Which document would describe the architecture of an application?

Which document would describe the architecture of an application?

• A. Requirements Definition
• B. Ex-Frame-Options
• C. System Design Document
• D. Test Plans

Answer: (C)

This question tests your ability to identify which document communicates how an application is structured. The System Design Document describes the architecture—the major components, how they interact, data flows, interfaces, deployment, and nonfunctional considerations—providing a blueprint for developers to follow. A Requirements Definition focuses on what the system should do from business and user perspectives, not how it’s built. Test Plans explain how to verify that the system works and meets requirements, not its internal structure. The Ex-Frame-Options item is a distractor tied to a specific security setting rather than architectural planning. So, the System Design Document is the best fit because it explicitly communicates the architecture of the application.