Free PDF CWNP - CWAP-404 Authoritative Valid Exam Dumps

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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%

CWNP CWAP-404 Exam Certification Details:

Number of Questions	60
Exam Registration	PEARSON VUE
Sample Questions	CWNP CWAP-404 Sample Questions
Recommended Training	CWAP self-paced training kit, Training Class
Exam Price	$275 USD
Exam Code	CWAP-404 CWAP
Duration	90 minutes
Exam Name	Wireless Analysis Professional

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CWNP Certified Wireless Analysis Professional Sample Questions (Q67-Q72):

NEW QUESTION # 67
When configuring a long term, forensic packet capture and saving all packets to disk which of the following is not a consideration?

A. Total capture storage space
B. Individual trace file size
C. Real-time packet decodes
D. Analyzer location

Answer: C

Explanation:
Real-time packet decodes are not a consideration when configuring a long-term, forensic packet capture and saving all packets to disk. Real-time packet decodes are useful for live analysis and troubleshooting, but they consume CPU and memory resources that could affect the performance of the capture process. For a long-term, forensic packet capture, it is more important to consider the analyzer location, the total capture storage space, and the individual trace file size. These factors affect the quality and quantity of the captured packets and the ease of post-capture analysis.

NEW QUESTION # 68
Where would you look in a packet trace file to identify the configured Minimum Basic Rate (MBR) of a BSS?

A. In the MBR Information Element in an Association Response frame
B. In the Minimum Basic Rate Element in a Beacon frame
C. Supported Rates & Extended Supported Rates elements in a Beacon frame
D. In the MBR Action frame

Answer: C

Explanation:
The configured Minimum Basic Rate (MBR) of a BSS can be identified by looking at the Supported Rates and Extended Supported Rates elements in a Beacon frame. A Beacon frame is a type of management frame that is transmitted by an AP to advertise its presence and capabilities to potential clients. A Beacon frame contains various information elements (IEs) that provide details about the BSS configuration and operation. The Supported Rates and Extended Supported Rates IEs list the data rates that are supported by the AP for data transmission. The MBR is the lowest data rate among these supported rates that is required for all clients to join and communicate with the BSS. The MBR is usually marked with a flag bit in these IEs to indicate its mandatory status. The other options are not correct, as they do not exist or do not indicate the MBR of a BSS.

NEW QUESTION # 69
Which one of the following portions of information is communicated by bits in the PHY Header?

A. Data rate
B. Signal strength
C. Noise
D. SNR

Answer: A

Explanation:
Explanation
One of the information that is communicated by bits in the PHY header is data rate. Data rate is the speed at which data is transmitted or received over the wireless medium. Data rate depends on factors such as modulation, coding, channel width, spatial streams, and guard interval. Data rate is indicated by bits in different fields of the PHY header, depending on the type of PPDU (e.g., OFDM, HT, VHT, HE). The receiver uses these bits to determine how to decode and demodulate the rest of the PPDU. The other options are not correct, as they are not communicated by bits in the PHY header. SNR (Signal-to-Noise Ratio), noise, and signal strengthare measured by the receiver based on its own capabilities and environment. References: [Wireless Analysis Professional Study Guide CWAP-404], Chapter 4: 802.11 Physical Layer, page 101-105

NEW QUESTION # 70
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. 78 Mbps
B. 54 Mbps
C. 6 Mbps
D. 86.7 Mbps

Answer: C

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 # 71
In a Spectrum Analyzer the Swept Spectrogram plot displays what information?

A. Wi-Fi Device information
B. RF power present at a particular frequency over the course of time
C. The RF time domain
D. Duty cycle in the frequency 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.

NEW QUESTION # 72
......

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FREE PDF CWNP - CWAP-404 AUTHORITATIVE VALID EXAM DUMPS

Free PDF CWNP - CWAP-404 Authoritative Valid Exam Dumps