フリー問題

問題文

Before joining a public network, a station exchanges several frames that ask the AP questions and get answers, all before any authentication happens. Which pairing states what those frames are for and what the station has not yet done?

選択肢

1. Those frames let the station ask about the upstream options before committing, and at that point it has still not performed the supplicant check that identification of the subscriber requires.
2. Those frames let the station ask about the spectrogram options before committing, and at that point it has still not performed the unscheduled check that identification of the subscriber requires.
3. Those frames let the station ask about the spectrogram options before committing, and at that point it has still not performed the supplicant check that identification of the subscriber requires.
4. Those frames let the station ask about the upstream options before committing, and at that point it has still not performed the unscheduled check that identification of the subscriber requires.