Which type of test design techniques does the following statement best describe? A procedure to derive test cases based on the specification of a component.

Question

Options

• ABlack Box Techniques.
• BWhite Box Techniques.
• CGlass Box Techniques.
• DExperience Based Techniques.

• A
  75% (27)
• B
  8% (3)
• C
  14% (5)
• D
  3% (1)

Explanation

Black Box Techniques (A) are correct because they derive test cases purely from the specification (requirements, design docs) without any knowledge of the internal code structure - exactly what the statement describes.

Why the distractors are wrong:

• B & C (White Box / Glass Box) - these are actually the same concept (Glass Box is just another name for White Box); both require knowledge of the internal code structure, not just the specification.
• D (Experience Based) - these rely on the tester's intuition and past experience (e.g., error guessing), not on formal specification analysis.

Memory tip: Think of a black box as a sealed machine - you only know what goes in (inputs/spec) and what comes out (outputs), never what's inside. If the test design ignores the internals and works from the spec alone, it's Black Box.

No community discussion yet for this question.