In the context of wireless network design, documentation is typically divided into two primary categories:
High-Level Design (HLD) and Low-Level Design (LLD).
High-Level Design (HLD):Provides an overview of the network architecture, including major components and their relationships. It focuses on the overall design without delving into specific configurations.
Low-Level Design (LLD):Offers detailed information about the network, including specific configurations, IP addressing schemes, VLAN assignments, and device roles.
When documenting VLANs, the LLD should include a table that specifies which devices perform routing services for each VLAN. This level of detail ensures that during implementation, network engineers have clear guidance on how to configure each device to handle inter-VLAN routing appropriately.
Reference: CWDP-305 Official Study and Reference Guide, Chapter on Wireless Design Process

Signal-to-Noise Ratio (SNR) is a critical metric in VoWLAN deployments, as voice applications are sensitive to latency and require clear signal quality. SNR is calculated by subtracting the noise floor from the received signal strength indicator (RSSI).
Given:
Required SNR: 25 dB
Noise floor: -88 dBm
To achieve the required SNR:
RSSI = Noise Floor + SNR
RSSI = -88 dBm + 25 dB = -63 dBm
The CWDP-305 Official Study and Reference Guide emphasizes the importance of maintaining adequate SNR for voice applications:
"Voice over WLAN requires a minimum SNR to ensure call quality and reliability. Designing for appropriate RSSI levels relative to the noise floor is essential." Therefore, to meet the system's requirements, the minimum RSSI should be -63 dBm.
Reference: CWDP-305 Official Study and Reference Guide, Chapter on Designing for Specific Applications

Comprehensive and Detailed Explanation:
In environments like museums, where aesthetics are paramount, it's essential to ensure that wireless equipment doesn't detract from the visual appeal. Using a plastic cover that matches the environment allows the access point (AP) to blend seamlessly with its surroundings without compromising signal quality. This approach maintains the integrity of the museum's design while providing the necessary wireless coverage.
Option B:Locking the AP inside a metal box can severely degrade the wireless signal due to signal attenuation caused by metal enclosures.
Option C:Placing APs between walls and I-beams can obstruct signal propagation, leading to poor coverage and performance issues.
Option D:Using outdated technology like 802.11b not only fails to meet current performance standards but also doesn't address the aesthetic requirement.
Reference:CWDP-305 Study Guide, Chapter on Infrastructure Design - Aesthetics and Mounting Considerations.

Comprehensive and Detailed Explanation:
The 5 GHz band offers more non-overlapping channels and is less susceptible to interference compared to the
2.4 GHz band. By moving corporate data clients and VoWiFi devices to the 5 GHz band, the network can achieve better performance and reduced interference, especially for latency-sensitive applications like voice over Wi-Fi.
Reference: CWDP-305 Official Study Guide, Chapter on Infrastructure Design

Comprehensive and Detailed Explanation:
Multicasting is a network capability that allows a single data stream to be transmitted to multiple recipients simultaneously, which is highly efficient for live video streaming applications. By configuring multicasting in WLAN implementations, bandwidth usage is optimized, and network congestion is reduced, as the same data does not need to be sent individually to each client. Implementing multicast support ensures that all intended recipients receive the video stream with minimal latency and resource utilization.
Reference: CWDP-305 Official Study Guide, Chapter on Designing for Specific Applications