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CWNP CWAP-405 Exam Syllabus Topics:

Section	Weight	Objectives
Protocol Analysis Tools and Methodologies	15%	- Troubleshooting methodologies and capture safety 1. Isolate protocol analyzer drop counts during heavy file transfers 2. Apply disciplined network diagnostic isolation lifecycles - WLAN analyzer architectures and placement configurations 1. Analyze hardware timestamp methods to minimize processing delays 2. Implement multi-channel packet aggregators 3. Configure local and remote frame capture adapters
WLAN Medium Access	10%	- Contention algorithms and wireless scheduling parameters 1. Analyze DCF mechanics, carrier sensing, and backoff timers 2. Evaluate EDCA parameters, access categories, and TXOP duration limits
802.11 Operation and Frame Exchanges	40%	- Control plane handshakes and transmission recovery operations 1. Analyze RTS/CTS protection rules and standard ACK frame transmissions 2. Evaluate Block ACK session initialization and bitmap tracking loops - Management sublayer protocols and connectivity lifecycles 1. Analyze beaconing, multi-BSSID profiles, and probe exchange sequences 2. Evaluate 802.11 power save operational states and timeline markers 3. Trace authentication, association, and multi-tier roaming handshakes - Security framework verification and encryption tracking 1. Deconstruct WPA3, SAE, and 4-way handshake key exchanges 2. Trace 802.1X/EAP authentication phase transitions
Spectrum Analysis Tools and Methodologies	15%	- Non-802.11 interference isolation and signature tracking 1. Identify signatures of Bluetooth, microwave ovens, and analog video systems 2. Analyze duty cycle measurements to evaluate active airtime constraints - Spectrum analyzer configuration parameters and visualization layouts 1. Configure sweeping rules, RBW controls, and span baselines 2. Interpret real-time FFT graphs, waterfall logs, and persistence charts
802.11 Frame Formats and Technologies	20%	- MAC sublayer encapsulation and frame structural components 1. Evaluate A-MPDU and A-MSDU frame aggregation structures 2. Deconstruct MAC header fields, duration IDs, and sequence controls - Physical Layer (PHY) header mechanics and encoding structures 1. Decode training fields, signal fields, and preamble formats 2. Analyze PHY metrics including HE, EHT, and VHT configuration nodes

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CWNP Certified Wireless Analysis Professional Sample Questions (Q76-Q81):

NEW QUESTION # 76
Given: The Frame Check Sequence (FCS) is a 32 CRC used for error detection.
The CRC is calculated over what?

A. PHY Header, MAC Header and Frame Body
B. Mac Header and Frame Body only
C. Frame Body only
D. PHY Header and Mac Header only

Answer: B

Explanation:
The CRC is calculated over the MAC Header and Frame Body only. The CRC (Cyclic Redundancy Check) is a 32-bit value that is used for error detection in wireless transmissions. The CRC is calculated over the MAC Header and Frame Body of a PSDU, which are the parts of the data unit that contain information such as source and destination addresses, frame type, frame control, sequence number, payload, etc. The CRC is appended to the end of the PSDU as a FCS (Frame Check Sequence) field. The CRC is not calculated over the PHY Header or PHY Preamble, which are parts of the PPDU that contain information such as modulation, coding, data rate, etc. The PHY Header and PHY Preamble are added or removed by the PHY layer during the conversion between PSDU and PPDU. References: [Wireless Analysis Professional Study Guide CWAP-
405], Chapter 4: 802.11 Physical Layer, page 97-98

NEW QUESTION # 77
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. Talk to the end users about their experiences
D. Obtain detailed -knowledge of the wireless vendors debug and logging options

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 problem12 References:
* CWAP-405Study Guide, Chapter 1: Troubleshooting Methodology, page 15
* CWAP-405Objectives, Section 1.2: Observe the problem

NEW QUESTION # 78
When performing protocol analysis, you capture an 802.1 lac data frame on channel 52, transmitted at MCS 8.
At what data rate was the PHY Preamble transmitted?

A. 86.7 Mbps
B. 78 Mbps
C. 54 Mbps
D. 6 Mbps

Answer: D

Explanation:
The data rate at which the PHY preamble was transmitted is 6 Mbps. The PHY preamble is a part of the PPDU that is transmitted before the PHY header and the PSDU. The PHY preamble consists of a series of training fields that help the receiver to detect and synchronize with the signal. The PHY preamble is always transmitted at a fixed data rate that depends on the type of PPDU (e.g., OFDM, HT, VHT, HE). For an 802.1 lac data frame on channel 52, which uses VHT PPDUs, the data rate for the PHY preamble is 6 Mbps. This data rate does not depend on MCS (Modulation and Coding Scheme), which only affects the data rate for the PSDU. References: [Wireless Analysis Professional Study Guide CWAP-405], Chapter 4: 802.11 Physical Layer, page 99-100

NEW QUESTION # 79
Which statement accurately describes IEEE 802.11 Power Save operation in a Basic Service Set that does not support the QoS facility?

A. After waking at a scheduled TBTT, client stations send Null Function frames to the access point with the Power Management bit set back to zero.
B. Upon receiving traffic for a dozing station, the access point wakes the client station using a PS- Poll frame so that the client station can receive the data.
C. When the access point's buffer is full, the access point wakes all client stations using a PS-Poll frame so that they can receive the data.
D. Following a period of time in a low power state, client stations wake themselves and automatically poll the access point for traffic using a PS-Poll frame.
E. After waking from a low power state, client stations listen for the next Beacon to determine if sending a PS-Poll frame to the access point is necessary.

Answer: E

NEW QUESTION # 80
A STAs Network Allocation Vector (NAV) is updated by which field in RTS and CTS frames?

A. NAV
B. Duration
C. Timestamp
D. Length

Answer: B

Explanation:
The Duration field in RTS and CTS frames specifies the amount of time the medium will be reserved for the ensuing transmission. Other STAs use this value to update their Network Allocation Vector (NAV) to avoid transmitting during that period.

NEW QUESTION # 81
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