CWNP PW0-250 Actual Free Exam Questions & Community Discussion

Exam Code/Number: PW0-250
Exam Name/Title: Certified Wireless Design Professional (CWDP)
Certification Provider: CWNP
Corresponding Certification: CWDP Certifications

Exam Questions: 60
Updated On: May 28, 2026

Question #13

When preparing a floor plan graphic for use in predictive and manual site surveying, what calibration method will lead to the most accurate and reliable RF data?

A. Use the known size of a small object, such as a ceiling tile, and use a single instance of this object (e.g. a single ceiling tile) to scale the floor plan.

B. Measure the width of an actual office doorway with a tape measure and use this value to calibrate against a doorway graphic.

C. Calibrate the ceiling height of the floor plan first, then the survey software should be able to auto-calibrate the X and Y planes of the graphic.

D. Use the longest available measurement (like a straight exterior wall) to calibrate the graphic's scale.

E. With properly formatted .bmp and .png graphics, the site survey software should be able to extract the scale directly from the graphic data during import.

Discussion 0

Correct Answer: D Vote an answer

Question #14

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 the loss experienced between the intentional radiator and antenna

C. Calculate receive sensitivity for an 802.11 radio/antenna pair

D. Calculate the minimum voltage requirements for lightning suppression systems

E. Calculate RF path loss in free space

Discussion 0

Correct Answer: E Vote an answer

Question #15

In a large enterprise (5000+ wireless users), by what recommended methods are IP addresses and VLANs assigned to different clients associated to the same AP? (Choose 3)

A. Upstream AAA servers dynamically assign VLANs to each user or group profile

B. Each BSSID is assigned a unique VLAN to help manage the size of broadcast domains on the wired network

C. The configuration profile of the client supplicant is hard-coded with a VLAN ID.

D. Each SSID is mapped to a static VLAN assignment

E. Multiple VLAN pools are designated for an SSID and user IP addresses are selected in a round-robin fashion from the associated pools.

F. Radio signal metrics (RSSI, SNR, etc.) of WLAN clients are triangulated for location-based VLAN assignment during association

G. In a centralized data forwarding model, clients automatically receive an IP address on the native VLAN of the AP's Ethernet access port.

Discussion 0

Correct Answer: A,D,E Vote an answer

Question #16

During a post-deployment verification, you are requested to troubleshoot an area where users are experiencing poor throughput. They are using data communication only, mainly from laptops. You captured the frame displayed in the exhibit from the location where problems are reported. This frame is typical of those that were captured by the analyzer.

What does this frame reveal about the RF network in this area?

A. The station that sent this frame is causing a DoS attack by using extended Duration values

B. The AP seems to be too far to provide enough coverage to this area

C. Contention Free is in place in this network, which may starve some non-QoS stations from access

D. Multipath or excessive collisions seem to be an issue in this area

E. Stations are using null data frames as protection mechanisms to reserve the medium

F. One station seems to be streaming video, thus may have reserved significant bandwidth via admission control

Discussion 0

Correct Answer: D Vote an answer

Question #17

The exhibit illustrates the azimuth and elevation for what type of antenna?

A. 60 degree horizontal patch

B. 10 degree vertical grid

C. 20 degree vertical yagi

D. 120 degree horizontal sector

E. Omni-directional

Discussion 0

Correct Answer: D Vote an answer

Question #18

You are tasked with designing the WLAN to accommodate certain high density areas on your university campus where users are highly transient (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 associations. The DHCP server is a Windows Server 2008 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 effective at achieving this design task?

A. Enable mandatory admission control

B. Set the 802.1X re-authentication timer to 10 minutes

C. Set the DHCP lease for this pool to 20 minutes

D. Set the AES rekey interval to 5 minutes

E. Set the maximum client limit per radio to 64

F. Set the RTS threshold to 2346 bytes

G. Set the inactive wireless client timeout (client age-out) to 5 minutes

H. Enable WLAN Controller DHCP relay

Discussion 0

Correct Answer: C Vote an answer

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