A. Human error or mistake
B. System fault
C. System error
D. System failure
✅ The correct answer is option B.
Dependability and Security MCQs
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.
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.
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.
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.
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.
What is Life cycle risk assessment ?
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.
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.
Which of the following is a Strategy to achieve Software diversity ?
A. Different programming languages
B. Different design methods and tools
C. Explicit specification of different algorithms
D. All of the mentioned
✅ The correct answer is option D.
Explanation: Diversity means to provide the same functionality in different ways so that critical components of a dependable system will not fail in the same way.
Explanation: Diversity means to provide the same functionality in different ways so that critical components of a dependable system will not fail in the same way.
POFOD stands for___________________?
A. Possibility of failure of data
B. Probability of failure of data
C. Possibility of failure on demand
D. Probability of failure on demand
✅ The correct answer is option D.