Which of the following would best describe the difference between white-box testing and black-box testing?

Which of the following would best describe the difference between white-box testing and black-box testing?
A .  White-box testing is performed by an independent programmer team.
B .  Black-box testing uses the bottom-up approach.
C .  White-box testing examines the program internal logical structure.
D .  Black-box testing involves the business units

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Answer: C

Explanation: Black-box testing observes the system external behavior, while white-box testing is a detailed exam of a logical path, checking the possible conditions. Source: Information Systems Audit and Control Association, Certified Information Systems Auditor 2002 review manual, chapter 6: Business Application System Development, Acquisition, Implementation and Maintenance (page 299).