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.
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.
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