When a user exists in multiple directories, which credentials are used to validate login?

• A. Credentials from the first directory in the specified order.
• B. Credentials from the last directory in the order.
• C. Credentials from a random directory.
• D. Credentials from all directories are merged for a single login.

Answer: (A)

When multiple directories exist, authentication follows a defined precedence so there’s a single, predictable source for validating credentials. If a user appears in more than one directory, the system uses the first directory in the configured order that contains that user to perform the login check. This means the credentials you enter are verified against that earliest directory, and a successful login depends on them being valid there. The setup avoids ambiguity and conflicting password data from different stores.

Choosing the last directory, a random directory, or merging credentials from all directories would create unpredictable behavior and potential security risks, so they aren’t how the login process is designed to work.