PW0-250 Exam Questions & Answers

Exam Code: PW0-250

Exam Name: Certified Wireless Design Professional (CWDP)

Updated: Mar 09, 2024

Q&As: 65

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Practice These Free Questions and Answers to Pass the CWDP Certifications Exam

Questions 1

When a WLAN controller transmits an Ethernet frame that has an IEEE 802.11 frame as its payload to a lightweight AP, what type of QoS marks can be applied to the Ethernet frame and/or its payload? (Choose 3)

A. IEEE 802.1Q PCP marks in the Ethernet frame header

B. User Priority marks in the IEEE 802.11 frame header

C. Throughput subscription marks in the Ethernet frame header

D. MPLS tags from the Label Edge Router (LER)

E. DSCP marks to the ToS bits in the encapsulating IP packet header

F. RSVP tag if RTP is the payload of the IEEE 802.11 frame

Show Answer
Questions 2

What is a radome?

A. A type of semi-circular ceiling found in atriums and that is a heavy cause of RF reflection.

B. A weatherproof piece of plastic covering an antenna or antenna system.

C. The unit used to measure the signal reflected backward by the end of a cable.

D. A piece of metal positioned behind APs mounted on outdoor poles, designed to limit the butterfly effect.

E. The unwanted signal coverage provided by either side or back lobes in directional antennas.

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Questions 3

What RF math formula should be used to convert an RF value in units of dBm into a value of mW?

*NotE. "dBm" in the formulas represents the known dBm value

A. mW 10(dBm/10)

B. mW

C. mW

D. mW

E. mW

F. mW =

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Questions 4

Given: You are evaluating the theoretical and real-world RF gain benefits of transmit and receive features introduced by 802.11n with MIMO. This exercise allows you to quantify the feature's value in a real-world environment.

What is the maximum theoretical signal gain of chip-based TxBF and MRC (as features) when compared to the same AP using only a single antenna for transmit and receive (effectively simulating a 1x1 chip)?

A. 2 Rx or Tx chains = 3 dBi gain 3 Rx or Tx chains = approx 5 dBi gain 4 Rx or Tx chains = 6 dBi gain

B. 2 Rx or Tx chains = 1 dBi gain 3 Rx or Tx chains = 2 dBi gain 4 Rx or Tx chains = 3 dBi gain

C. 2 Rx or Tx chains = 3 dBi gain 3 Rx or Tx chains = 6 dBi gain 4 Rx or Tx chains = 9 dBi gain

D. 2 Rx or Tx chains = approx 4-6.5 dBi gain 3 Rx or Tx chains = approx 7-10 dBi gain 4 Rx or Tx chains = approx 10-12 dBi gain

E. The theoretical gains offered by each additional radio are different for TxBF and MRC.

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Questions 5

Given: In a site survey deliverable report, you are expected to explain the spectrum measurements taken at the customer's site. The exhibit shows a representative sample capture of the RF environment at one of the customer sites.

What best explains the data presented in this exhibit?

A. The Real Time FFT chart shows a high noise floor across the entire 2.4 GHz band.

B. Channel 1 is being heavily utilized by Wi-Fi and channel 11 also has some moderate Wi-Fi activity.

C. As indicated by the data in the Active Devices list, the spectrum analysis chipset is also reporting 802.11 information.

D. Although some access points are present in a nearby area, they are not being heavily used.

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