CWNP Certified Wireless Design Professional CWDP-305 Exam Dumps: Updated Questions & Answers (September 2025)

USB 3.0 interfaces are known to generate RF interference in the 2.4 GHz band due to the high-frequency noise emitted by the differential signaling in USB 3.0 cables and ports. This interference can reduce SNR, especially for devices located close to the USB port.

From CWDP-305:

“USB 3.0 cables and ports can emit broadband noise in the 2.4 GHz band, negatively impacting receive sensitivity and SNR. This can distort measurements during protocol analysis or performance testing.”

— Reference: CWDP-305 Official Study and Reference Guide, Chapter on ProtocolandSpectrum Analysis

Comprehensive and Detailed Explanation:

In scenarios where the 2.4 GHz radio is not used for standard access point operations, it can be repurposed for functions such as security monitoring. Utilizing the 2.4 GHz radio for monitoring allows the network to detect unauthorized devices, rogue APs, and potential security threats, thereby enhancing the overall security posture of the wireless network.

802.11 admission control mechanisms are employed to manage and regulate the bandwidth resources available in a WLAN.By controlling the admission of traffic into the network, these mechanisms ensure that high-priority traffic, such as voice or video, receives the necessary resources for optimal performance.Admission control settings are configured separately for each Access Category (AC), allowing granular control over different types of traffic.

Comprehensive and Detailed Explanation:

Business requirements typically focus on objectives that directly impact the organization's performance, efficiency, and profitability. Options A, B, and D align with these goals:

A.Improving employee productivity enhances operational efficiency.

B.Cutting operating expenses reduces costs, increasing profitability.

D.Supporting 802.11n ensures the network meets current technological standards, improving performance.

C."Making employees happy to come to work" is more of a cultural or human resources goal and doesn't directly pertain to the technical or financial objectives of a network design. Therefore, it's not considered a business requirement in this context.

Comprehensive and Detailed Explanation:

Latency is a critical metric when designing WLANs for VoIP (Voice over IP) applications. High latency can result in poor call quality, including delays and echoes. Industry standards recommend that one-way latency should not exceed 150 milliseconds to maintain acceptable voice quality. Therefore, during site surveys and network design, measuring and minimizing latency is essential to ensure a high-quality VoIP experience.

802.1X/EAP preauthentication allows a client to authenticate with a new AP before roaming, reducing handoff latency. However, preauthentication typically requires that the new AP is within the same Layer 2 domain as the current AP. If the new BSS operates on a different IP subnet (Layer 3 domain), the STA may not attempt preauthentication due to the inability to establish a direct Layer 2 connection for the EAP exchange.

In high-security or regulated environments like food processing plants, it's crucial to obtain proper authorization before entering restricted zones. The CWDP-305 Study Guide emphasizes that site surveyors must follow all site-specific safety and access policies. Entering restricted areas without prior clearance can result in serious compliance violations. Therefore, the surveyor must coordinate with the customer’s facilities or security team to gain appropriate access prior to beginning the survey.

In environments like museums, aesthetic considerations are paramount. To maintain the visual integrity of exhibits while ensuring robust wireless coverage, APs can be concealed using plastic covers that match the surroundings. These covers are designed to be RF-transparent, ensuring that signal strength and quality are not compromised.

Other options are less suitable:

Locking the AP inside a metal box would severely attenuate the wireless signal due to the shielding effect of metal.

Placing APs between walls and I-beams may obstruct signal propagation and complicate maintenance.

Using outdated technology like 802.11b APs would not meet modern performance standards and could introduce compatibility issues.

The control plane in WLAN architectures is responsible for managing and optimizing various network functions to ensure efficient and reliable wireless communication. Key functions include:

Channel Reuse Plans:Determining optimal channel assignments to minimize interference and maximize spectrum efficiency.

Mobility Management:Facilitating seamless client roaming between access points without service interruption.

Transmit Power:Adjusting the power levels of access points to ensure adequate coverage while reducing interference.

Load Balancing:Distributing client connections across multiple access points to prevent overloading and maintain performance.

These functions are critical in both centralized and distributed WLAN architectures to maintain optimal network performance and user experience.

The Effective Isotropic Radiated Power (EIRP) is calculated using the formula:

Omni Calculator

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The Things Network

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EIRP (dBm) = Transmit Power (dBm) + Antenna Gain (dBi) - Cable Loss (dB)

The Things Network

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blog.iptel.com.au

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Assuming negligible cable loss, we first convert the transmit power from milliwatts to dBm:

wifinigel.blogspot.com

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Everything RF

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Transmit Power = 25 mW = 10 * log10(25) ≈ 14 dBm

Now, adding the antenna gain:

EIRP = 14 dBm + 3 dBi = 17 dBm

Therefore, the EIRP of the APs in this design is 17 dBm.