What skills are utilized in white-box testing?

• A. Social engineering techniques
• B. Networking protocol analysis
• C. Programming skills and an internal perspective of the system
• D. User interface design

Answer: (C)

White-box testing relies on having full visibility into the system’s internals, so the skills that matter most are programming abilities and an internal understanding of how the software is built. With access to source code, design documents, and internal data flows, a tester can read and reason about the logic, data handling, and control paths, then craft precise test cases, perform static code analysis, and reason about security flaws at the root cause. This lets you spot issues that aren’t easily visible from the outside, such as insecure coding patterns, logic errors, and authentication or input-validation gaps, by tracing how data moves and how decisions are made inside the application.

Social engineering techniques don’t focus on the software’s internals and are more about manipulating people to reveal information. Networking protocol analysis concentrates on how data travels over the network rather than how the software processes that data internally. User interface design deals with what the software looks like and how users interact with it, which is not the primary area for uncovering internal security weaknesses.