CWDP-305 Exam Dumps : Certified Wireless Design Professional

When aesthetics are a concern, one acceptable approach—assuming AP performance and RF behavior will not be affected—is to use manufacturer-approved or specially designed cosmetic covers/skins. These allow the AP to blend into the environment without altering signal propagation.

From CWDP-305:

“Cosmetic or aesthetic AP skins and mounts can be used when design constraints do not permit repositioning APs. These solutions preserve the intended RF coverage while meeting visual requirements.”

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

In environments where access points (APs) are mounted on high ceilings (over 6 meters), it's essential to choose an antenna that provides adequate coverage to client devices located at floor level. A low-gain dipole antenna is vertically polarized and offers an omnidirectional radiation pattern, which is suitable for such scenarios. Its radiation pattern ensures that the signal is distributed evenly in all horizontal directions, providing consistent coverage to devices below.

Other antenna types like patch, dish, and grid are more directional and may not provide the necessary coverage for clients spread across the floor area.

Jitter and latency are two important metrics for measuring the quality and performance of wireless networks, especially for real-time applications such as voice and video. Latency is the average time taken for a data packet to reach the destination, while network jitter is the irregularity in latency. When the latency is consistently high, it can mean a slow but stable connection. On the other hand, a high jitter means there may be sporadic disruptions or delays in the transmission, which can affect the quality of service and user experience. Jitter is caused by various factors, such as network congestion, interference, routing changes, hardware issues, or packet prioritization. Jitter can be measured by calculating the difference between the latency of two consecutive packets, or by using the standard deviation of the latency of a sample of packets. Jitter can be reduced by using Quality of Service (QoS) mechanisms, such as traffic shaping, queuing, or scheduling, which can prioritize the packets based on their importance and sensitivity to delay. Jitter can also be mitigated by using jitter buffers, which can store the incoming packets and smooth out the variations in latency before delivering them to the application. References: CWNP, CWDP Certified Wireless Design Professional Official Study Guide, Network Jitter - Common Causes and Best Solutions, Network Jitter vs Latency: What’s the Difference and Why Does It Matter, Jitter vs Latency - What’s The Difference and Why it Matters