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 In the MVC pattern, which component is responsible for user interface display?

In a reporting application, the Report class generates reports in different formats (PDF, Excel, HTML). Whenever a new format is added, you need to modify the Report class to include the new logic for report generation.How can this design be improved to adhere to the Open-Closed Principle?

System testing is done to test:

What is the main purpose of software testing?

Which architectural pattern is not suitable for interactive systems?

Which type of model shows how a system that is being modeled is positioned in an environment with other systems and processes, illustrating what lies outside the system boundaries?

What is the main output of the architectural design process?

Which UML diagram type models interactions between a system and its environment?

Which principle advises that “High-level modules should not depend on low-level modules. Both should depend on the abstraction”?

Use case diagrams and sequence diagrams are primarily used for which type of system modeling?