What is required for each source that supports password changes?

For each source that supports password changes, it is essential that it is associated with a password policy. This requirement ensures consistency in how passwords are handled, including the criteria for creating, changing, or resetting passwords. A password policy lays out the rules and guidelines that govern password complexity, expiration, and reuse, providing a framework that helps enforce security throughout the organization.

When each source adheres to the same password policy, it reduces the risk of weak or easily compromised passwords being used across various systems and applications. By maintaining alignment with a specified password policy, the organization can enhance its overall security posture and better manage user identities and access privileges. This focus on having a defined policy supports compliance and facilitates auditing efforts as well.

While the other options may relate to broader aspects of identity management and organizational policies, they do not specifically address the foundational need for a password policy to govern how password changes are implemented across various sources.