Pass the CWNP CWDP Wi-Fi Design CWDP-305 Questions and answers with ExamsMirror

EAP-TLS (Extensible Authentication Protocol-Transport Layer Security) is considered one of the most secure EAP methods. It requires both the client and the server to have certificates, enabling mutual authentication. This method eliminates the need for passwords, reducing the risk of credential theft.

EAP-TTLS allows for server-side certificates and can use passwords for client authentication, making it less secure than EAP-TLS.

PEAP encapsulates EAP within a TLS tunnel, typically using server certificates and password-based client authentication.

Comprehensive and Detailed Explanation:

For Voice over IP (VoIP) over WLAN, seamless roaming is critical to maintain call quality. To achieve this:

D.Ensuring that at least two access points (APs) are visible with adequate signal strength from any location allows client devices to roam between APs without dropping the connection. This overlap facilitates smooth handoffs and maintains call continuity.

A.While measuring cell overlap is useful, the key is to design the network to provide the necessary overlap, not just measure it.

B.Increasing output power can lead to larger cells but may cause interference and reduce the number of available channels, which is counterproductive in dense environments.

C.Higher gain antennas focus the signal, which may not provide the desired omnidirectional coverage needed for consistent overlap.

IEEE 802.3at (PoE+) provides up to 30 watts of power per port. To determine how many devices can be supported with a total budget of 740 W:

740 W ÷ 30 W per device = 24.67

However, due to real-world power overheads and cable losses, it's safe to estimate each device may draw up to ~25–30 W. Most vendors recommend a planning budget of around 25–28 W per 802.3at device.

Safe calculation using full 30 W:

740 ÷ 30 = 24.6 → you could theoretically power 24, but for guaranteed power availability considering margin, most designs plan for:

740 ÷ 40 = 18.5 → about 18 devices conservatively

Answer: 18 devices can certainly be powered.

— Reference: CWDP-305 Official Study and Reference Guide, Chapter on Infrastructure Design

Comprehensive and Detailed Explanation:

Installing antennas on a 70-foot tower involves working at significant heights, which presents safety risks and requires specialized skills. Therefore:

A. Hiring a certified tower installer:It is essential to employ professionals who are certified and trained in tower climbing and installation to ensure compliance with safety regulations and standards, such as those set by OSHA and ANSI.

B. Special antennas that avoid reflections on the tower poles:While antenna placement is important, standard antennas can be used with proper installation techniques to minimize reflections.

C. APs that are designed to operate above 70 feet:Access points are designed to operate within specific environmental conditions, but the height of installation does not typically necessitate special APs.

D. Special RF cables that will not create loss incurred by the metal tower construction:Standard RF cables are designed to function effectively in various installations; however, proper cable selection and installation practices are important to minimize signal loss.

For long-distance point-to-point wireless links, such as those spanning over 1000 yards, directional antennas are preferred due to their focused beamwidth and higher gain.Yagi antennas are a type of directional antenna known for their high gain and narrow beamwidth, making them suitable for such applications.While panel and patch antennas are also directional, Yagi antennas are specifically designed for long-range communications.

Comprehensive and Detailed Explanation:

In a Single Channel Architecture (SCA), all APs operate on the same channel and present a single virtual BSSID to clients. The WLAN controller manages client associations by directing the most appropriate AP to handle communication with the client, typically based on the strongest Received Signal Strength Indicator (RSSI).

This architecture simplifies client roaming and reduces co-channel interference, as the controller orchestrates AP transmissions to prevent collisions.

A client-to-AP link imbalance occurs when the AP's transmit power is significantly higher than that of the client device.This disparity can lead to situations where the client can receive signals from the AP but cannot transmit signals back effectively.This imbalance is particularly problematic in environments where clients have limited transmit capabilities, such as battery-powered devices.To mitigate this issue, it's recommended to adjust the AP's transmit power to match the capabilities of the client devices, ensuring balanced communication.

In the context of evaluating published competitive tests by equipment vendors, it's crucial to recognize the common omissions that can impact the validity and applicability of the test results.

According to the CWDP-305 Official Study and Reference Guide, these tests often lack:

Client devices and configurations: The specific client devices used in testing, along with their configurations, are frequently not disclosed. This omission makes it challenging to assess the compatibility and performance implications for different client types.

Detailed test methodology: A comprehensive description of the test procedures, including the environment, tools used, and step-by-step processes, is often missing. Without this information, replicating the tests or understanding the context of the results becomes difficult.

Detailed configurations of each vendor’s equipment: The exact settings and configurations applied to the equipment under test are typically not provided. This lack of transparency hinders the ability to determine whether the equipment was optimized or configured in a standard manner during testing.

These omissions can lead to biased or non-reproducible results, making it essential for network professionals to critically assess such vendor-published tests.

Manual identification of radar pulses using spectrum analysis charts can be challenging because radar signals often have low amplitude at the Wi-Fi receiver, making them difficult to detect visually.This limitation can lead to inaccurate assessments of DFS channel availability.Automated detection methods or using the actual WLAN equipment intended for deployment may provide more reliable results.

In Wi-Fi networks, the 802.11e amendment introduces Quality of Service (QoS) by defining Access Categories (ACs) to prioritize different types of traffic.The AC_VO (Voice) category is designated for voice traffic, which requires low latency and jitter.To maintain QoS across both wireless and wired networks, it's essential to map these categories to appropriate Differentiated Services Code Point (DSCP) values.

The AC_VO category corresponds to the Expedited Forwarding (EF) DSCP value, which is 46.This mapping ensures that voice traffic receives high priority treatment throughout the network, minimizing delays and ensuring call quality.