How can you reset your router or switch to factory defaults?（）

单项选择题Which command would allow you to compare two files stored on your router?（）

A.user@host>file show filename1 compare filename2
B.user@host>file compare files filename1 filename2
C.user@host>compare files filename1 filename2
D.user@host>compare filename1 filename2

单项选择题You have just issued the command commit confirmed and your network continues to be operational with no further changes required. You issue a commit and-quit. A short time later, users start complaining about network problems. Which commands (in order) need to be entered to resolve this issue?（）

A.A
B.B
C.C
D.D

单项选择题Which method loads the configuration which was active before your last commit?（）

A.load replace last-active
B.load rollback 1
C.rollback 1
D.rollback last-active

单项选择题You enter configuration mode with the configure command. You need to abort the changes that you have made and start again with a fresh copy of the active configuration. Which command should you use?（）

A.rollback 0
B.load active
C.reset config
D.clear candidate config

单项选择题You are the top of the hierarchy in configuration mode. How would you save your configuration to a file on the router?（）

A.save configuration <filename>
B.save config <filename>
C.save <filename>
D.save run <filename>