CWAP-404 Exam Preparation Material with New CWAP-404 Dumps Questions [Q59-Q76]

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CWAP-404 Exam Preparation Material with New CWAP-404 Dumps Questions

CWAP-404 2026 Training With 184 QA’s

CWNP CWAP-404 Exam Topics:

Section Objectives

Protocol Analysis – 15%

Capture 802.11 frames using the appropriate methods – Select capture devices

  • Laptop protocol analyzers
  • APs, controllers, and other management solutions
  • Specialty devices (hand-held analyzers and custom-built devices)

– Install monitor mode drivers
– Select capture location(s)
– Capture sufficient data for analysis
– Capture all channels or capture on a single channel as needed
– Capture roaming events

Understand and apply the common capture configuration parameters available in protocol analysis tools – Save to disk
– Packet slicing
– Event triggers
– Buffer options
– Channels and channel widths
– Capture filters
– Channel scanning and dwell time
Analyze 802.11 frame captures to discover problems and find solutions – Use appropriate display filters to view relevant frames and packets
– Use colorization to highlight important frames and packets
– Configure and display columns for analysis purposes
– View frame and packet decodes while understanding the information shown and applying it to the analysis process
– Use multiple adapters and channel aggregation to view captures from multiple channels
– Implement protocol analyzer decryption procedures
– View and use a capture’s statistical information for analysis
– Use expert mode for analysis
– View and understand peer maps as they relate to communications analysis
Utilize additional tools that capture 802.11 frames for analysis and troubleshooting – WLAN scanners and discovery tools
– Protocol capture visualization and analysis tools
– Centralized monitoring, alerting, and forensic tools
Ensure appropriate troubleshooting methods are used with all analysis types – Define the problem
– Determine the scale of the problem
– Identify probable causes
– Capture and analyze the data
– Observe the problem
– Choose appropriate remediation steps
– Document the problem and resolution

Spectrum Analysis – 10%

Capture RF spectrum data and understand the common views available in spectrum analyzers – Install, configure, and use spectrum analysis software and hardware
– Capture RF spectrum data using handheld, laptop-based, and infrastructure spectrum capture solutions
– Understand and use spectrum analyzer views

  • Real-time FFT
  • Waterfall, swept spectrogram, density, and historic views
  • Utilization and duty cycle
  • Detected devices
  • WLAN integration views
Analyze spectrum captures to identify relevant RF information and issues – RF noise floor in an environment
– Signal-to-Noise Ratio (SNR) for a given signal
– Sources of RF interference and their locations
– RF channel utilization
– Non-Wi-Fi transmitters and their impact on WLAN communications
– Overlapping and non-overlapping adjacent channel interference
– Poor performing or faulty radios
Analyze spectrum captures to identify various device signatures – Identify various 802.11 PHYs

  • DSSS
  • OFDM
  • OFDMA
  • Channel widths
  • Primary channel

– Identify non-802.11 devices based on RF behaviors and signatures

  • Frequency hopping devices
  • IoT devices
  • Microwave ovens
  • Video devices
  • RF Jammers
  • Cordless phones
Use centralized spectrum analysis solutions – AP-based spectrum analysis
– Sensor-based spectrum analysis

PHY Layers and Technologies – 10%

Understand and describe the functions of the PHY layer and the PHY protocol data units (PPDUs) – DSSS (Direct Sequence Spread Spectrum)
– HR/DSSS (High Rate/Direct Sequence Spread Spectrum)
– OFDM (Orthogonal Frequency Division Multiplexing)
– ERP (Extended Rate PHY)
– HT (High Throughput)
– VHT (Very High Throughput)
– HE (High Efficiency)

  • HE SU PPDU
  • HE MU PPDU
  • HE ER SU PPDU
  • HE TB PPDU
  • HE NULL data packets
Apply the understanding of PHY technologies, including PHY headers, preambles, training fields, frame aggregation, and data rates, to captured data
Identify and use PHY information provided within pseudo-headers in protocol analyzers – Pseudo-Header formats

  • Radiotap
  • Per Packet Information (PPI)

– Key pseudo-header content

  • Guard intervals
  • Resource units allocation
  • PPDU formats
  • Signal strength
  • Noise
  • Data rate and MCS index
  • Length information
  • Channel center frequency or received channel
  • Channel properties
Recognize the limits of protocol analyzers to capture PHY information including NULL data packets and PHY headers
Use appropriate capture devices based on proper understanding of PHY types – Supported PHYs
– Supported spatial streams

MAC Sublayer and Functions – 25%

Understand frame encapsulation and frame aggregation – Frame aggregation (A-MSDU and A-MPDU)
Identify and use MAC information in captured data for analysis – Management, Control, and Data frames
– MAC frame formats and contents

  • Frame Control field
  • To DS and From DS fields
  • Address fields
  • Frame Check Sequence (FCS) field

– 802.11 Management frame formats

  • Information Elements
  • Authentication
  • Association and Reassociation
  • Beacon
  • Prove Request and Probe Response

– Data and QoS Data frame formats
– 802.11 Control frame formats

  • Acknowledgement (ACK)
  • Request to Send/Clear to Send (RTS/CTS)
  • Block Acknowledgement and related frames
  • Trigger frames
  • VHT/HE NDP announcements
  • Multiuser RTS

 

QUESTION 59
How many frames are exchanged for 802.11 authentication in the 6 GHz band when WPA3- Enterprise is not used, and a passphrase is used instead?

 
 
 
 

QUESTION 60
When using a commercial WLAN protocol analyzer, you notice that it is listing vendor names for some APs and client STAs.
What is the source of this information?

 
 
 
 

QUESTION 61
Which one of the following statements describes the function of WMM Admission Control?

 
 
 
 

QUESTION 62
A PHY Header is added to the PSDU at which sub-layer?

 
 
 
 

QUESTION 63
Your wireless network troubleshooting kit includes an antenna with the following specifications:
Gain: 5 dBi
Azimuth Beamwidth: 55 degrees
Elevation Beamwidth: 50 degrees
Frequency Range: 2.4 – 2.5 GHz and 4.9 – 5.9 GHz
Polarization: Linear
Impedance: 50 Ohms
For what aspect of network troubleshooting would this antenna be most useful?

 
 
 
 
 

QUESTION 64
Given: Shown are frames captured from an IEEE 802.1X/LEAP authentication.
This WLAN is a Robust Security Network (RSN) using the CCMP cipher suite.

Using the information given in the screenshot, calculate how long it takes for only the frames that are part of the 4-Way handshake to complete.

 
 
 
 
 

QUESTION 65
You are attempting to work through a user complaint with the CWNP-recommended troubleshooting methodology.
What must be clearly identified in order to reduce the number of possible causes at step three?

 
 
 
 

QUESTION 66
Which statement accurately describes IEEE 802.11 Power Save operation in a Basic Service Set that does not support the QoS facility?

 
 
 
 
 

QUESTION 67
Which one of the following is required for Wi-Fi integration in laptop-based Spectrum Analyzer software in addition to the spectrum analysis adapter?

 
 
 
 

QUESTION 68
Given: There are many differences between analyzing wireless and wired networks. In a wireless network, there is no guarantee that one station can hear another station’s transmissions.
If no corrective actions are taken nor corrective mechanisms implemented when a “hidden node” problem exists, which measurable statistics parameter will likely increase in a wireless protocol analyzer?

 
 
 
 
 
 

QUESTION 69
How long, in microseconds, is the required Slot Time that is announced by an AP in an HT BSS when HR/DSSS, ERP-OFDM, and HT-OFDM client stations are associated to the AP?

 
 
 
 
 

QUESTION 70
What is the function of the PHY layer?

 
 
 
 

QUESTION 71
Which one of the following is an advantage of using display filters that is not an advantage of capture-time filters?

 
 
 
 

QUESTION 72
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?

 
 
 
 

QUESTION 73
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?

 
 
 
 

QUESTION 74
ABC Company is having VoWiFi latency problems on their 802.11g WLAN. A wireless administrator has noticed in the phone’s client utilities software that the MAC CRC Error count is higher on stations with problems than on those client stations without problems.
A high MAC CRC Error count is attributable to which of the following? (Choose 3)

 
 
 
 
 
 

QUESTION 75
Given: The graphic is taken from a spectrum analyzer.

What types of RF transmitters are illustrated?

 
 
 
 

QUESTION 76
The IEEE 802.11 Dynamic Frequency Selection (DFS) service is capable of performing what functions? (Choose 2)

 
 
 
 
 

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