CWAP-404 CWNP

Mar-2024 Download Free Latest Exam CWAP-404 Certified Sample Questions [Q20-Q38]

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Mar-2024 Download Free Latest Exam CWAP-404 Certified Sample Questions

Prepare for your exam certification with our CWAP-404 Certified CWNP

CWNP CWAP-404 Exam Certification Details:

Sample Questions CWNP CWAP-404 Sample Questions
Passing Score 70%
Number of Questions 60
Exam Price $275 USD
Recommended Training CWAP self-paced training kit, Training Class

 

Q20. When performing protocol analysis, you notice a high number of RTS/CTS frames being transmitted on an HT network. You suspect this may be due to HT protection mechanisms. Where in the Beacon frame would you look to determine which one of the four HT protection modes the AP is operating in?

 
 
 
 

Q21. When would you expect to see a Reassociation Request frame’

 
 
 
 

Q22. What is the function of 802.11 Management frames?

 
 
 
 

Q23. In what scenario is Open Authentication without encryption not allowed based on the 802.11 standard?

 
 
 
 

Q24. How many frames make up the Group Key Handshake excluding any Ack frames that may be required?

 
 
 
 

Q25. 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?

 
 
 
 

Q26. After examining a Beacon frame decode you see the SSID Element has a length of 0. What do you conclude about this frame?

 
 
 
 

Q27. In a Spectrum Analyzer the Swept Spectrogram plot displays what information?

 
 
 
 

Q28. The PHY layer provides framing by adding a header to create what type of data unit?

 
 
 
 

Q29. You are analyzing a packet decode of a Probe Request and notice the SSID element has a length of zero. What do you conclude about the transmitting STA?

 
 
 
 

Q30. Which common feature of a Spectrum Analyzer would be the best to help you locate a non-802.11 interference source?

 
 
 
 

Q31. Which one of the following is not an 802.11 Management frame?

 
 
 
 

Q32. What should the To DS and From DS flags be to set to in an Association Response frame?

 
 
 
 

Q33. During a VHT Transmit Beamforming sounding exchange, the beamformee transmits a Compressed Beamforming frame to the beamformer. What is communicated within this Compressed Beamforming frame?

 
 
 
 

Q34. 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?

 
 
 
 

Q35. What is the default 802.11 authentication method for a STA when using Pre-RSNA?

 
 
 
 

Q36. Which one of the following should be the first step when troubleshooting a WLAN issue?

 
 
 
 

Q37. 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?

 
 
 
 

Q38. Why would a STA that supports 802.11k Radio Measurement send a Neighbor Request to an AP?

 
 
 
 

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
Validate BSS configuration through protocol analysis – Country code
– Minimum basic rate
– Supported rates and coding schemes
– Beacon interval
– WMM settings
– RSN settings
– HT/VHT/HE operations
– Channel width
– Primary channel
– Hidden or non-broadcast SSIDs

 

Free CWNP CWAP-404 Exam 2024 Practice Materials Collection: https://www.testbraindump.com/CWAP-404-exam-prep.html

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