What does the DMN Test Lab perform?

The DMN Test Lab is primarily designed to check expected results against the calculated results. This functionality is critical in the context of Decision Model and Notation (DMN), as it allows users to validate that decision models produce the correct outcomes based on given inputs. By performing these tests, users can ensure that their models are not only consistent but also reliable and effective in decision-making scenarios.

In contrast, while the other options relate to various functionalities or features associated with process management, they do not specifically define the main purpose of the DMN Test Lab. Validating diagram consistency refers more to the overall structural integrity of BPMN or other process models, and connecting to other tools or linking to diagrams does not directly pertain to the testing and validation aspect that the DMN Test Lab emphasizes. Thus, focusing on checking the alignment of expected and actual results is what distinctly characterizes the DMN Test Lab's function.