Comprehensive and Detailed Explanation:
In the final meeting after successfully implementing a WLAN infrastructure, it is essential to have the acquirer and key stakeholders from the customer side present. The acquirer is typically the individual or group responsible for procuring the WLAN solution, while stakeholders include those who have an interest in the project's success, such as IT managers, network administrators, and department heads. Their presence ensures that the implementation aligns with the organization's requirements and expectations, and it provides an opportunity to address any concerns or questions before project closure.
Reference: CWDP-305 Official Study Guide, Chapter on Wireless Design Process

Comprehensive and Detailed Explanation:
The Duty Cycle chart in a spectrum analyzer represents the percentage of time a specific frequency is occupied by RF energy above a certain threshold. This measurement is crucial for identifying how much of the channel's capacity is being utilized, which aids in determining potential interference and channel availability for WLAN deployment. A high duty cycle indicates that the frequency is heavily utilized, possibly leading to contention and reduced performance.
Reference: CWDP-305 Official Study Guide, Chapter on ProtocolandSpectrum Analysis