Which management security process is used when a user logs in with a username and password?

Authentication is the process of verifying a user's identity, typically through credentials like a username and password. When a user provides these, the system checks if they match stored records. If they do, the user is authenticated and granted access. Auditing involves recording system events and user activities for security analysis, not the login process itself. Accounting tracks resource consumption by users, such as how much data they've used or how long they've been connected, which happens after successful authentication. Authorization determines what resources an authenticated user is permitted to access, defining their privileges, which also occurs after authentication.