CWNP CWNP Certifications CWDP-304 Questions & Answers

• Question 21:

  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

  Correct Answer: D

• Question 22:

  Assume that your network operates in a regulatory domain that allows use of the entire 5 GHz space allowed in the 802.11ac amendment. In your upcoming 802.11ac deployment, you would like to take advantage of the performance improvements that result from channel bonding. However, after extensive testing, you have determined that your mission-critical WLAN should not use channels requiring DFS support.

  Given those two criteria (enable channel bonding and disable DFS channels), in the 5 GHz spectrum, how many non-overlapping 40 MHz channels will your system be able to use?

  A. 2

  B. 3

  C. 4

  D. 6

  Correct Answer: C

• Question 23:

  What are the two types of WLAN discovery/scanning? Response:

  A. Manual

  B. Hidden

  C. Active

  D. Passive

  E. Probe

  F. Automatic

  Correct Answer: CD

• Question 24:

  An engineering firm just upgraded their WLAN form nine 802.11n APS to nine 802.11ac APs. After this upgrade, they did not see any improvement in throughput. What is the most likely cause of this result?

  A. APs are transmitting at a low transmit power

  B. The clients were not upgraded

  C. APs are mounted on the wall

  D. The APs are still using the 5 GHz lower band

  Correct Answer: B

• Question 25:

  One of your warehouse customers called you reporting problems with their WLAN in some locations that you designed and installed over a year ago. What should be one of your first considerations for your line of questioning? Response:

  A. DHCP lease exhaustion

  B. Changes in receive gain

  C. Inventory changes

  D. Rogue APs from neighbors

  Correct Answer: C

• Question 26:

  ABC Manufacturing has a heavily-used dual-band (2.4 / 5 GHz) WLAN, but sporadic RF interference across the 2.4 GHz band is causing dropped VoWiFi calls and leading to data connectivity and throughput problems. In addition to avoiding 2.4 GHz channels and installing a distributed spectrum analyzer to locate RF interference sources, what should the implementer do to resolve the problem fully?

  A. Have only guest access on the 5 GHz channels.

  B. Move all corporate data clients and VoWiFi devices to the 5 GHz channels appropriate for their regulatory domain.

  C. Use captive portals for guest authentication in 5 GHz.

  D. Implement WPA-PSK everywhere in the network.

  Correct Answer: B

• Question 27:

  Location technology (RTLS) can use which of the following methods?(Choose all that apply.)

  Response:

  A. Sound

  B. 802.11-capable laptops

  C. Active RFID

  D. Infrared

  E. UHV

  F. UWB

  G. Passive RFID

  Correct Answer: ABCD

• Question 28:

  What is the meaning of a Real Time FFT graph?

  A. Real Time FFT means Real Time First Fundamental Trace and shows the value of the first signal detected on each frequency at each sweep interval.

  B. Real Time FFT means Real Time Fast Frequency Timing and shows the RF pulsesmeasured by the Layer 1 sweep tool.

  C. Real Time FFT means Real Time Fast Fourier Transform and shows the max value of the signal detected on each frequency in real time.

  D. Real Time FFT means Real Time Frequency Fundamental Texture and shows the value of the noise background generated by the card used to perform the

  E. Real Time FFT means Real Time Fast Fourier Transform and shows the max value of the signal detected on each frequency in real time.

  Correct Answer: C

• Question 29:

  What operational plane would a WNMS primarily interact with?

  Response:

  A. Integration

  B. Management

  C. Control

  D. Data

  E. Distribution

  Correct Answer: B

• Question 30:

  As a device starts to shift to lower PHY rates, what factors usually influence a device decision to shift to lower PHY rates?(Choose all that apply.)

  A. Signal degradation

  B. Packet loss

  C. Interference

  D. Retransmissions

  Correct Answer: ABCD