Which data masking rule is based on the source datatype and masking type configured for a port?

Dynamic masking is the correct answer because it involves modifying the data based on the data type of the source and the specific masking type assigned during the configuration process. This method allows for real-time masking of sensitive data, ensuring that unauthorized users can access a transformed version of the data that maintains certain characteristics while protecting sensitive information.

In dynamic masking, as the data is accessed or queried, the masking occurs on-the-fly, thus preserving the original attribute structures but obfuscating sensitive details according to the defined rules. This flexibility makes it particularly useful in environments where data privacy regulations must be adhered to while still allowing data analysis capabilities.

Other options do not address the real-time and type-specific nature that dynamic masking offers. Format-based masking, for example, typically refers to a predefined structure of how data should be masked (like applying a consistent format), but it does not adapt based on data access or user roles in real-time. Static masking, on the other hand, involves permanently altering the data rather than dynamically changing it during access. Configurable masking may involve a setup process but does not specifically highlight the unique combination of source datatype and masking behavior as directly as dynamic masking does.