[Dec-2025] Verified CWNP Exam Dumps with CWAP-405 Exam Study Guide
Best Quality CWNP CWAP-405 Exam Questions TestBraindump Realistic Practice Exams [2025]
NEW QUESTION # 49
You have been asked to recommend a solution for protocol capture of 802.11 frames consisting of 3x3:3
802.11ac communications. The requirement specifies that you gain a general view of a coverage area and does not require that you capture from specific user locations. The solution must be the least expensive practical solution possible that does not disrupt user access to the WLAN and it must be based on enterprise WLAN hardware.
What solution would you recommend so that any coverage area could be monitored on demand?
- A. Install the minimum number of Aps required for coverage and use these Aps for protocol analysis as needed
- B. Install sufficient Aps so that an AP can be taken offline to perform protocol analysis as needed
- C. Install laptop-based protocol analyzer near each AP
- D. Install Wireshark on the Aps natively to allow dynamic capture while serving clients
Answer: D
NEW QUESTION # 50
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 are meant to provide information to the network that may result in state changes, but they are not open for rejection
- B. They only include beacon and probe request frames
- C. They only include beacon and probe response frames
- D. They are used to allow a STA to awake from sleep and for no other reason
Answer: C
NEW QUESTION # 51
In a Spectrum Analyzer the Swept Spectrogram plot displays what information?
- A. Reductions in frame transmissions
- B. RF power present at a particular frequency over the course of time
- C. Wi-Fi Device information
- D. The RF time domain
Answer: B
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 # 52
A PHY Header is added to the PSDU at which layer?
- A. LLC
- B. PHY
- C. MAC
- D. Network
Answer: B
Explanation:
A PHY header is added to the PSDU at the PHY layer. A PHY header is a part of the PPDU that contains information such as modulation, coding, and data rate. The PHY header is added by the PHY layer when it converts a PSDU to a PPDU for transmission, or removed by the PHY layer when it converts a PPDU to a PSDU for reception. The other layers do not add or remove a PHY header. References: [Wireless Analysis Professional Study Guide CWAP-405], Chapter 4: 802.11 Physical Layer, page 97-98
NEW QUESTION # 53
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?
- A. RSSI is increased
- B. Output power is increased
- C. Antenna gain is increased
- D. Data rates are reduced
Answer: D
NEW QUESTION # 54
You have been asked to recommend a protocol analysis solution that uses open source software and works with the Linux platform. It must provide decoding of 802.11ac frames and minimal support for reporting and statistics.
What solution would you recommend?
- A. Wireshark
- B. CommView for Wi-Fi
- C. OmniPeek
- D. Wi-Fi Analyzer Pro
Answer: A
NEW QUESTION # 55
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. USB speed
- C. Band preference
- D. 802.11h
Answer: C
NEW QUESTION # 56
You are troubleshooting throughput problems for a WLAN cell. The cell is provisioned with an 802.11ac dual- band AP. Users connected with both 5 GHz and 2.4 GHz connections are reporting performance problems.
The AP settings are properly optimized. No interface issues have been detected (either co-channel interference or non-Wi-Fi interference) and the number of associated users is low.
What should you analyze to resolve the issue?
- A. the Ethernet uplink and the network infrastructure
- B. The antennas used on the client devices
- C. The 5 GHz radio configuration
- D. The 2.4 GHz radio configuration
Answer: A
NEW QUESTION # 57
When using Wireshark for protocol analysis, what filter will allow you to see only beacon frames?
- A. wlan.fc.type_subtype = =0x0b
- B. wlan.fc.type_subtype = =0x08
- C. wlan.fc.type_subtype = =0x05
- D. wlan.fc.type_subtype = =0x04
Answer: B
Explanation:
References:
NEW QUESTION # 58
You're the WLAN administrator for a large retailer based at the HQ in New York. The London-based office has been complaining about WLAN disconnections around lunch time each day. You suspect this might be interference from the staff microwave, how might you test your theory from the New York office?
- A. Ask a local member of staff to change the frequency of the microwave and see if the disconnections stop
- B. Access the microwave remotely and run a diagnostic check
- C. Place one of the London APs into spectrum analyzer mode and monitor the situation over lunch time
- D. Ask a local member of staff to take some pictures of the microwave, including some close-ups of the door seal so that you can assess it
Answer: C
Explanation:
The best way to test the theory of microwave interference from the New York office is to use a remote spectrum analyzer. By placing one of the London APs into spectrum analyzer mode, you can capture and analyze the RF spectrum in the London office over lunch time. You can then look for any signs of microwave interference, such as high duty cycle, high amplitude, or frequency hopping on the 2.4 GHz band. This method does not require any physical access to the microwave or any changes to its frequency. References: [Wireless Analysis Professional Study Guide], Chapter 3: Spectrum Analysis, page 64
NEW QUESTION # 59
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. 11, 5.5, 2, 1
- C. 24, 18, 12, 6
- D. 24, 18, 11, 2
Answer: C
NEW QUESTION # 60
What is encrypted within the third message of the 4-Way Handshake?
- A. PTK
- B. GMK
- C. PMK
- D. GTK
Answer: D
Explanation:
The GTK (Group Temporal Key) is encrypted within the third message of the 4-Way Handshake. The 4-Way Handshake is a process that establishes a secure connection between a STA (station) and an AP (access point) using WPA2 (Wi-Fi Protected Access 2), which is a security protocol that uses AES-CCMP (Advanced Encryption Standard-Counter Mode CBC-MAC Protocol) as its encryption algorithm. The 4-Way Handshake consists of four messages that are exchanged between the STA and the AP. The first message is sent by the AP to the STA, containing the ANonce (Authenticator Nonce), which is a random number generated by the AP. The second message is sent by the STA to the AP, containing the SNonce (Supplicant Nonce), which is a random number generated by the STA, and the MIC (Message Integrity Code), which is a value that verifies the integrity of the message. The third message is sent by the AP to the STA, containing the GTK, which is a key that is used to encrypt and decrypt multicast and broadcast data frames, and the MIC. The GTK is encrypted with the KEK (Key Encryption Key), which is derived from the PTK (Pairwise Temporal Key).
The PTK is a key that is used to encrypt and decrypt unicast data frames, and it is derived from the PMK (Pairwise Master Key), the ANonce, and the SNonce. The fourth message is sent by the STA to the AP, containing only the MIC, to confirm the completion of the 4-Way Handshake. The other options are not correct, as they are not encrypted within the third message of the 4-Way Handshake. The PMK is a key that is derived from a passphrase or obtained from an authentication server, and it is not transmitted in any message of the 4-Way Handshake. The PTK is a key that is derived from the PMK, the ANonce, and the SNonce, and it is not transmitted in any message of the 4-Way Handshake. The GMK (Group Master Key) is a key that is generated by the AP and used to derive the GTK, and it is not transmitted in any message of the 4-Way Handshake. References: [Wireless Analysis Professional Study Guide CWAP-405], Chapter 8: Security Analysis, page 211-213
NEW QUESTION # 61
iPerf is a tool used in what category of testing?
- A. Configuration
- B. Name resolution
- C. Throughput
- D. Connection
Answer: C
NEW QUESTION # 62
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 firmware upgrade for the spectrum analysis adapter
- C. An 802.11 wireless adaptor
- D. A directional antenna
Answer: C
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 # 63
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. Python
- B. WLAN scanner
- C. Spectrum analyzer
- D. Capture visualization tool
Answer: D
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-405Study Guide, Chapter 2: Protocol Analysis, page 63
* CWAP-405Objectives, Section 2.5: Use capture visualization tools
* CWAP-405Study Guide, Chapter 4: Spectrum Analysis and Troubleshooting, page 117
* CWAP-405Objectives, Section 4.1: Use spectrum analysis tools
* CWAP-405Study Guide, Chapter 2: Protocol Analysis, page 33
* CWAP-405Objectives, Section 2.2: Analyze field values
NEW QUESTION # 64
What is the function of the PHY layer?
- A. Convert PPDUs to MSDUs for transmissions and MSDUs to PPDUs 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 PSDUs to PPDUs for transmissions and PPDUs to PSDUs for receptions
Answer: D
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 # 65
A manufacturing facility has installed a new automation system which incorporates an 802.11 wireless network. The automation system is controlled from tablet computers connected via the WLAN. However, the automation system has not gone live due to problem with the tablets connecting to the WLAN. The WLAN vendor has been onsite to perform a survey and confirmed good primary and secondary coverage across the facility. As a CWAP you are called in to perform Spectrum Analysis to identify any interference sources.
From the spectrum analysis, you did not identify any interference sources but were able to correctly identify the issue. Which of the following issues did you identify from the spectrum analysis?
- A. A high noise floor has resulted in a SNR of less than 20dB
- B. The tablets are entering power save mode and failing to wake up to receive the access points transmissions
- C. There is a power mismatch between the APs and the clients
- D. The tablets are connecting to the wrong SSID
Answer: C
Explanation:
The most likely issue that can be identified from the spectrum analysis is a power mismatch between the APs and the clients. A power mismatch occurs when the APs transmit at a higher power level than the clients, or vice versa. This can cause asymmetric communication, where one side can hear the other, but not vice versa.
This can result in poor performance, disconnections, or packet loss. A spectrum analysis can reveal a power mismatch by showing different signal amplitudes or RSSI values for the APs and the clients on the same channel or frequency. The other options are not correct, as they cannot be identified from the spectrum analysis alone. The tablets' SSID, power save mode, and noise floor can be determined by using other tools or methods, such as protocol analysis, site survey, or device configuration. References: [Wireless Analysis Professional Study Guide CWAP-405], Chapter 3: Spectrum Analysis, page 79-80
NEW QUESTION # 66
You work as an SE for a value-added reseller. A client has an existing deployment of 802.11n Aps and wants to upgrade several BSSs to 802.11ac.
What hardware feature of some enterprise Aps may allow for this without a forklift upgrade?
- A. Converting the 802.11n radio to an 802.11ac radio through software
- B. Adding an 802.11ac module to the existing APs
- C. Replace the antennas with 802.11ac antennas
- D. Simply check the Enable 802.11ac checkbox in the web-based configuration interface
Answer: D
NEW QUESTION # 67
VoIP is used heavily in your organization. You must troubleshoot problems with dropped calls on the WLAN.
What is a common cause of dropped calls when using Wi-Fi VoIP phones?
- A. Use of WMM
- B. Data rates below 54 Mbps
- C. Slow roaming
- D. Data rates below 75 Mbps
Answer: C
NEW QUESTION # 68
You must report on frame types seen on the WLAN. You want to list the frame types by both name and binary value.
What frame type is represented by the binary value 011010, which includes the Type and Subtype values?
- A. Association Request
- B. Beacon
- C. Authentication
- D. PS-Poll
Answer: D
Explanation:
References:
NEW QUESTION # 69
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 Capabilities Element
- B. HT Operations Element
- C. HT Protection Element
- D. ERP Information 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. References: [Wireless Analysis Professional Study Guide CWAP-405], Chapter 5: 802.11 MAC Sublayer, page 125-126
NEW QUESTION # 70
Which piece of information is not transmitted in an HT PPDU header?
- A. Channel number
- B. MCS index
- C. PPDU length
- D. Number of Spatial Streams
Answer: A
Explanation:
The channel number is not transmitted in an HT PPDU header. An HT PPDU header is a part of the PPDU that contains information such as modulation, coding, data rate, and number of spatial streams for an 802.11n transmission. The channel number is not included in the HT PPDU header, as it is determined by the frequency band and channel width that are used by the transmitter and receiver. The channel number can be inferred from the frequency band and channel width, which are indicated by bits in different fields of the HT PPDU header, such as HT-SIG and HT-LTF. The other options are not correct, as they are transmitted in an HT PPDU header. The number of spatial streams, PPDU length, and MCS index are indicated by bits in the HT-SIG field of the HT PPDU header. References: [Wireless Analysis Professional Study Guide CWAP-
405], Chapter 4: 802.11 Physical Layer, page 108-109
NEW QUESTION # 71
What is the function of 802.11 Management frames?
- A. Prioritize network administration traffic
- B. Manage the flow of data
- C. Communicate configuration changes between WLAN controller and APs
- D. Manage the BSS
Answer: D
Explanation:
The function of 802.11 management frames is to manage the BSS. A BSS (Basic Service Set) is a group of STAs (stations) that share a common SSID (Service Set Identifier) and communicate with each other through an AP (access point) or directly in an ad hoc mode. Management frames are one of the three types of 802.11 frames, along with control and data frames. Management frames are used to establish, maintain, and terminate associations between STAs and APs, as well as to advertise and discover BSSs, exchange security information, report errors, and perform other management functions. The other options are not correct, as they are not functions of 802.11 management frames. Prioritizing network administration traffic, communicating configuration changes between WLAN controller and APs, and managing the flow of data are functions of other types of frames or protocols. References: [Wireless Analysis Professional Study Guide CWAP-405], Chapter 5: 802.11 MAC Sublayer, page 120-121
NEW QUESTION # 72
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