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2021 Nov CWDP-302 vce
Q1. You are tasked with designing the WLAN to accommodate certain high density areas on your university campus where users frequently come and go. With a limited DHCP pool size (subnet mask = 255.255.252.0) for this WLAN subnet, you want to ensure that your DHCP addresses are used efficiently and are not exhausted, which would prevent new client Layer 3 connections. The DHCP server is a Windows Server 2012 R2 machine. Your design task is to determine the best configuration to allow as many users as possible while avoiding WLAN service interruptions and also to use the available addresses as efficiently as possible.
What setting would be most effectiveat achieving this design task?
A. Set the RTS threshold to 2346 bytes
B. Set the inactive wireless client timeout (client age-out) to 5 minutes
C. Set the maximum client limit per radio to 64
D. Set the DHCP lease for this pool to 20 minutes
Answer: D
Q2. When deploying long-distance 802.11 bridge links (10 miles / 16 km), what parameter may be critical for improving data flow by reducing retries caused by the long distances?
A. The sequence control field value
B. The acknowledgement timeout threshold
C. The minimum transmit data rate value
D. The CTS-to-self threshold
Answer: B
Q3. You are site surveying a network for VoWiFi. You have positioned an AP for a manual survey and are moving away from the AP with a phone in Survey Mode in your hand and you are reading the RSSI value of the signal received from the AP. You have previously determined that the noise floor was approximately -94 dBm on this floor of the building. The phone’s documentation does not specify a recommended RSSI orSNR value for best performance.
Based on the information provided and the type of device (VoWiFi phone) you are deploying, what minimum RSSI should you plan for in all areas you are monitoring and where VoWiFi service is desired?
A. – 75 dBm
B. – 72 dBm
C. – 67 dBm
D. – 62 dBm
Answer: C
Q4. You have determined the best mounting locations for APs in a given installation. The facilities manager has asked you to change the locations for several APs due to aesthetic concerns. You suggest mounting the APs in the ideal locations and painting them so they go unnoticed in the environment.
What is a valid recommendation or consideration when painting APs?
A. Always use paints with metallic dye in them to prevent potential RF propagation impact.
B. Painting APs will significantly reduce the output power.
C. Painting APs may void the product manufacturer’s warranty.
D. Most AP models for indoor environments come in a variety of form factors and colors. Painting is never recommended.
Answer: C
Q5. What is the purpose of Friis transmission equation [ (LdB) = 20 log(d) + 20 log (f) - 27.55 ]?
A. Calculate earth bulge to determine minimum antenna height
B. Calculate receive sensitivity for an 802.11 radio/antenna pair
C. Calculate RF path loss in free space
D. Calculate the loss experienced between the intentional radiator and antenna
Answer: C
Far out CWDP-302 study guide:
Q6. What is the DSCP Per Hop Behavior equivalent classification of the 802.11 AC_VO priority level?
A. AF31
B. CS3
C. VO
D. EF
Answer: D
Q7. When implementing WLAN security according to common best practices, what feature should be enabled when configuring an EAP type?
A. The “Use WEP if RADIUS server unavailable” option
B. The “Validate server certificate” option C. The “Trusted Root Certification Authorities” list
D. The “Do not prompt user to authorize new servers or trusted certification authorities” option
Answer: B
Q8. You desire to achieve a 450 Mbps MCS. What 802.11n features (from the numbered list below) are required?
1. Frame aggregation
2. Short GI
3. 40 MHz channels
4. 2 spatial streams
5. 3 spatial streams
6. Transmit beamforming (TxBF)
A. 2,3,2
B. 1, 2, 3, 5
C. 1, 2, 3, 4, 6
D. 2,3,5
Answer: D
Q9. In a PC-based spectrum analyzer, what data chart identifies the overall RF utilization of a specific frequency in the environment being surveyed?
A. FFT Max Hold
B. FFT Average
C. Swept Spectrogram
D. Duty cycle
Answer: D
Q10. You told your customer that multipath fading may be mitigated simply by moving one or both of the receiver’s antennas a small amount, usually by one to four wavelengths away from its original position. Your customer is prepared to make the change, but does not know the wavelength for 802.11ac.
What is the approximate wavelength of an 802.11ac radio wave?
A. 5.5 cm (2.16 inches)
B. 12 cm (4.72 inches)
C. 15.24 cm (6 inches)
D. 45 cm (17.71 inches)
Answer: A