Which term describes values just inside or outside the specified limits?

• A. Abnormal test data
• B. Extreme test data
• C. Boundary test data
• D. Trace table

Answer: (C)

Boundary testing focuses on the edges of input ranges. It checks values at the limits where behavior often changes, including just inside and just outside the allowed limits. These edge cases catch off-by-one and boundary-condition errors that might not appear with typical inputs. The term that matches this idea is boundary test data, since it specifically targets those near-edge values to ensure the program handles them correctly. Abnormal test data is broader and not tied to the exact edge of limits, extreme test data looks at far-out values rather than just inside or outside the boundary, and a trace table is a record of steps in an algorithm, not a type of input data.