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Functional Verification in Design

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Questions and Answers

What is the purpose of a grey-box test case?

To predict correct results on the interface

To increase coverage metrics (correct)

To ensure that the design meets the functionality intent

To drive all permutations on the input lines

Why is full verification not practical on large pieces of designs?

Because it entails driving all permutations on the input lines (correct)

Because it is intended to exercise significant features specific to the implementation

Due to the difficulty in predicting correct results on the interface

Because the principles of verification are not valid across all verification

How does a grey-box test case differ from a black-box test case?

It drives all permutations on the input lines

It predicts correct results on the interface without viewing internal signals

It is written to increase coverage metrics (correct)

It ensures that the design meets the functionality intent

What is the reconvergence model for testing focused on?

Verifying that the design was manufactured properly Signup and view all the answers

What is the main purpose of functional verification?

To ensure that a design implements intended functionality Signup and view all the answers

What is the primary focus of formal verification?

Proving or disproving the correctness of intended algorithms using formal methods Signup and view all the answers

Why is it impossible to prove that a design meets the intent of its specification?

Due to varying degrees of ability in communicating intentions with natural languages Signup and view all the answers

What does functional verification attempt to answer?

Whether the proposed design does what is intended Signup and view all the answers

What is the main limitation of the black-box approach to functional verification?

Inability to access the internal state of the design Signup and view all the answers

Which type of design can be verified using a black-box approach?

Designs with well-documented functions Signup and view all the answers

What is a key challenge of using the black-box approach for functional verification?

Locating the source of the problem in the design Signup and view all the answers

What is the primary purpose of a black-box approach to functional verification?

To perform verification without knowledge of the actual implementation Signup and view all the answers