software reliability and fault tolerance Mcqs
1. All fault-tolerant techniques rely on__________________?
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A. Dependability

B. Redundancy

C. Integrity

D. None of the mentioned

2. Which of the following approaches are used to achieve reliable systems?
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A. Fault removal

B. Fault tolerance

C. All of the mentioned

D. Fault prevention

3. Which one of the following is not a software quality model ?
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A. ISO 9000

B. McCall model

C. ISO 9126

D. Boehm model

4. How many levels are present in CMM ?
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A. three

B. four

C. five

D. six

5. A system maintaining its integrity while accepting a temporary halt in its operation is said to be in a state of___________________?
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A. Fail Safe

B. Full Fault Tolerance

C. Fail Soft

D. Graceful Degradation

6. The CMM model is a technique to____________________?
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A. all of the mentioned

B. automatically maintain the software reliability

C. improve the software process

D. test the software

7. In N-version programming which is the independent generation of N, the value of N is___________________?
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A. less than 2

B. less than 1

C. greater than 1

D. greater than 2
8. Failure In Time (FIT) is another way of reporting __________________?
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A. MTTR

B. MTSF

C. MTTF

D. MTBF
9. In ISO 9126, time behavior and resource utilization are a part of___________________?
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A. efficiency

B. usability

C. maintainability

D. portability

10. Which of the following is not a phase of bathtub curve of hardware reliability ?
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A. Burn-in

B. Time

C. Wear-out

D. Useful Life

11. Which of the following Error Detection checks is not a part of Application detection ?
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A. Hardware checks

B. Timing checks

C. Coding checks

D. Reversal checks

12. How many product quality factors are proposed in McCall quality model ?
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A. 8

B. 11

C. 3

D. 2

13. What is MTTF ?
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A. None of the mentioned

B. Mean time to failure

C. Maximum time to failure

D. Minimum time to failure

14. NHPP stands for__________________?
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A. Non Homogeneous Poisson Product

B. Non Homogeneous Poisson Process

C. Non-Hetrogeneous Poisson Product

D. Non-Hetrogeneous Poisson Process

15. What type of fault remains in the system for some period and then disappears ?
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A. Transient

B. Permanent

C. Intermittent

D. All of the mentioned

16. Which one is not a software quality model ?
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A. ISO 9126

B. Boehm model

C. ISO 9000

D. McCall model

17. Which level of CMM is for process management ?
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A. Defined

B. Initial

C. Optimizing

D. Repeatable

18. Exception handling is a type of_________________?
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A. backward error recovery mechanism

B. None of the mentioned

C. All of the mentioned

D. forward error recovery mechanism
19. Non-occurrence of improper alteration of information is known as___________________?
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A. Available Dependability

B. Integral Dependability

C. Maintainable Dependability

D. Confidential Dependability

20. Software reliability is defined with respect to____________________?
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A. quality

B. failures

C. bugs

D. time
21. Which of the following is not a Probabilistic Model ?
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A. Error seeding

B. Halsteads software metric

C. NHPP

D. Input domain

22. It is imperative for a communicating processes to reach consistent recovery points to avoid the __________________ effect, with backward error recovery mechanism ?
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A. Whirlpool

B. Domino

C. Static

D. Dynamic

23. How is reliability and failure intensity related to each other ?
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A. none of the mentioned

B. inverse relation

C. direct relation

D. no relation

24. How is software reliability defined ?
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A. quality

B. efficiency

C. speed

D. time

25. Suitability, Accuracy, Interoperability, and security are what type quality attribute of ISO 9126 ?
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A. Efficiency

B. Reliability

C. Usability

D. Functionality
26. MTTF stands for___________________?
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A. None of the mentioned

B. Minimum time to failure

C. Maximum time to failure

D. Mean time to failure
27. Time Behavior and Resource Behavior fall under which quality attribute of ISO 9126 ?
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A. Usability

B. Efficiency

C. ity

D. Functionality

28. IMC Networks is a leading __________________ certified manufacturer of optical networking and LAN/WAN connectivity solutions for enterprise, telecommunications and service provider applications ?
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A. D-Link

B. ISO 9001

C. Arista Networks

D. Telco Systems