單項(xiàng)選擇題

Which statement is correct about the information shown in the exhibit?（）

A. The factory-default configuration is running on the device.
B. The Junos OS was corrupted and did not boot correctly.
C. The device was recently upgraded to a newer version of the Junos OS.
D. The device's memory has been corrupted and no file system is present after a reboot.

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多項(xiàng)選擇題

Which two statements are true regarding rescue configurations?（）

A. Once saved, a rescue configuration is loaded using the rollback 0 command.
B. The rescue configuration must contain the minimal elements necessary to restore network connectivity.
C. A minimal rescue configuration is defined by default.
D. A rescue configuration must include a root password.

多項(xiàng)選擇題

Which two statements are true of login classes?（）

A. Users can be members of multiple login classes.
B. Login classes define authorization parameters for a user.
C. There are five system-defined login classes.
D. Login class permission flags can be overridden for certain commands.