フリー問題

問題文

A small office already has cordless phones and a microwave in the break room. Which pair states how the usable plan handles the 2.4 GHz band and what that spectrum also carries?

選択肢

1. The crowded band offers only three non-overlapping options, so the usable plan repeats those three bands and the shared spectrum carries the household devices in that assessment.
2. The crowded band offers only three non-overlapping options, so the usable plan repeats those three channels and the shared spectrum carries the household chargers in that assessment.
3. The crowded band offers only three non-overlapping options, so the usable plan repeats those three bands and the shared spectrum carries the household chargers in that assessment.
4. The crowded band offers only three non-overlapping options, so the usable plan repeats those three channels and the shared spectrum carries the household devices in that assessment.