Free Practice Questions for CWNP CWDP-305 Exam

The introduction of a new requirement, such as supporting RFID location tracking, after the site survey has commenced constitutes scope creep.Scope creep refers to the uncontrolled expansion of project scope without corresponding adjustments to time, cost, and resources.Implementing location tracking requires specific design considerations, including AP placement and calibration, which should be planned from the project's outset.Introducing such requirements mid-project can lead to design inefficiencies and increased costs.

Active site surveys involve connecting to the WLAN and measuring performance metrics such as signal strength, throughput, and roaming behavior.This type of survey is essential to verify that clients can seamlessly roam between APs without connectivity issues.

The CWDP-305 Official Study and Reference Guide highlights the role of active surveys in assessing the real-world performance of a WLAN, including the effectiveness of roaming configurations.

In wired networks, VLANs (Virtual Local Area Networks) are used to segment network traffic into separate broadcast domains, effectively isolating traffic for security and performance purposes.Each VLAN operates as its own distinct network segment.

In wireless networks, while VLANs are used to segregate traffic once it reaches the wired infrastructure, the wireless medium itself is inherently a shared medium.This means that, over the air, all wireless clients share the same RF space, and broadcasts are received by all clients regardless of VLAN assignment.Therefore, VLANs in wireless networks do not inherently provide the same level of broadcast domain separation as in wired networks.

Comprehensive and Detailed Explanation:

High channel utilization can be caused by various factors, but one critical issue to rule out is the presence ofan RF signal generator causing a Denial of Service (DoS)attack. Such devices can emit continuous or intermittent signals that occupy the channel, preventing legitimate Wi-Fi communication. Identifying and eliminating such sources is essential for maintaining optimal network performance.

Low PHY rates: Can contribute to increased airtime usage but are not the primary concern in this context.

High workload or frame rates: Indicate heavy usage but not necessarily malicious interference.

In large enterprise WLAN deployments, efficient IP address and VLAN assignment is crucial for scalability and performance. Common and recommended methods include:

Static VLAN Assignment per SSID:Each SSID is mapped to a specific VLAN, allowing for straightforward traffic segregation.

Dynamic VLAN Assignment via AAA:Utilizing RADIUS servers to assign VLANs based on user credentials or group memberships provides flexibility and centralized control.

VLAN Pooling:Assigning IP addresses from multiple VLANs in a round-robin fashion helps distribute clients evenly and prevents DHCP exhaustion.

However, assigning VLANs based on real-time radio signal metrics like RSSI or SNR is not a standard or recommended practice. Such metrics are variable and can lead to inconsistent VLAN assignments, complicating network management and potentially affecting client performance.

EAP-PEAP is the most suitable 802.1X-based authentication method for environments that do not have a public key infrastructure (PKI). It uses a server-side certificate but does not require client-side certificates, simplifying deployment while maintaining strong authentication.

From CWDP-305:

“EAP-PEAP allows secure authentication using usernames and passwords without requiring client certificates, making it ideal for organizations lacking PKI infrastructure.”

Other options:

EAP-TLS requires a PKI and client certificates (not suitable here).

PSK (pre-shared key) options don’t use 802.1X.

TKIP/RC4 is deprecated and insecure.

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

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:

WPA/WPA2-Personal is typically used in scenarios where:

A.Client devices lack support for 802.1X/EAP, making enterprise authentication methods unfeasible.

C.Devices are provisioned in bulk with shared credentials, simplifying deployment without the complexity of individual 802.1X configurations.

However:

B.High-latency roaming is undesirable; low-latency is preferred for seamless connectivity.

D.Requiring unique access credentials aligns more with WPA/WPA2-Enterprise, which supports individual authentication.

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.