Comprehensive and Detailed Step-by-Step Explanation:
1. Features of Wi-Fi 6:
Wi-Fi 6 (802.11ax) introduces several new technologies to improve network efficiency, reduce latency, and optimize power usage:
OFDMA (Orthogonal Frequency Division Multiple Access): Allows multiple devices to transmit simultaneously, improving concurrency.
TWT (Target Wake Time): Reduces power consumption by scheduling communication times for devices.
High Bandwidth: Supports up to 9.6 Gbps, significantly faster than Wi-Fi 5.
2. Why Zero Latency is Incorrect:
While Wi-Fi 6 reduces latency compared to earlier standards, zero latency is not achievable due to inherent delays in network communication.
The statement "Realizes zero latency" is misleading and technically inaccurate.
3. Analysis of Each Option:
Option A: Uses OFDMA technology to achieve high concurrency.
Correct (True Statement).
OFDMA is a core feature of Wi-Fi 6 that improves concurrent communication.
Option B: Realizes zero latency, ensuring efficient service running.
Incorrect (False Statement).
Wi-Fi 6 reduces latency but cannot eliminate it entirely.
Option C: Provides high bandwidth, up to 9.6 Gbps.
Correct (True Statement).
Wi-Fi 6 supports a theoretical maximum bandwidth of 9.6 Gbps.
Option D: Uses TWT technology to reduce terminal power consumption.
Correct (True Statement).
TWT schedules communication times, allowing devices to enter low-power states and conserve battery life.
4. Summary:
The false statement is B, as Wi-Fi 6 does not achieve zero latency.
[Reference:, Huawei HCIA-Datacom Study Guide, Chapter "Wi-Fi 6 Technology.", IEEE 802.11ax Standard Documentation., , , , ]