The Avant-garde Guide To CWAP-403 Exam Price

NEW QUESTION 1
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 2
What is the function of 802.11 Management frames?

• A. Manage the BSS
• B. Manage the flow of data
• C. Communicate configuration changes between WLAN controller and APs
• D. Prioritize network administration traffic

Answer: C

NEW QUESTION 3
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 4
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 5
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 6
An RST frame should be acknowledged by which frame?

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

Answer: A

NEW QUESTION 7
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 8
Which one of the following is not a valid acknowledgment frame?

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

Answer: C

NEW QUESTION 9
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 10
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 11
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 12
What does the value of the Listen Interval field in an Association request frame indicate?

• A. How long a STA performing active scanning will listen for Probe Responses before changing channels
• B. How often a STA will go off channel to look for other BSSs
• C. How often a STA in power save mode wakes up to listen to Beacon frames
• D. How long a STA waits for an Ack before retransmitting the frame

Answer: C

Explanation:
how often a STA in power save mode wakes to listen to Beacon management frames.

NEW QUESTION 13
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 14
As a wireless network consultant you have been called in to troubleshoot a high-priority issue for one of your customers. The customer’s office is based on two floors within a multi-tenant office block. On one of these floors (floor 5) users cannot connect to the wireless network. During their own testing the customer has discovered that users can connect on floor 6 but not when they move to the floor 5. This issue is affecting all users on floor 5 and having a negative effect on productivity.
To troubleshoot this issue, you perform both Spectrum and Protocol Analysis. The Spectrum Analysis shows the presence of Bluetooth signals which you have identified as coming from wireless mice. In the protocol analyzer you see the top frame on the network is Deauthentication frames. On closer investigation you see that the Deauthentication frames’ source addresses match the BSSISs of your customers APs and the destination address is FF:FF:FF:FF:FF:FF:FF.
What do you conclude from this troubleshooting exercise?

• A. The customer should replace all their Bluetooth wireless mice as they are stopping the users on floor 5 from connecting to the wireless network
• B. The users on floor 5 are being subjected to a denial of service attack, as this is happening across the entire floor it is likely to be a misconfigured WIPS solution belonging to the tenants on the floor below
• C. The customers APs are misbehaving and a technical support case should be open with the vendor
• D. The CCI from the APs on the floor 4 is the problem and you need to ask the tenant below to turn down their AP’s Tx power

Answer: A

NEW QUESTION 15
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 16
......