401. A chemical plant system may detect excessive pressure and open a relief valve to reduce these pressures before an explosion occurs. What kind of dependability and security issue the example states ?
A. Hazard avoidance
B. Damage limitation
C. Hazard detection
D. Hazard detection and removal
Explanation:
The system is designed so that hazards are detected and removed before they result in an accident.
402. 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.
403. An erroneous system state that can lead to system behavior that is unexpected by system users is known as________________?
A. Human error or mistake
B. System fault
C. System error
D. System failure
404. An assessment of the worst possible damage that could result from a particular hazard is known as _________________?
A. Risk
B. Hazard probability
C. Hazard severity
D. Mishap
405. A password checking system that disallows user passwords that are proper names or words that are normally included in a dictionary is an example of ________________ with respect to security systems?
A. risk
B. control
C. attack
D. asset
Explanation:
A control protective measure that reduces a system’s vulnerability.
406. A weakness in a computer-based system that may be exploited to cause loss or harm is known as ?
A. Vulnerability
B. Attack
C. Threat
D. Exposure
407. Consider a case where the system is unavailable and cannot deliver its services to users. 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
Explanation:
One may separate this into loss of critical services and loss of non-critical services, where the consequences of a failure in non-critical services are less than the consequences of critical service failure.
408. An event that occurs at some point in time when the system does not deliver a service as expected by its users is called __________________?
A. Human error or mistake
B. System fault
C. System error
D. System failure
409. How many stages are there in Risk-driven requirements specification ?
A. three
B. four
C. five
D. six
Explanation:
These include Risk identification, Risk analysis, Risk reduction and Risk decomposition
410. 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
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