Comprehensive and Detailed Explanation:
When calibrating a floor plan for predictive and manual site surveys, using the longest available measurement, such as a straight exterior wall, provides the most accurate and reliable RF data.Longer measurements reduce the impact of scaling errors, ensuring that the entire floor plan is accurately represented in the survey software.Shorter measurements, like those of a single ceiling tile or doorway, can introduce significant scaling errors over larger distances.
Reference: CWDP-305 Official Study and Reference Guide, Chapter on Advanced Site Surveys

In outdoor environments, channel contention, co-channel interference (CCI), and adjacent channel interference (ACI) can negatively affect bridge performance. The most effective method for identifying usable channels is through a site survey, which includes spectrum analysis at both endpoints.
From CWDP-305:
"Performing an outdoor site survey is critical for point-to-point deployments. This reveals existing RF usage in the area, allowing the selection of channels with minimal interference for optimal link stability."
- Reference: CWDP-305 Official Study and Reference Guide, Chapter on Advanced Site Surveys

In environments like museums, aesthetic considerations are paramount. To maintain the visual integrity of exhibits while ensuring robust wireless coverage, APs can be concealed using plastic covers that match the surroundings. These covers are designed to be RF-transparent, ensuring that signal strength and quality are not compromised.
Other options are less suitable:
Locking the AP inside a metal box would severely attenuate the wireless signal due to the shielding effect of metal.
Placing APs between walls and I-beams may obstruct signal propagation and complicate maintenance.
Using outdated technology like 802.11b APs would not meet modern performance standards and could introduce compatibility issues.
Reference: CWDP-305 Official Study and Reference Guide, Chapter on Designing for Specific Applications

Comprehensive and Detailed Explanation:
The 2.4 GHz band has only three non-overlapping channels: 1, 6, and 11.Using other channels can lead to overlapping and interference.To prevent this, the automatic channel assignment settings should be configured to use only channels 1, 6, and 11, ensuring minimal overlap and optimal performance.
Reference: CWDP-305 Official Study and Reference Guide, Chapter on Post-Design ValidationandTroubleshooting

Project parameters in WLAN design software typically include requirements and constraints like:
Minimum required signal strength (e.g., -67 dBm for VoIP)
Minimum required SNR
Desired data rate coverage
These are configured before design work begins and guide how AP placement and coverage will be modeled.
From CWDP-305:
"Project parameters such as minimum signal strength, data rate, and required SNR must be defined before the actual placement of access points. These values define the target RF environment."
- Reference: CWDP-305 Official Study and Reference Guide, Chapter on Wireless Design Process