CISSP Question #599: Real Exam Question with Answer & Explanation

Question

Which of the following is a characteristic of the independent testing of a program?

Options

• AIndependent testing increases the likelihood that a test will expose the effect of a hidden feature.
• BIndependent testing decreases the likelihood that a test will expose the effect of a hidden feature.
• CIndependent testing teams help decrease the cost of creating test data and system design
• DIndependent testing teams help identify functional requirements and Service Level Agreements

Explanation

Independent testing refers to having a separate team (not the original developers) test software, which brings an unbiased perspective and increases the chance of discovering defects including hidden or undocumented features.

Common mistakes.

• B. This is the opposite of reality; independent testing actually increases the likelihood of exposing hidden features precisely because testers have no prior knowledge of or attachment to the code's intended behavior.
• C. Independent testing teams typically increase costs because they require additional resources, onboarding, and communication overhead; they do not help decrease the cost of creating test data or system design.
• D. Functional requirements and Service Level Agreements (SLAs) are defined during the requirements and planning phases of the SDLC, not identified by independent testing teams whose role is to validate and verify the software after development.

Concept tested. Benefits of independent software testing teams

Reference. https://csrc.nist.gov/publications/detail/sp/800-115/final

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