Defining wall materials (e.g., drywall, brick, concrete) in WLAN design software is essential for accurate RF modeling. Different materials attenuate RF signals to varying degrees, and propagation models account for these losses to calculate realistic signal coverage.
From CWDP-305:
"Accurate modeling of RF signal behavior requires defining wall and obstacle materials to account for signal attenuation and reflections. This improves the accuracy of predictive design tools."
- Reference: CWDP-305 Official Study and Reference Guide, Chapter on Wireless Design Process

A Non-Disclosure Agreement (NDA) is a legal contract that establishes a confidential relationship between parties.In the context of WLAN design, an NDA ensures that any proprietary or sensitive information shared by the customer during the information-gathering phase is kept confidential and not disclosed to unauthorized parties.This agreement builds trust between the service provider and the customer, facilitating open communication and information sharing necessary for effective WLAN design.
Reference: CWDP-305 Official Study and Reference Guide, Chapter on Wireless Design Process

When designing a WLAN infrastructure, it's essential to calculate the Power over Ethernet (PoE) budget accurately to ensure all Access Points (APs) receive sufficient power. IEEE 802.3at, also known as PoE+, provides up to 30 watts of power per port. Therefore, for 6 APs:
6 APs × 30 W = 180 W
This calculation assumes that each AP requires the full 30 W provided by IEEE 802.3at and that there are no additional power losses or overheads. It's always a good practice to include a buffer in real-world scenarios to account for power losses in cables and potential future expansions.Quizlet Reference: CWDP-305 Official Study and Reference Guide, Chapter on Infrastructure Design

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

A client-to-AP link imbalance occurs when the AP's transmit power is significantly higher than that of the client device.This disparity can lead to situations where the client can receive signals from the AP but cannot transmit signals back effectively.This imbalance is particularly problematic in environments where clients have limited transmit capabilities, such as battery-powered devices.To mitigate this issue, it's recommended to adjust the AP's transmit power to match the capabilities of the client devices, ensuring balanced communication.
Reference: CWDP-305 Official Study and Reference Guide, Chapter on Infrastructure Design