Which of the following describes the function of a Pluggable Authentication Module (PAM) on a
Linux system?

A.
If enabled, it allows you to block or enable root-based login on a Linux system.

B.
If enabled, it runs a check on the login to determine authentication measures.

C.
It is a mandatory part to the Linux login process.

D.
It is a method for ensuring access control.

Explanation: