A. Risk assessment before the system has been deployed
B. Risk assessment while the system is being developed
C. All of the mentioned
D. None of the mentioned
✅ The correct answer is option C.
Dependability and Security MCQs
32. Consider a case where the failure of the system causes damage to the system itself or it data. What type of failure is being described here ?
A. Loss of service
B. Incorrect service delivery
C. System/data corruption
D. None of the mentioned
✅ The correct answer is option C.
33. The safety of a system is a system attribute that reflects the system’s ability to operate, normally or abnormally, without injury to people or damage to the environment ?
A. True
B. False
Explanation: None.
✅ The correct answer is option A.
34. Choose the fault class in which the following automated static analysis check would fall:”Pointer Arithmetic” ?
A. Storage management faults
B. Data Faults
C. Input/Output Faults
D. Interface faults
✅ The correct answer is option A.
35. The use of a well-defined, repeatable process is essential if faults in a system are to be minimized ?
A. True
B. False
Explanation: The answer is self explanatory.
✅ The correct answer is option A.
36. Static analysis is now routinely used in the development of many safety and security critical systems?
A. True
B. False
Explanation: The static analyzer can discover areas of vulnerability such as buffer overflows or unchecked inputs
✅ The correct answer is option A.
37. What is the term for a system that is designed such that the faults in the delivered software do not result in system failure ?
A. Fault Avoidance
B. Fault detection
C. Fault tolerance
D. None of the mentioned
✅ The correct answer is option C.
38. A characteristic of a software system that can lead to a system error is known as _____________________ ?
A. Human error or mistake
B. System fault
C. System error
D. System failure
✅ The correct answer is option B.
39. Security engineering is only concerned with maintenance of systems such that they can resist malicious attacks ?
A. True
B. False
Explanation: Security engineering is concerned with maintenance as well as development of such systems.
✅ The correct answer is option B.
40. Select the disadvantage of using Formal methods ___________________?
A. Concurrent systems can be analysed to discover race conditions that might lead to deadlock
B. Producing a mathematical specification requires a detailed analysis of the requirements
C. They require the use of specialised notations that cannot be understood by domain experts
D. All of the mentioned
✅ The correct answer is option C.