Q. What is the definition of reliability in the context of software systems?

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Q. What is the difference between execution time and calendar time in the context of software reliability?

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Q. What are some factors that can affect the failure behavior of a program?

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Q. What is the reason for the uncertainty in the expected time of software failure?

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Q. What is the purpose of modeling subsequent failures as a stochastic process?

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Q. What is the meaning of non-homogeneous Poisson process?

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Q. What is the relationship between failure intensity function and the number of failures observed?

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Q. What is the basic execution time model (BM)?

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Q. What is the difference between the basic execution time model (BM) and the logarithmic Poisson execution time model (LPM)?

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Q. How many parameters does the BM model have?

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Q. What is the definition of operational profile?

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Q. What is the shape of the failure intensity curve in case of a strong non-uniform operational profile?

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Q. What is the relationship between the failure intensity and mean failures in both BM and LPM models?

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Q. Does the effectiveness of fault correction remain constant over time in the BM model?

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Q. Does the expected number of failures in infinite time in the LPM model become infinite?

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Q. How does the effectiveness of fault correction change with time in the LPM model?

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Q. What is the number of failures expected in a certain time period in both BM and LPM models when faults are not being corrected anymore?

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Q. What are the techniques used to estimate the parameters in BM and LPM models?

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Q. What is the importance of early testing activities in software development?

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Q. What are the most commonly used manual test techniques in software development?

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