below to turn down their AP's Tx power
Answer: A
Explanation:
The users on floor 5 are being subjected to a denial of service attack, as this is happening across the entire floor it is likely to be a misconfigured WIPS solution belonging to the tenants on the floor below. This is because the Deauthentication frames have a source address that matches the BSSIDs of the customer's APs and a destination address that is a broadcast address (FF:FF:FF:FF:FF:FF). This indicates that someone is sending spoofed Deauthentication frames to all STAs associated with the customer's APs, causing them to disconnect from the wireless network. This is a common type of DoS attack on wireless networks, and it could be caused by a rogue device or a WIPS solution that is configured to protect the wireless network of another tenant on the floor below.
NEW QUESTION # 64
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 spatial streams
- B. Only frames supporting 4 radio chains
- C. Only 40 MHz frames
- D. Only 80 MHz frames
Answer: D
Explanation:
https://www.cwnp.com/forums/posts?wlan_radio.11ac.bandwidth-definition-124380
NEW QUESTION # 65
What does the value of the Listen Interval field in an Association request frame indicate?
- A. How long a STA performing active scanning will listen for Probe Responses before changing channels
- B. How long a STA waits for an Ack before retransmitting the frame
- C. How often a STA will go off channel to look for other BSSs
- D. How often a STA in power save mode wakes up to listen to Beacon frames
Answer: D
Explanation:
The value of the Listen Interval field in an Association Request frame indicates how often a STA in power save mode wakes up to listen to Beacon frames. The Listen Interval is expressed in units of Beacon Intervals (typically 100 TU or 102.4 ms). For example, if the Listen Interval is set to 10, it means that the STA will wake up every 10 Beacon Intervals (or about 1 second) to check for buffered frames at the AP. The Listen Interval is used by the AP to determine how long it can hold frames for a STA in power save mode before discarding them.
NEW QUESTION # 66
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. Roaming
- B. Relative
- C. Absolute
- D. Delta
Answer: D
Explanation:
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-404 Study Guide, Chapter 2: Protocol Analysis, page 57
CWAP-404 Objectives, Section 2.4: Analyze timing values
NEW QUESTION # 67
A PHY Header is added to the PSDU at which sub-layer?
- A. PHY
- B. MAC
- C. Network
- D. LLC
Answer: A
NEW QUESTION # 68
You are repairing a misconfiguration in WMM settings on an AP.
The aCWmin and aCWmax values were all changed.
What is the default aCWmax for AC_BK?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: C
NEW QUESTION # 69
Which statements accurately describe IEEE 802.11 EDCA collision handling in a WMM-compliant infrastructure WLAN? (Choose 2)
- A. When frames collide within a QoS STA, data frames from lower priority ACs behave (as it relates to contention) as if there were an external collision on the wireless medium.
- B. Collisions between contending EDCAFs within a QoS STA are resolved within the QoS STA
- C. The WMM specification requires use of RTS/CTS as part of the EDCAF within each QoS STA to avoid internal collisions between ACs.
- D. When a frame transmission on the wireless medium fails, the transmitter may not transmit another frame from any AC or to any destination until the frame experiencing a failure is successfully transmitted or the max retry count for that frame is reached.
- E. After frames collide within a QoS STA and the lower priority AC subsequently gains a TXOP, the retry bit in the MAC header must be set to 1 to indicate a retry.
Answer: A,B
NEW QUESTION # 70
ABC International has installed a new smart ZigBee controlled lighting system. However, the network team is concerned that this new system will interfere with the existing WLAN and has asked you to investigate the impact of the two systems operating simultaneously in the 2.4 GHz band. When performing Spectrum Analysis, which question could you answer by looking at the FFT plot?
- A. Is the ZigBee system using more than 50% of the available airtime?
- B. Is the ZigBee system causing an increase in WLAN retries?
- C. Is the WLAN corrupting ZigBee system messages?
- D. Do the ZigBee channels used by the lighting system overlap with the WLAN channels?
Answer: D
Explanation:
Explanation
The FFT plot is a spectrum analysis plot that shows the RF power present at a particular frequency over a short period of time. It can help identify the sources and characteristics of RF signals in the spectrum. By looking at the FFT plot, you can determine which ZigBee channels are used by the lighting system and whether they overlap with the WLAN channels in the 2.4 GHz band. ZigBee channels are 5 MHz wide and WLAN channels are 20 MHz or 40 MHz wide, so there is a possibility of overlap and interference between them. The other questions cannot be answered by looking at the FFT plot alone, as they require other types of plots or analysis tools, such as duty cycle plot, airtime utilization plot, or protocol analyzer. References: [Wireless Analysis Professional Study Guide], Chapter 3: Spectrum Analysis, page 69-70
NEW QUESTION # 71
You are troubleshooting a client that is experiencing slow WLAN performance. As part of the troubleshooting activity, you start a packet capture on your laptop close to the client device. While analyzing the packets, you suspect that you have not captured all packets transmitted by the client. By analyzing the trace file, how can you confirm if you have missing packets?
- A. Look for gaps in the sequence number in MAC header
- B. The missing packets will be shown as CRC errored packets
- C. Retransmission are an indication of missing packets
- D. Protocol Analyzers show the number of missing packets in their statistics view
Answer: A
Explanation:
One way to confirm if you have missing packets in your packet capture is to look for gaps in the sequence number in MAC headers. The sequence number is a 12-bit field in the MAC header that is used to identify and order data frames within a traffic stream. The sequence number is incremented by one for each new data frame transmitted by a STA, except for retransmissions, fragments, and control frames. The sequence number can range from 0 to 4095, and then wraps around to 0. If you see a jump or a gap in the sequence number between two consecutive data frames from the same STA, it means that you have missed some packets in between. The other options are not correct, as they do not confirm if you have missing packets in your packet capture. CRC errored packets are packets that have been corrupted during transmission and have failed the error detection check. Protocol analyzers may show the number of CRC errored packets in their statistics view, but not the number of missing packets. Retransmissions are an indication of packet loss or collision, but not necessarily of missing packets in your capture.
NEW QUESTION # 72
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. 802.11h
- B. Band preference
- C. USB speed
- D. Power management
Answer: B
NEW QUESTION # 73
802.11k Neighbor Requests and Neighbor Reports are sent in what type of Management Frames?
- A. Action
- B. RRM
- C. Beacon
- D. Reassociation Request and Reassociation Response
Answer: A
Explanation:
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-404 CertifiedWireless Analysis Professional Study and Reference Guide, Chapter 6: MAC Sublayer Frame Exchanges, page 207; CWAP-404 Certified Wireless Analysis Professional Study and Reference Guide, Chapter 6: MAC Sublayer Frame Exchanges, page 208; CWAP-404 Certified Wireless Analysis Professional Study and Reference Guide, Chapter 12: 802.11k/v/r/u/w/ai Amendments, page 434.
NEW QUESTION # 74
Which one of the statements regarding the Frame Control field in an 802.11 MAC header is true?
- A. Only Control frames have a Frame Control field
- B. The Frame Control field is always set to 0
- C. The Frame Control field contains subfields, and soma in 1-bit flags
- D. The Frame Control field is used to communicate the duration value
Answer: C
Explanation:
Explanation
The statement that the Frame Control field contains subfields, and some 1-bit flags is true. The Frame Control field is a 2-byte field in the MAC header that contains information about the type, subtype, and characteristics of a frame. The Frame Control field is divided into several subfields, each with a specific function and length.
Some of these subfields are 1-bit flags, which can be set to 0 or 1 to indicate a certain condition or status. For example, the To DS and From DS subfields are 1-bit flags that indicate whether a frame is destined for or originated from the DS (Distribution System). The other statements are not true, as they do not describe the Frame Control field correctly. All types of frames (management, control, and data) have a Frame Control field, not just control frames. The Frame Control field is not used to communicate the duration value, which is a separate field in the MAC header. The Frame Control field is not always set to 0, as it varies depending on the type, subtype, and characteristics of each frame. References: [Wireless Analysis Professional Study Guide CWAP-404], Chapter 5: 802.11 MAC Sublayer, page 113-114
NEW QUESTION # 75
Which one of the following is an advantage of using display filters that is not an advantage of capture-time filters?
- A. Once created they are reusable for later captures
- B. They allow for focused analysis on just the packets of interest
- C. Multiple of them can be applied simultaneously
- D. They only hide the packets from view and the filtered packets can be enabled for view later
Answer: D
Explanation:
Explanation
Display filters are applied after the capture is completed and they only hide the packets from view. The filtered packets are still present in the capture file and can be enabled for view later by changing or removing the display filter. This is an advantage over capture-time filters, which discard the packets that do not match the filter criteria and cannot be recovered later34 References:
CWAP-403 Study Guide, Chapter 2: Protocol Analysis, page 37
CWAP-403 Objectives, Section 2.3: Apply display filters
NEW QUESTION # 76
Which one of the statements regarding the Frame Control field in an 802.11 MAC header is true?
- A. The Frame Control field is always set to 0
- B. Only Control frames have a Frame Control field
- C. The Frame Control field is used to communicate the duration value
- D. The Frame Control field contains three sub-fields and eight one-bit flags
Answer: A
Explanation:
This field is simply used to indicate which protocol version of 802.11 is being used by the frame.
This is always set to "0"
Reference: https://mrncciew.com/2014/09/27/cwap-mac-header-frame-control/
NEW QUESTION # 77
You are using a Wireless Aggregator utility to combine multiple packet captures.
One capture exists for each of channels 1, 6 and 11.
What kind of troubleshooting are you likely performing with such a tool?
- A. Interference source location.
- B. Narrowband DoS attack detection.
- C. Fast secure roaming problems.
- D. Wireless adapter failure analysis.
Answer: C
NEW QUESTION # 78
When performing protocol analysis, you capture an 802.11ac data frame on channel 52, transmitted at MSC 8.
At what data rate was the PHY Preamble transmitted?
- A. 6 Mbps
- B. 54 Mbps
- C. 86.7 Mbps
- D. 78 Mbps
Answer: A
Explanation:
The transmitter sends the preamble at 1 Mbps (802.11 or 802.11b DSSS) or 6 Mbps (802.11a or
802.11g ERP-OFDM).
Reference: http://mediA.techtarget.com/searchMobileComputing/downloads/CWAP_ch8.pdf
NEW QUESTION # 79
As a WLAN consultant, you have been asked to troubleshoot a problem with a single wireless client station (Station-Z). Your customer informs you that other wireless client stations are not having problems with wireless connectivity, and that Station-Z is configured in the same manner as all other wireless client stations on the network. Station-Z is showing an unusually high retransmission count in its client utility statistics. Using a wireless protocol analyzer, where and how should you begin troubleshooting this problem? (Choose 2)
- A. Position the analyzer halfway between Station-Z and the access point. Measure the distance between Station-Z and the access point.
- B. Position the analyzer near Station-Z. Analyze Station-Z's transmissions and acknowledgements.
Look for RF and obstacle-induced interference. - C. Position the analyzer halfway between Station-Z and the access point. Analyze the data rate at which frames are sent and how long they take to be received.
- D. Position the analyzer near the access point. See if Station-Z's frames are reaching the access point and if so, analyze their signal strength.
- E. Position the analyzer near Station-Z. Analyze the frames Station-Z is receiving, looking for delayed ACK frames.
Answer: B,D
NEW QUESTION # 80
A manager at a retail outlet has complained that an incident occurred allowing a STA to launch an attack against another STA connected to their public Wi-Fi hotspot. He has asked you to troubleshoot the situation and verify that all possible measured are being taken to prevent this.
What configuration should you check in the AP?
- A. Captive portal Internet gateway
- B. Client-to-client direct communications
- C. Inter-VAP filtering
- D. DNS settings
Answer: C
NEW QUESTION # 81
As the WLAN administrator in your organization you are responsible for troubleshooting connection issues. Several STAs are connecting to the network, but are unable to communicate after connection. You suspect a DHCP problem. After capturing traffic on the wired-side of the AP, you want to view only DHCP traffic. What filter in Wireshark can be used for this purpose?
- A. DHCPv6
- B. DHCP
- C. BOOTP
- D. DHCPv4
Answer: C
NEW QUESTION # 82
How is the length of an AIFS is calculated?
- A. SIFS + AIFS * Time Unit
- B. AIFSN * Slot Time + SIFS
- C. DIFS + SIFS + AIFSN
- D. SIFS * Slot Time + AIFSN
Answer: B
Explanation:
The length of an AIFS (Arbitration Interframe Space) is calculated by multiplying the AIFSN (Arbitration Interframe Space Number) by the Slot Time and adding the SIFS (Short Interframe Space). An AIFS is a variable interframe space introduced by 802.11e to help prioritize medium access for different Access Categories (ACs). An AC is a logical queue that corresponds to a QoS (Quality of Service) level for different types of traffic. Each AC has a different AIFSN 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 Slot Time is a fixed value that depends on the PHY type and channel width. The SIFS is the shortest interframe space that is used for high-priority transmissions, such as ACKs or CTSs. The formula for calculating the AIFS length is: AIFS = AIFSN * Slot Time + SIFS.
NEW QUESTION # 83
In which element of a Beacon frame would you look to identify the current HT protection mode in which an AP is operating?
- A. HT Capabilities Element
- B. HT Operations Element
- C. HT Information Element
- D. HT Protection Element
Answer: B
Explanation:
The HT protection mode in which an AP is operating can be identified by looking at the HT Operations element in a Beacon frame. The HT Operations element is a part of the Beacon frame that contains information about the High Throughput (HT) capabilities and operation of an
802.11n BSS. The HT Operations element has a field called HT Protection, which indicates how the BSS protects its HT transmissions from interference or collisions with non-HT devices or BSSs. The HT Protection field can have four values: No Protection, Nonmember Protection, 20 MHz Protection, or Non-HT Mixed Mode. The other options are not correct, as they do not contain information about the HT protection mode. The HT Protection element does not exist, the ERP Information element is used for Extended Rate PHY (ERP) protection mode for 802.11g devices, and the HT Capabilities element is used for indicating the supported HT features of an individual device.
NEW QUESTION # 84
Which statements are true regarding frame acknowledgement in an IEEE 802.11 WLAN?
(Choose
3)
- A. Probe request acknowledgement (sending of a Probe Response frame) is configurable in the access point and is always linked to SSID broadcast configuration in Beacons.
- B. Data frame fragments are acknowledged individually (with an ACK frame).
- C. The RA field of ACK frames is always obtained from the Address 2 field in the corresponding frame being acknowledged.
- D. A client station's Reassociation Request frames are only acknowledged with a Reassociation Response from the access point and not with an ACK frame.
- E. In an EDCA BSS, encrypted Data frames are only acknowledged by client stations, never by access points.
- F. Following non-QoS Data frames with the More Fragments bit set to 1, the Duration/ID field of the ACK frame is set to a value equal to two SIFS plus the next Data fragment and its ACK.
Answer: B,C,F
NEW QUESTION # 85
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