フリー問題

問題文

An engineer is filling an empty rack with a head unit and three expansion shelves. The rack unit map places the heaviest chassis in the lowest positions. What does that ordering achieve?

選択肢

1. The rack unit map is drawn that way so that the spare slots stay awaiting the later growth, and every unit positioned above depends on it.
2. The rack unit map is drawn that way so that the shelf numbers stay matching the chain order, and every unit positioned above depends on it.
3. The rack unit map is drawn that way so that the loaded mass sits near the rack floor, and every unit positioned above depends on it.
4. The rack unit map is drawn that way so that the cabled runs stay beside the shelf group, and every unit positioned above depends on it.