The Updated Guide To CWAP-403 Simulations

NEW QUESTION 1
In which element of a Beacon frame would you look to identify the current HT protection mode in which an AP is operating?

• A. HT Capabilities Element
• B. HT Protection Element
• C. HT Information Element
• D. HT Operations Element

Answer: C

NEW QUESTION 2
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?

• A. Delta
• B. Absolute
• C. Roaming
• D. Relative

Answer: C

NEW QUESTION 3
Which one of the following is not an 802.11 Management frame?

• A. Action
• B. Authentication
• C. PS-Poll
• D. Beacon

Answer: C

NEW QUESTION 4
A PHY Header is added to the PSDU at which sub-layer?

• A. LLC
• B. MAC
• C. PLCP
• D. PMD

Answer: C

Explanation:
The PLCP adds a preamble and PHY header to the PSDU.

NEW QUESTION 5
When would you expect to see a Reassociation Request frame?

• A. Every time a STA associates to an AP to which it has previously been associated
• B. Only when a STA is using FT roaming
• C. Only when a STA roams back to an AP it has previously been associated with
• D. Every time a STA roams

Answer: D

NEW QUESTION 6
How is the length of an AIFS is calculated?

• A. AIFSN * Slot Time + SIFS
• B. SIFS * Slot Time + AIFSN
• C. DIFS + SIFS + AIFSN
• D. SIFS + AIFS * Time Unit

Answer: A

Explanation:
(or length) of an AIFS interval. AIFSN values are set for each access category, giving the AIFS
[AC] a shorter or longer duration, in accordance with the desired priority. This is demonstrated by the AIFS[AC]
formula:
AIFS[AC] = AIFSN[AC] × aSlotTime + aSIFSTime

NEW QUESTION 7
What is the function of the PHY Preamble?

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

Answer: B

NEW QUESTION 8
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?

• A. Look for gaps in the sequence number in MAC header
• B. Protocol Analyzers show the number of missing packets in their statistics view
• C. Retransmission are an indication of missing packets
• D. The missing packets will be shown as CRC errored packets

Answer: C

NEW QUESTION 9
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: B

NEW QUESTION 10
Which one of the following should be the first step when troubleshooting a WLAN issue?

• A. Identify capture locations
• B. Identify probable causes
• C. Perform an initial WLAN scan and see if any obvious issues stand out
• D. Define the problem

Answer: D

NEW QUESTION 11
Which piece of information Is not transmitted in an HT PDDU header?

• A. Number of Spatial Streams
• B. PPDU length
• C. Channel number
• D. MCS index

Answer: D

NEW QUESTION 12
Which one of the following is not a valid acknowledgment frame?

• A. RTS
• B. CTS
• C. Ack
• D. Block Ack

Answer: C

NEW QUESTION 13
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 AccessCategories

Answer: D

NEW QUESTION 14
Which common feature of a Spectrum Analyzer would be the best to help you locate a non-802.11 interference source?

• A. Max hold
• B. Location filter
• C. Waterfall plot
• D. Device finder

Answer: D

NEW QUESTION 15
Where, in a protocol analyzer, would you find an indication that a frame was transmitted as part of an AMPDU?

• A. The HT Operation Element
• B. A-MPDU flag in the HT Control Field
• C. A-MPDU flag in the Frame Control Field
• D. The Aggregation flag in the Radio Tap Header

Answer: B

NEW QUESTION 16
You have installed a new 802.11ac WLAN configured with 80 MHz channels. Users in one area are complaining about poor performance. This area is currently served by a single AP. You take a spectrum analysis capture in the poor performing areA. While examining the waterfall plot you notice the airtime
utilization is higher on the first 20 MHz of the 80 MHz channel when compared to the rest of the channel. What do you conclude?

• A. The AP is misconfigured and needs to be reconfigured to 80MHz operation
• B. RRM is enabled and has dynamically picked a 20 MHz channel
• C. The first 20 MHz is the AP’s primary channel and higher airtime utilization on the primary channel is normal when an AP Is configured for 80 MHz operation
• D. Non Wi-Fi interference is preventing the APs 80 MHz operation

Answer: C

NEW QUESTION 17
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. 54 Mbps
• B. 6 Mbps
• C. 86.7 Mbps
• D. 78 Mbps

Answer: B

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).

NEW QUESTION 18
What is the formula used to calculate the Duration field value in an RTS frame?

• A. RTS Duration field = CTS duration
• B. RTS Duration field = Data or management to be sent frame duration
• C. RTS Duration field = Data or management frame to be sent duration + CTS duration + one ACK duration + three SIFS
• D. RTS Duration field = Data or management frame to be sent duration + CTS duration

Answer: C

NEW QUESTION 19
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