CWDP-305 Exam Dumps - CWNP CWDP Wi-Fi Design Questions and Answers

In public Wi-Fi environments, it's common to implement security measures that prevent clients from communicating directly with each other. This is achieved through peer-to-peer blocking, also known as client isolation. When enabled, this feature ensures that each client can communicate with the AP and access external networks but cannot interact with other clients on the same WLAN.

This setup enhances security by reducing the risk of attacks or unauthorized access between clients.

Conducting a post-deployment survey before all APs are installed—particularly in a multi-floor environment—may yield incomplete results. APs from other floors can influence coverage (due to bleed-through floors), roaming behavior, and channel planning, so the validation should ideally happen after full deployment.

From CWDP-305:

“In multi-floor environments, APs from upper and lower floors contribute to the RF landscape. Validation should wait until all APs are installed to evaluate the WLAN's full performance characteristics.”

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

Co-Channel Interference (CCI) occurs when multiple APs on the same channel are heard in the same area, even at relatively low signal levels. CCI is not eliminated simply because signals are below −75 dBm. In fact, CCI is a concern even when APs are heard at levels as low as −85 dBm or lower.

From CWDP-305:

“CCI can be problematic even when the signal from neighboring APs is heard at levels between −85 dBm to −93 dBm. Effective channel planning requires minimizing overlap of same-channel signals at or above these thresholds.”

— Reference: CWDP-305 Official Study Guide, Post-Design ValidationandTroubleshooting Chapter

Barcode scanners are typically used in retail, logistics, and warehouse environments to transmit small amounts of data (e.g., scanned UPC codes) to backend systems. Therefore, their throughput requirements are minimal.

From CWDP-305:

“Barcode scanners and similar IoT devices typically transmit small packets at low intervals and have very low throughput requirements. WLAN design for such devices should focus on coverage and roaming, not capacity.”

— Reference: CWDP-305 Official Study and Reference Guide, Chapter on Designing for Specific Applications

For 802.3bz MultiGig Ethernet, which supports speeds of 2.5 Gbps and 5 Gbps over twisted-pair cabling, the recommended cabling standards vary based on the distance:

Cat-5e: Suitable for 2.5 Gbps up to 100 meters; 5 Gbps up to 55 meters

Cat-6: Suitable for 5 Gbps up to 55 meters

Cat-6a: Suitable for 10 Gbps up to 100 meters

Given that some cable runs will exceed 55 meters, Cat-6a is the most appropriate choice to ensure reliable MultiGig performance over longer distances.