フリー問題

問題文

Scripts fail at random because each page needs a different time to appear. Which of the three wait mechanisms does the syllabus call much more reliable than the other two?

選択肢

1. The reliable option counts the elapsed milliseconds and it keeps the timeout guard for the verification
2. The reliable option restarts the broken sessions and it keeps the timeout guard for the verification
3. The reliable option consumes the published events and it keeps the timeout guard for the verification
4. The reliable option polls the changed states and it keeps the timeout guard for the verification