Which statement is true about creating private networking overlays in the Autonomous Database?

Creating private networking overlays in the Oracle Autonomous Database is optional rather than mandatory. They serve as a means to enhance security and manage connectivity effectively, but they are not a prerequisite for using the Autonomous Database.

Option B accurately reflects this understanding, highlighting that users have the flexibility to choose whether or not to implement private networking overlays based on their specific requirements. This option allows for a more tailored approach to networking, where users can decide on the level of security and isolation they need for their databases.

In regards to the other options, stating that private networking overlays are only required for Dedicated deployments is misleading; they can be beneficial in both Shared and Dedicated environments but are not exclusive to one type. Similarly, the notion that overlays must be configured for all users does not align with the flexible nature of Oracle Autonomous Database architecture, where users can operate without mandatory overlays.