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Online CWAP-403 free questions and answers of New Version:
NEW QUESTION 1
Finish the statement. It is possible to distinguish between _____ and _______ 20 MHz transmissions when looking at an FFT plot.
- A. HR/DSSS and ERP
- B. ERP and VHT
- C. HT and VHT
- D. OFDM and HT
Answer: C
NEW QUESTION 2
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 3
The PLCP sublayer provides framing by adding a header to create what type of data unit?
- A. MSDU
- B. MPDU
- C. PSDU
- D. PPDU
Answer: D
NEW QUESTION 4
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 transmitted?
- A. Only the data frame which was corrupted
- B. Both the corrupted data and Block Ack
- C. All data frames
- D. Only the Block Ack
Answer: D
NEW QUESTION 5
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 6
You are analyzing a packet decode of a Probe Request and notice the SSID element has a length of zero. What do you conclude about transmitting STA?
- A. The WLAN adaptor is configured in promiscuous mode
- B. The STA is operating in Ad-Hoc mode
- C. The STA’s WLAN adaptor is disabled
- D. The STA is discovering a list of available BSSs
Answer: B
NEW QUESTION 7
Which one of the following is not a valid reason for an AP to fail a STAs association?
- A. Requesting station has the wrong PSK
- B. Does not support the specified authentication algorithm
- C. AP is unable to handle additional associations
- D. Requesting station does not support all the required data rates
Answer: A
NEW QUESTION 8
The network administrator at ABC Engineering has taken a large packet capture from one of their APs running in monitor mode. She has very little knowledge of 802.11 protocols but would like to use the capture file to evaluate the overall health and performance of their wireless network. When she asks your advice, which tool do you recommend she opens the packet capture file with?
- A. Capture visualization tool
- B. Protocol analyzer
- C. Spectrum analyzer
- D. WLAN scanner
Answer: B
NEW QUESTION 9
Prior to a retransmission what happens to the CWmax value?
- A. Reset to 0
- B. Doubles and increases by 1
- C. Increases by 1
- D. Set to the value of the AIFSN
Answer: B
NEW QUESTION 10
When performing protocol analysis, you notice a high number of RTS/CTS frames being transmitted on an HT network. You suspect this may be due to HT protection mechanisms. Where in the Beacon frame would you look to determine which one of the four HT protection modes the AP is operating in?
- A. HT Protection Element
- B. HT Information Element
- C. HT Operation Element
- D. Non-HT Present Element
Answer: A
NEW QUESTION 11
Which one of the following portions of information is communicated in the PHY Header?
- A. Signal strength
- B. Date rate
- C. SNR
- D. Noise
Answer: D
NEW QUESTION 12
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 13
How does a VoIP Phone, using WMM Power Save, request data frames buffered at the AP?
- A. The VoIP phone transmits a PS-Poll frame
- B. The VoIP phone transmits a trigger frame
- C. The VoIP phone sets the More Data bit in the MAC Header to 1
- D. The VoIP phone The VoIP transmits a WMM Action frame
Answer: B
NEW QUESTION 14
When a data frame is encrypted with WPA2, to which portion of the frame is the encryption applied?
- A. Frame body excluding the LLC
- B. Frame body including the LLC
- C. Frame body and MAC Header
- D. The whole MPDU
Answer: C
NEW QUESTION 15
Given a protocol analyzer can decrypt WPA2-PSK data packets providing the PSK and SSID are configured in the analyzer software.
When performing packet capture (in a non-FT environment) which frames are required in order for PSK frame decryption to be possible?
- A. Authentication
- B. Reassociation
- C. 4-Way Handshake
- D. Probe Response
Answer: C
NEW QUESTION 16
What is the default 802.11 authentication method for a STA when using Pre-RSNA?
- A. Open System
- B. Shared Key
- C. 4-Way Handshake
- D. PSK
Answer: A
NEW QUESTION 17
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 18
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 19
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 20
Which one of the following is required for Wi-Fi integration in laptop-based Spectrum Analyzer software?
- A. A supported WLAN adaptor with a customized driver
- B. Any 802.11 wireless adaptor
- C. A dual radio spectrum analyzer card
- D. SNMP read credentials to the WLAN controller or APs
Answer: C
NEW QUESTION 21
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 22
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. Talk to the end users about their experiences
- C. Observe the problem
- D. Obtain detailed knowledge of the wireless vendors debug and logging options
Answer: C
NEW QUESTION 23
Which one of the statements regarding the Frame Control field in an 802.11 MAC header is true?
- A. Only Control frames have a Frame Control field
- B. The Frame Control field contains three sub-fields and eight one-bit flags
- C. The Frame Control field is used to communicate the duration value
- D. The Frame Control field is always set to 0
Answer: D
Explanation:
This field is simply used to indicate which protocol version of 802.11 is being used by the frame. This is always set to “0”
NEW QUESTION 24
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 25
Given: The Frame Check Sequence (FCS) is a 32 CRC used for error detection. The CRC is calculated over what?
- A. Frame Body only
- B. Mac Header and Frame Body only
- C. PHY Header, MAC Header and Frame Body
- D. PHY Header and MAC Header only
Answer: B
NEW QUESTION 26
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