Can clear-text and encrypted properties be defined in the same properties file?

• A. No; encrypted properties cannot coexist in the same file
• B. Yes; encrypted properties require the secure prefix
• C. Yes; encrypted properties can share a file with clear properties without any prefix
• D. No; they must be defined in separate files

Answer: (B)

Understanding encrypted values in a properties file comes down to how Mule identifies something that should be decrypted at runtime. In Mule, you can place both clear-text and encrypted properties in the same file. The crucial part is marking encrypted values with a secure prefix. That secure prefix tells the runtime, “this value is encrypted and must be decrypted using the configured secret store.” Clear-text values have no prefix and are used as-is. Because of this prefix mechanism, mixing both types in one file is perfectly supported.

So, the reason this option is the best is that the secure prefix is the explicit signal that a value is encrypted and needs decryption, allowing coexistence of encrypted and clear properties in the same file. The other options imply restrictions that don’t apply: encrypted values don’t have to be in separate files, and they don’t work correctly without the secure prefix.