LPIC-2 Certified Linux Engineer (202-450) (#58)

In a PAM configuration file, which of the following is true about the required control flag?

If the module returns success, no more modules of the same type will be invoked
The success of the module is needed for the module-type facility to succeed. If it returns a failure, control is returned to the calling application
The success of the module is needed for the module-type facility to succeed. However, all remaining modules of the same type will be invoked
The module is not critical and whether it returns success or failure is not important
If the module returns failure, no more modules of the same type will be invoked