Discuss ISC2 CISSP Exam Topic 5 Question 119

Which of the following statements is TRUE regarding value boundary analysis as a functional software testing technique?

AIt is useful for testing communications protocols and graphical user interfaces.

BIt is characterized by the stateless behavior of a process implemented in a function.

CTest inputs are obtained from the derived threshold of the given functional specifications.

DAn entire partition can be covered by considering only one representative value from that partition.

Suggested Answer: C

Value boundary analysis is a functional software testing technique that tests the behavior of a software system or component when it receives inputs that are at the boundary or edge of the expected range of values. Value boundary analysis is based on the assumption that errors are more likely to occur at the boundary values than at the normal values. Test inputs are obtained from the derived threshold of the given functional specifications, such as the minimum, maximum, or just above or below the boundary values.Value boundary analysis can help identify errors or defects in the software system or component that may cause unexpected or incorrect outputs, crashes, or failures34Reference:CISSP All-in-One Exam Guide, Eighth Edition, Chapter 8: Software Development Security, p. 497;Official (ISC)2 CISSP CBK Reference, Fifth Edition, Domain 8: Software Development Security, p. 1015.

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12 comments · newest first

Brett 2 months ago

I feel option D is misleading. Covering a partition with one value seems risky.

Luis 2 months ago

I disagree. I lean towards A. Testing GUIs is crucial for value boundary analysis.

Stephanie 2 months ago

I think option C is true. It makes sense to derive inputs from specifications.

Haydee 2 months ago

C) is spot on!

Marva 2 months ago

Wait, is B) really a thing?

Alonso 2 months ago

D) sounds a bit off to me.

Stephanie 3 months ago

I think C) makes more sense, though.

Isidra 3 months ago

A) is definitely true for GUIs!

Ngoc 3 months ago

I’m confused about B; I thought value boundary analysis was more about the input values rather than the process behavior itself.

Margot 3 months ago

I practiced a question similar to this, and I feel like A could be misleading since it's more about numerical boundaries than protocols or GUIs.

Luisa 3 months ago

I'm not entirely sure, but I remember something about representative values covering partitions, which might relate to option D.

Luis 4 months ago

I think value boundary analysis is about testing inputs at the edges of valid and invalid ranges, so maybe option C sounds right?

ISC2 CISSP Exam - Topic 5 Question 119 Discussion