To answer this question, you need to understand the SessionFacade pattern and its advantages. Let's go through each option to understand why it is correct or incorrect:
Option A) Hides model complexity from the client - This option is correct. One of the advantages of using the SessionFacade pattern is that it hides the complexity of the underlying model from the client. The client only needs to interact with the simplified interface provided by the SessionFacade.
Option B) Reduces network traffic - This option is correct. Another advantage of using the SessionFacade pattern is that it can help reduce network traffic. By encapsulating multiple operations into a single method call, the SessionFacade can minimize the number of network requests required.
Option C) Provides a simple interface to the client - This option is correct. The SessionFacade pattern provides a simple interface to the client. Instead of having to interact with multiple components or services directly, the client can use the SessionFacade as a single entry point for its operations.
Option D) Enables the client to control transactions - This option is incorrect. The SessionFacade pattern does not enable the client to control transactions directly. Instead, it encapsulates the transaction management logic within the SessionFacade itself. The client interacts with the SessionFacade, but it does not have control over the transaction boundaries.
The correct answer is D) Enables the client to control transactions. This option is incorrect because the SessionFacade pattern does not provide this advantage.