[Jul 21, 2025] New CWAP-404 Exam Dumps with High Passing Rate
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NEW QUESTION # 52
Given: Protocol analyzer often have useful graphical dashboards providing information about the health and operations of the WLAN.
What is a valid use of a graph showing the Top APs Based on Active Associations?
- A. Ensuring compliance with corporate security policies
- B. Discovering the total number of client STAs on your network
- C. Locating overloaded APs
- D. Evaluating the capacity handling on a specific channel
Answer: C
NEW QUESTION # 53
In the 2.4 GHZ band, what data rate are Probe Requests usually sent at from an unassociated STA?
- A. The minimum basic rate
- B. 6 Mbps
- C. MCS 0
- D. 1 Mbps
Answer: A
Explanation:
Explanation
In the 2.4 GHz band, probe requests are usually sent at the minimum basic rate from an unassociated STA. A probe request is a type of management frame that is transmitted by a STA to discover available BSSs in its vicinity. A probe request can be sent on one or more channels in either passive or active scanning mode. In passive scanning mode, a STA listens for beacon frames from APs on each channel. In active scanning mode, a STA sends probe requests on each channel and waits for probe responses from APs. A probe request is usually sent at the minimum basic rate, which is the lowest data rate among the supported rates that is required for all STAs to join and communicate with a BSS. The minimum basic rate can vary depending on the configuration of each BSS, but it is typically one of these values: 1 Mbps, 2 Mbps, 5.5 Mbps, or 11 Mbps in the 2.4 GHz band. The other options are not correct, as they do not reflect how probe requests are usually sent in the 2.4 GHz band. MCS 0 is a modulation and coding scheme used by 802.11n/ac devices in either band, but it is not a data rate per se. 6 Mbps is a data rate used by OFDM devices in either band, but it is not usually configured as a minimum basic rate in the 2.4 GHz band. References: [Wireless Analysis Professional Study Guide CWAP-404], Chapter 5: 802.11 MAC Sublayer, page 123-124
NEW QUESTION # 54
What should the To DS and From DS flags be to set to in an Association Response frame?
- A. To DS = 0, From DS = 1
- B. To DS = 1, From DS = 1
- C. To DS = 1, From DS = 0
- D. To DS = 0, From DS = 0
Answer: D
Explanation:
In an Association Response frame, both the To DS and From DS flags should be set to 0 because this frame is used for communication between a station and an access point (AP) in the same wireless local area network (WLAN), not involving the distribution system (DS).
NEW QUESTION # 55
In the frame decode shown, there are two sets of supported data rates. 1, 2, 5.5, and 11 Mbps are all shown as "basic" data rates, and 6, 9, 12, 18, 24, 36, 48, and 54 Mbps are shown simply as supported data rates.
What is true of "basic" data rates in this context?
- A. Basic rates are defined in an AP's service set to specify mandatory data rates for all retry frames.
- B. Basic rates are only used for multicast traffic, and do not affect unicast traffic.
- C. The highest data rate set to Basic is automatically used to send broadcast traffic such as Beacon frames.
- D. Basic rates are optional data rates for the BSS, often used for assuring connectivity for legacy stations.
- E. The AP requires all client stations to support Basic rates in order to associate to its BSS.
Answer: E
NEW QUESTION # 56
You have received reports of performance problems in a BSS. One specific user is indicating that her downloads are taking a very long time compared to other users around her.
You want to determine if the AP is sending frames multiple times to get through to the user's computer.
Where should you monitor with the protocol analyzer to see retries from the AP in this scenario?
- A. Very near the client STA
- B. Capture from another AP in another BSS
- C. Very near the AP
- D. Directly in the middle of the AP and client STA
Answer: C
NEW QUESTION # 57
What is the function of the PMD sub-layer?
- A. Converts 1s and 0s given to it by the PLCP sub-layer into the appropriate RF signals
- B. Provides framing
- C. Performs A-MPDU
- D. Adds a PHY preamble and header to a PSDU
Answer: A
NEW QUESTION # 58
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. A firmware upgrade for the spectrum analysis adapter
- B. SNMP read credentials to the WLAN controller or APs
- C. A directional antenna
- D. An 802.11 wireless adaptor
Answer: D
Explanation:
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-404 Study Guide, Chapter 4: Spectrum Analysis and Troubleshooting, page 123 CWAP-404 Objectives, Section 4.2: Integrate Wi-Fi data with spectrum analysis data CWAP-404 Study Guide, Chapter 4: Spectrum Analysis and Troubleshooting, page 131
NEW QUESTION # 59
After examining a Beacon frame decode you see the SSID Element has a length of 0. What do you conclude about this frame?
- A. This is a common attack on WISP backend SQL databases
- B. The frame is corrupted
- 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 # 60
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. The Frame Control field is used to communicate the duration value
- C. Only Control frames have a Frame Control field
- D. The Frame Control field contains three sub-fields and eight one-bit flags
Answer: D
Explanation:
Explanation: The Frame Control field in the 802.11 MAC header contains several sub-fields that define control information about the frame, including the type of frame, whether the frame is fragmented, and other parameters. Specifically, the Frame Control field has two main parts:
The sub-fields include Protocol Version, Type, Subtype, etc.
It also contains eight one-bit flags such as To DS, From DS, More Fragments, Retry, Power Management, etc.
NEW QUESTION # 61
As it relates to a spectrum analyzer, complete the following sentence.
The ____________ plot always displays the percentage of time (shown on the Y axis) that the overall RF power is a certain specified threshold (of amplitude) above the noise floor for a given frequency range (shown on the X axis).
- A. Real-Time FFT
- B. SNR
- C. FFT Duty Cycle
- D. Interferer Count
- E. Swept Spectrogram
Answer: C
NEW QUESTION # 62
Which one of the these is the most important in the WLAN troubleshooting methodology among those listed?
- A. Interview the network manager about the issues being experienced
- B. Observe the problem
- C. Obtain detailed knowledge of the wireless vendors debug and logging options
- D. Talk to the end users about their experiences
Answer: B
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 problem.
NEW QUESTION # 63
What is the formula used to calculate the Duration field value in an RTS frame?
- A. RTS Duration field = Data or management frame to be sent duration + CTS duration
- B. RTS Duration field = Data or management frame to be sent duration + CTS duration + one ACK duration + three SIFS
- C. RTS Duration field = Data or management to be sent frame duration
- D. RTS Duration field = CTS duration
Answer: B
NEW QUESTION # 64
A PHY Header is added to the PSDU at which sub-layer?
- A. MAC
- B. Network
- C. LLC
- D. PHY
Answer: D
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.
NEW QUESTION # 65
A client is operating in an unstable RF environment. Out of five data frames transmitted to the client it only receives four. The client sends a Block Ack to acknowledge the receipt of these four frames but due to frame corruption the Block Ack is not received by the AP. Which frames will be transmitted?
- A. Only the Block Ack
- B. Both the corrupted data and Block Ack
- C. Only the data frame which was corrupted
- D. All data frames
Answer: D
Explanation:
All data frames will be retransmitted in this scenario. This is because the AP uses a Block Ack (BA) mechanism to acknowledge the receipt of multiple data frames from a client in a single frame. The BA contains a bitmap that indicates which data frames were received correctly and which were not. If the BA is not received by the AP due to frame corruption, the AP will assume that none of the data frames were received by the client and will retransmit all of them. The other options are not correct, as they do not account for the loss of the BA or the use of the bitmap.
NEW QUESTION # 66
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. DHCP problems
- B. High 802.11 CRC rates
- C. WMM QoS issues
- D. High 802.11 retry rates
Answer: A
Explanation:
DHCP problems would typically warrant wired-side analysis because DHCP transactions primarily occur over the wired network between the APs and the DHCP server. Issues such as IP address assignment failures or delays are often related to misconfigurations or network issues on the wired infrastructure, so troubleshooting with a protocol analyzer on the wired side is essential.
NEW QUESTION # 67
You have implemented an AP at a remote office. It is a single-band AP supporting 802.11ac.
Several users complain that their laptops cannot connect to the WLAN. These laptops are from multiple vendors and range in age from 2 to 4 years. The SSID and security profile settings are correct. All default settings were used on the AP with the exception of the SSID and security settings. What is the most likely issue preventing these STAs from connecting to the AP?
- A. They are 2.4 GHz-only devices
- B. They do not support the basic data rates
- C. They do not support VHI and only support OFDM
- D. They are 5 GHz-only devices
Answer: A
Explanation:
Since the AP is a single-band AP supporting 802.11ac, it operates only on the 5 GHz band. If the laptops are 2.4 GHz-only devices, they will not be able to connect because they do not support the 5 GHz band that the AP is operating on. This is likely the issue preventing these older devices from connecting to the WLAN.
NEW QUESTION # 68
Which one of the following is required for Wi-Fi integration in laptop-based Spectrum Analyzer software?
- A. A dual radio spectrum analyzer card
- B. SNMP read credentials to the WLAN controller or APs
- C. Any 802.11 wireless adaptor
- D. A supported WLAN adaptor with a customized driver
Answer: A
NEW QUESTION # 69
The data rate for a data frame is 150 Mbps in 5 GHz.
What rate is used to transmit the PHY header information?
- A. 1 Mbps
- B. 6 Mbps
- C. 150 Mbps
- D. 75 Mbps
Answer: A
NEW QUESTION # 70
What element was added to the general frame of 802.11 with the 802.11e amendment and the 802.11- 2007 rollup?
- A. RSN-IE
- B. HT Control
- C. QoS Control
- D. Address 4
Answer: C
NEW QUESTION # 71
Which statements are true regarding Beacons from an AP in an HT infrastructure BSS that is configured with multiple WLAN profiles? (Choose 3)
- A. All Beacons generated by APs contain a TIM information element.
- B. The Beacon interval must be the same for all WLANs (SSIDs) supported by a single AP
- C. The BSSID and Source Address are always the same.
- D. When the SSID is "hidden," the ESS subfield of the Capability Information field distinguishes one BSS from another.
- E. The Receiver address and the BSSID are always the same.
- F. The Destination Address is always FF:FF:FF:FF:FF:FF.
- G. Beacons can be disabled for security purposes.
Answer: A,C,F
NEW QUESTION # 72
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