CWDP-305 Exam Dumps - Certified Wireless Design Professional

Comprehensive and Detailed Explanation:

Enabling the "Validate server certificate" option is a critical security measure when configuring Extensible Authentication Protocol (EAP) types, such as EAP-TLS or PEAP. This setting ensures that the client verifies the authenticity of the RADIUS server's certificate during the authentication process, preventing man-in-the-middle attacks. By validating the server certificate, clients can confirm they are connecting to a legitimate network, thereby maintaining the integrity and security of the WLAN.

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Confidentiality is a core principle of information security that involves keeping data hidden or inaccessible from unauthorized users. In the context of WLANs, confidentiality is maintained through encryption protocols such as WPA2/WPA3, which ensure that even if a data transmission is intercepted, its contents remain unreadable to unintended receivers.

From the CWDP-305 Study Guide, confidentiality is defined as:

“The protection of transmitted data from unauthorized disclosure. This is typically accomplished through encryption methods that obscure the original content, ensuring that intercepted packets cannot be deciphered by unintended recipients.”

Other security terms like authentication (verifying identity), integrity (ensuring data is not altered), and nonrepudiation (assurance of origin) are also important but pertain to different aspects of data protection.

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

To ensure that Access Points (APs) are installed in the exact locations specified in the design, it's essential to use visual aids and physical markers.Cameras can capture images of the intended installation sites, and marking tools can be used to indicate precise mounting locations on-site.This approach minimizes errors during installation and ensures adherence to the design plan.

The CWDP-305 Official Study and Reference Guide highlights the use of such tools:

"Use cameras and marking tools to document and indicate AP placement, ensuring accurate installation according to the design."

In outdoor environments, channel contention, co-channel interference (CCI), and adjacent channel interference (ACI) can negatively affect bridge performance. The most effective method for identifying usable channels is through a site survey, which includes spectrum analysis at both endpoints.

From CWDP-305:

“Performing an outdoor site survey is critical for point-to-point deployments. This reveals existing RF usage in the area, allowing the selection of channels with minimal interference for optimal link stability.”

— Reference: CWDP-305 Official Study and Reference Guide, Chapter on Advanced Site Surveys

CAPWAP (Control and Provisioning of Wireless Access Points):Modern standard protocol for tunneling management and data frames between APs and WLCs.

GRE (Generic Routing Encapsulation):Sometimes used by vendors as an alternative tunneling method, especially for data transport.

From CWDP-305:

“CAPWAP is the most widely used protocol for communication between access points and controllers. GRE is also utilized in some vendor implementations for tunneling user data.”

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

When establishing a long-distance wireless bridge, such as one spanning 13 kilometers, it's crucial to consider the Fresnel Zone, which is the elliptical area around the line-of-sight path between two antennas. Obstructions within this zone can cause signal degradation due to diffraction.

One significant factor affecting the Fresnel Zone over long distances is the Earth's curvature, commonly referred to as the Earth bulge. As the distance between the two points increases, the Earth's surface curves away, potentially intruding into the Fresnel Zone and obstructing the signal path. Therefore, engineers must calculate the Earth's bulge and ensure that antenna heights are sufficient to maintain a clear Fresnel Zone.

While Free Space Path Loss (FSPL), antenna gain, and receiver sensitivity are essential parameters in link budget calculations, they do not directly address the physical clearance required in the Fresnel Zone.

Wi-Fi Multimedia (WMM) is a feature that enables Quality of Service (QoS) on 802.11 networks, allowing for the prioritization of different types of traffic such as voice, video, and data. If WMM is not enabled, the network cannot differentiate or prioritize traffic types, leading to potential performance issues, especially for latency-sensitive applications like VoIP or video conferencing. Therefore, without WMM, 802.11 QoS functionalities are unavailable, impacting the overall efficiency and user experience of the WLAN.

If an access point (AP) fails to power up via Power over Ethernet (PoE), but the Ethernet cable functions correctly with other devices, the most probable cause is that the PoE switch has exhausted its power budget.Each PoE switch has a maximum power capacity, and exceeding this limit can prevent additional devices from receiving power.Extreme Networks

The CWDP-305 Official Study and Reference Guide discusses the importance of monitoring PoE budgets during WLAN deployments.