A coverage-based wireless network design focuses on providing signal coverage over a large area using fewer APs operating at higher power levels. This approach aims to ensure that the entire area has basic connectivity.
However, it may not support high client densities or bandwidth-intensive applications effectively. In contrast, a capacity-based design would involve deploying more APs at lower power levels to handle a higher number of clients and provide better performance.
Reference: CWDP-305 Official Study and Reference Guide, Chapter on Wireless Design Process

Comprehensive and Detailed Explanation:
In WLANs, excessive retransmissions of Real-time Transport Protocol (RTP) frames, often due to interference or poor signal quality, can trigger the rate adaptation algorithm in client devices. This algorithm reduces the data transmission rate to maintain connectivity, which can lead to increased latency and degraded voice quality.
Reference:CWDP-305 Study Guide, Chapter on Post-Design ValidationandTroubleshooting - Voice over WLAN Troubleshooting.

Comprehensive and Detailed Explanation:
The SKINNY protocol, also known as the Skinny Client Control Protocol (SCCP), is a proprietary protocol used by Cisco for VoIP signaling between endpoints and call managers. Its presence in a protocol capture indicates that VoIP services are active on the network.
Reference: CWDP-305 Official Study Guide, Chapter on Post-Design ValidationandTroubleshooting