多项选择题
A. rollback B. delete C. delete 0 D. rollback 0
What must you type to enter operational mode from the r...
单项选择题What must you type to enter operational mode from the root@% command prompt?（）
A. exit B. configure C. edit D. cli
When using keyboard shortcuts, which keystroke combinat...
单项选择题When using keyboard shortcuts, which keystroke combination allows users to erase a single word to the left of the cursor?（）
A. Ctrl + a B. Ctrl + e C. Ctrl + u D. Ctrl + w
When using keyboard shortcuts, which single keystroke c...
单项选择题When using keyboard shortcuts, which single keystroke combination allows users to erase the entire current command?（）
