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dependability and security MCQs

Practise focused dependability and security questions with marked answers for exam preparation and subject revision.

dependability and security Mcqs
1. The use of a well-defined, repeatable process is essential if faults in a system are to be minimized ?
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A. FALSE

B. True
2. The records of each patient that is receiving or has received treatment resembles which security concept ?
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A. Control

B. Asset

C. Threat

D. Vulnerability

3. Choose the fault class in which the following automated static analysis check would fall: Unreachable code?
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A. Data Faults

B. Interface faults

C. Input/Output Faults

D. Control Faults
4. Which reliability requirements are concerned with maintaining copies of the system ?
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A. Recovery requirements

B. Redundancy requirements

C. Ambiguous requirements

D. Checking requirements

5. Which reliability metric sets out the probable number of system failures that are likely to be observed relative to a certain time period ?
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A. AVAIL

B. None of the mentioned

C. ROCOF

D. POFOD

6. Which level of Static Analysis allows specific rules that apply to a program to be checked ?
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A. Characteristic error checking

B. All of the mentioned

C. User-defined error checking

D. Assertion checking

7. A characteristic of a software system that can lead to a system error is known as _____________________ ?
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A. Human error or mistake

B. System failure

C. System error

D. System fault
8. An aircraft engine normally includes automatic fire extinguishers.What kind of dependability and security issue the example states ?
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A. Hazard detection

B. Hazard detection and removal

C. Damage limitation

D. Hazard avoidance

9. What is the term for a system that is designed such that the faults in the delivered software do not result in system failure ?
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A. Fault detection

B. Fault Avoidance

C. Fault tolerance

D. None of the mentioned

10. An erroneous system state that can lead to system behavior that is unexpected by system users is known as________________?
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A. System failure

B. Human error or mistake

C. System error

D. System fault

11. Choose the fault class in which the following automated static analysis check would fall:Non-usage of the results of functions?
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A. Input/Output Faults

B. Data Faults

C. Interface faults

D. Storage management faults

12. Which of the following terms is a measure of the probability that the system will cause an accident ?
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A. Hazard probability

B. Accident

C. Risk

D. Damage

13. At which stage of risk analysis specification, the additional security requirements take account of the technologies used in building the system and system design and implementation decisions ?
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A. All of the mentioned

B. Operational risk analysis

C. Life-cycle risk analysis

D. Preliminary risk analysis

14. A weakness in a computer-based system that may be exploited to cause loss or harm is known as ?
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A. Attack

B. Exposure

C. Vulnerability

D. Threat

15. The safety of a system is a system attribute that reflects the systems ability to operate, normally or abnormally, without injury to people or damage to the environment ?
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A. True

B. FALSE

16. What is Life cycle risk assessment ?
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A. None of the mentioned

B. Risk assessment while the system is being developed

C. All of the mentioned

D. Risk assessment before the system has been deployed

17. Which of the following is not a functional reliability requirement for a system ?
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A. Ambiguous requirements

B. Redundancy requirements

C. Checking requirements

D. Recovery requirements

18. Which process characteristic with respect to Dependability Engineering is mentioned by the statement: The process should be understandable by people apart from process participants ?
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A. Auditable

B. None of the mentioned

C. Documentable

D. Diverse

19. How many stages are there in Risk-driven requirements specification ?
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A. four

B. six

C. three

D. five

20. Which of the following is a bad practice of Dependable programming ?
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A. Check all inputs for validity

B. None of the mentioned

C. Limit the visibility of information in a program

D. Check array bounds