Comprehensive and Detailed Explanation:
Designing a guest network in a large enterprise involves several considerations to ensure security, performance, and user experience:
Rate limiting:Implementing bandwidth controls prevents guest users from consuming excessive network resources, ensuring that corporate users maintain optimal performance.
Traffic tunneling or anchoring:Redirecting guest traffic through a centralized point (such as a DMZ or a dedicated internet connection) isolates it from the corporate network, enhancing security.
SSID segmentation:Using separate SSIDs for guest and corporate networks allows for distinct policy enforcement, access controls, and network segmentation.
Option A:While 802.11n provides higher throughput, it's a standard feature and not a specific design consideration for guest networks.
Option C:802.1X security is typically used for enterprise networks requiring individual authentication. Guest networks often use simpler authentication methods like captive portals.
Reference:CWDP-305 Study Guide, Chapter on Designing for Specific Applications - Guest Network Design Considerations.

Received Signal Strength Indicator (RSSI) is a metric that measures the power level of a received radio signal.
In the context of location-based services within wireless networks, RSSI-based localization is known for its simplicity, as it doesn't require additional hardware or complex algorithms.However, this simplicity comes at the cost of accuracy.RSSI measurements can be significantly affected by environmental factors such as multipath propagation, obstacles, and signal interference, leading to less precise location estimations compared to other methods like AoA, ToA, or TDoA.Wray Castle Reference: CWDP-305 Official Study and Reference Guide, Chapter on Designing for Specific Applications

A radome (a portmanteau of "radar" and "dome") is a structural, weatherproof enclosure that protects a radar or antenna system. Constructed from materials transparent to radio waves, such as fiberglass, radomes shield antennas from environmental elements like wind, rain, and debris without interfering with signal transmission.
They are commonly used in outdoor wireless deployments to ensure the longevity and performance of antenna systems.
Reference: CWDP-305 Official Study and Reference Guide, Chapter on Infrastructure Design

To measure performance metrics such as throughput and latency, you must associate with the AP and generate
/receive real traffic. This type of survey is called an active survey.
From CWDP-305:
"Active surveys assess the end-user experience by collecting real-time data, such as throughput, latency, and packet loss, which cannot be captured by passive surveys." Passive surveys only collect information from beacons and probe responses without associating with the AP.
- Reference: CWDP-305 Official Study and Reference Guide, Chapter on Post-Design ValidationandTroubleshooting

Comprehensive and Detailed Explanation:
In a 3x3 802.11n configuration supporting two spatial streams over a 20 MHz channel with a short guard interval (400ns), the maximum data rate achievable is 144 Mbps. This is derived from the MCS (Modulation and Coding Scheme) index tables defined in the 802.11n standard, where MCS 15 corresponds to two spatial streams at 64-QAM modulation with a 5/6 coding rate. Therefore, the correct maximum MCS rate for this configuration is 144 Mbps.
Reference: CWDP-305 Official Study Guide, Chapter on Infrastructure Design