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フリー問題

Certified Wireless Analysis Professional のフリー問題 18 / 20 問目

問題文

In one transmission the AP appears to serve four stations at the same instant, and just before it there is a control frame addressed to all four. Which pairing states how the one transmission is divided and what the control frame is for?

選択肢

  1. That single transmission is split into the impulse units assigned per station, and the frame sent just before exists to gather the scheduled replies that reconstruction of the upward direction needs.
  2. That single transmission is split into the impulse units assigned per station, and the frame sent just before exists to gather the unsolicited replies that reconstruction of the upward direction needs.
  3. That single transmission is split into the resource units assigned per station, and the frame sent just before exists to gather the unsolicited replies that reconstruction of the upward direction needs.
  4. That single transmission is split into the resource units assigned per station, and the frame sent just before exists to gather the scheduled replies that reconstruction of the upward direction needs.

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