Free CompTIA Linux+ Questions

If a PAM module has the control flag of requisite and it fails what happens next?

A. Authentication fails but only after the rest of the stack is processed.
B. Authentication fails immediately.
C. Authentication fails only if another item in the module also fails.
D. PAM processes the module that's specified as a module option to the item with the requisite control flag.

Answer: B

PAM only processes other modules using the include or substack module flag.

Authentication only fails if another module fails when using the sufficient control flag.

Authentication fails but the rest of the stack finishes processing with the required control flag.