問題文
An engineer opens the shell of the chips on a fabric card of a data center switch and reads how the two ways of getting there differ. Which statement is correct?
選択肢
- Work done in the shell of the chips is barred from the accounting record either way, since the record holds the commands of the operating system alone.
- The shell of the chips keeps a log of its own of the work done in it, and that log is folded into the accounting record when the session is closed.
- Work typed straight into the shell of the chips is what the accounting record holds, and the way in from the operating system leaves the record of it untouched.
- Reaching that shell from the prompt of the operating system lets the reader sift and divert what it prints, and it puts a line in the accounting record, while the same work typed straight into the shell is left out of that record.