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CWNP CWAP-404 BY USING CWAP-404 EXAM QUESTIONS

Passing an Certified Wireless Analysis Professional exam on the first attempt can be stressful, but CWNP CWAP-404 exam questions can help manage stress and allow you to perform at your best. We at PremiumVCEDump give you the techniques and resources to make sure you get the most out of your exam study. We provide preparation material for the Certified Wireless Analysis Professional exam that will guide you when you sit to study for it. CWAP-404 updated questions give you enough confidence to sit for the CWNP exam.

CWNP CWAP-404 Exam Certification Details:

Exam Registration
PEARSON VUE

Exam Price
$275 USD

Exam Name
Wireless Analysis Professional

Duration
90 minutes

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CWAP-404 Training Tools | Latest CWAP-404 Training

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CWNP Certified Wireless Analysis Professional Sample Questions (Q118-Q123):

NEW QUESTION # 118
What is the function of the PHY Preamble?

A. Allows the receiver to detect and synchronize with the signal
B. Carries the NDP used in Transmit Beamforming and MU-MIMO
C. To terminate a conversation between transmitter and receiver
D. To set the modulation method for the MPDU

Answer: A

Explanation:
The function of the PHY preamble is to allow the receiver to detect and synchronize with the signal. 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 adjust its parameters, such as frequency, timing, and gain, to match the incoming signal. The PHY preamble also helps the receiver to estimate the channel conditions and noise level.

NEW QUESTION # 119
What is the function of the PMD sub-layer?

A. Converts 1s and 0s given to it by the PLCP sub-layer into the appropriate RF signals
B. Provides framing
C. Adds a PHY preamble and header to a PSDU
D. Performs A-MPDU

Answer: A

NEW QUESTION # 120
You are concerned with management overhead in your WLAN. When evaluating the network, you note that each dual-band AP provides for 4 SSIDs in each band with three secure SSIDs and one Open System SSID. The network runs only 802.11ac APs and uses 20 MHz channels in 2.4 GHz and 400 MHz channels in 5 GHz.
What can you do to reduce the impact of beacon frames on CCI and channel utilization?

A. Increase the beacon interval
B. Use only 40 MHz channels
C. Disable SSID broadcasting
D. Use the same security across all SSIDs

Answer: C

NEW QUESTION # 121
What is an AIFS?

A. A form of aggregation performed at the PLCP sub-layer
B. The shortest period of time a STA can sleep
C. A medium access method introduced by 802.11n, but never implemented
D. A variable Interframe Space introduced by 802.11e to help prioritize medium access for different Access Categories

Answer: D

Explanation:
An AIFS is a variable interframe space introduced by 802.11e to help prioritize medium access for different Access Categories (ACs). An interframe space is a period of time that a STA (station) has to wait before attempting to access the medium. An AIFS is a type of interframe space that varies depending on the AC of the traffic. An AC is a logical queue that corresponds to a QoS (Quality of Service) level for different types of traffic. There are four ACs defined by 802.11e:
AC_VO (Voice), AC_VI (Video), AC_BE (Best Effort), and AC_BK (Background). Each AC has a different AIFSN (Arbitration Interframe Space Number) value, which determines how long it has to wait before attempting to access the medium. A lower AIFSN value means a higher priority and a shorter waiting time. The other options are not correct, as they do not describe what an AIFS is.
An AIFS is not a medium access method introduced by 802.11n, but never implemented, as it is part of the 802.11e standard and widely used in QoS-enabled WLANs. An AIFS is not a form of aggregation performed at the PHY layer based on 802.11e UP values interpreted from DSCP values, as aggregation is a technique that combines multiple frames into one larger frame to improve efficiency and throughput, not prioritization or medium access. An AIFS is not the shortest period of time a STA can sleep, as sleeping is a power saving mode that allows a STA to conserve battery power by periodically turning off its radio, not accessing the medium.

NEW QUESTION # 122
A client is operating in an unstable RF environment. Out of five data frames transmitted to the client it only receives four. The client sends a Block Ack to acknowledge the receipt of these four frames but due to frame corruption the Block Ack is not received by the AP. Which frames will be retransmitted'

A. Both the corrupted data and Block Ack
B. Only the Block Ack
C. All data frames
D. Only the data frame which was corrupted

Answer: C

Explanation:
Explanation
All data frames will be retransmitted in this scenario. This is because the AP uses a Block Ack (BA) mechanism to acknowledge the receipt of multiple data frames from a client in a single frame. The BA contains a bitmap that indicates which data frames were received correctly and which were not. If the BA is not received by the AP due to frame corruption, the AP will assume that none of the data frames were received by the client and will retransmit all of them. The other options are not correct, as they do not account for the loss of the BA or the use of the bitmap. References: [Wireless Analysis Professional Study Guide CWAP-404], Chapter 6: 802.11 Frame Exchanges, page 167-168

NEW QUESTION # 123
......

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Ted Tate Ted Tate

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