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最受歡迎的CWAP-404認證資料，免費下載CWAP-404學習資料幫助妳通過CWAP-404考試

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>> CWAP-404認證資料 <<

CWNP CWAP-404認證資料 |第一次嘗試輕鬆學習並通過考試CWAP-404：Certified Wireless Analysis Professional

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CWNP CWAP-404 考試大綱：

主題
簡介

主題 1

WLAN Medium Access: The exam evaluates the understanding of a wireless network professional about 802.11 contention algorithms and their impact on WLAN performance. The CWAP-404 exam requires candidates to analyze QoS configurations and operations.

主題 2

Frame Exchanges: The topic evaluates the skills of a wireless network professional in capturing, understanding, and analyzing various frame exchanges, including BSS discovery, joining, roaming, and data frames. The CWAP-404 exam targets the ability of candidates to troubleshoot and resolve issues related to MAC layer operations, ensuring they can maintain robust and efficient WLAN communications.

主題 3

Protocol Analysis: The topic in the CWNP CWAP-404 exam evaluates the skill of a wireless network professional to capture and analyze 802.11 frames effectively. Candidates must demonstrate proficiency in configuring protocol analysis tools, interpreting frame captures to diagnose issues, and applying appropriate troubleshooting methods.

主題 4

Spectrum Analysis: The topic assesses the ability of a wireless network professional to capture and interpret RF spectrum data. The exam targets the skills in identifying device signatures and RF issues through spectrum analyzers.

最新的 CWAP Wi-Fi Analysis CWAP-404 免費考試真題 (Q22-Q27):

問題 #22
What is the default 802.11 authentication method for a STA when using Pre-RSNA?

A. Shared Key
B. 4-Way Handshake
C. Open System
D. PSK

答案：C

解題說明：
The default 802.11 authentication method for a STA when using Pre-RSNA is Open System. This is the simplest and most common authentication method, which does not provide any security or encryption. In Open System authentication, the STA sends an Authentication Request frame to the AP, and the AP responds with an Authentication Response frame with a status code of success. After this, the STA can proceed to association with the AP.

問題 #23
What is the difference between a Data frame and a QoS-Data frame?

A. QoS Data frames include a DSCP control field
B. QoS Data frames include a QoS information element
C. QoS Data frames include a QoS control field
D. QoS Data frames include an 802.1Q VLAN tag

答案：C

解題說明：
The difference between a Data frame and a QoS-Data frame is that QoS Data frames include a QoS control field. A Data frame is a type of data frame that is used to carry user data or upper layer protocol data between STAs and APs. A QoS Data frame is a type of data frame that is used to carry user data or upper layer protocol data between STAs and APs that support QoS (Quality of Service) features. QoS features allow different types of traffic to be prioritized and handled differently according to their QoS requirements, such as delay, jitter, throughput, etc.
QoS Data frames include a QoS control field in their MAC header, which contains information such as traffic identifier (TID), queue size (TXOP), acknowledgment policy (ACK), etc., that are used for QoS purposes. The other options are not correct, as they do not describe the difference between Data and QoS Data frames.
QoS Data frames do not include a DSCP (Differentiated Services Code Point) control field, which is part of the IP header in the network layer, not the MAC header in the data link layer. QoS Data frames do not include a QoS information element (IE), which is part of some management frames that indicate QoS capabilities or parameters, not data frames. QoS Data frames do not include an
802.1Q VLAN tag, which is part of some Ethernet frames that indicate VLAN membership or priority, not wireless frames.

問題 #24
Which one of the following portions of information is communicated in the PHY Header?

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

答案：D

解題說明：
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 strength are measured by the receiver based on its own capabilities and environment.

問題 #25
You are evaluating a protocol capture file in Wireshark.
The following filter is applied:
wlan_radio.11ac.bandwidth - - 4
What kind of frames are displayed?

A. Only frames supporting 4 radio chains
B. Only frames supporting 4 spatial streams
C. Only 80 MHz frames
D. Only 40 MHz frames

答案：C

解題說明：
https://www.cwnp.com/forums/posts?wlan_radio.11ac.bandwidth-definition-124380

問題 #26
802.11k Neighbor Requests and Neighbor Reports are sent in what type of Management Frames?

A. Reassociation Request and Reassociation Response
B. RRM
C. Beacon
D. Action

答案：D

解題說明：
Explanation
802.11k Neighbor Requests and Neighbor Reports are sent in Action frames. An Action frame is a Management frame that is used to perform various operations or functions related to the operation or maintenance of a wireless network. An Action frame consists of a Category field that indicates the type of action being performed, and a variable-length Action Details field that contains specific information related to the action. For example, an Action frame with a Category field value of 5 indicates a Radio Measurement action, and the Action Details field may contain a Neighbor Request or a Neighbor Report subelement .
References: CWAP-404 CertifiedWireless Analysis Professional Study and Reference Guide, Chapter 6: MAC Sublayer Frame Exchanges, page 207; CWAP-404 Certified Wireless Analysis Professional Study and Reference Guide, Chapter 6: MAC Sublayer Frame Exchanges, page 208; CWAP-404 Certified Wireless Analysis Professional Study and Reference Guide, Chapter 12: 802.11k/v/r/u/w/ai Amendments, page 434.

問題 #27
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CWAP-404考試心得: https://www.kaoguti.com/CWAP-404_exam-pdf.html