单项选择题 You configured an interface with an IP address and committed the change. You then committed a change that added an exception in a firewall filter to allow this network through the filter. You realize that this work was done on the wrong router. How do you undo all these changes?（）

多项选择题 Which two statements are true when using the configure exclusive CLI command?（）

多项选择题 Which two statements apply when a user has entered private configuration mode by typing configure private?（）