フリー問題

問題文

A cable has accidentally been looped between two access links. Is the check that hunts for that situation active, and what does it do when it finds one?

選択肢

1. The check that looks for miscabled links is, until somebody turns it on, idle across the board, and when it does find a loop the action it takes is to note it down and let it run
2. The check that looks for miscabled links is, until somebody turns it on, on and watching now, and when it does find a loop the action it takes is to take the link out of service
3. The check that looks for miscabled links is, until somebody turns it on, on and watching now, and when it does find a loop the action it takes is to note it down and let it run
4. The check that looks for miscabled links is, until somebody turns it on, idle across the board, and when it does find a loop the action it takes is to take the link out of service