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 ? A. Preliminary risk analysisB. Life-cycle risk analysis C. Operational risk analysis D.…
Which reliability metric sets out the probable number of system failures that are likely to be observed relative to a certain time period ? A. POFODB. ROCOF C. AVAIL D. None of the mentioned Explanation: Rate of occurrence of failures…
To specify security requirements, one should identify the risks that are to be dealt with ? A. TrueB. False Explanation: To specify security requirements, one should identify the assets that are to be dealt with.
Which reliability requirements are concerned with maintaining copies of the system ? A. Checking requirementsB. Recovery requirements C. Redundancy requirements D. Ambiguous requirements Explanation: These requirements are geared to helg the system recover after a failure has occurred.
Which of the following is not a functional reliability requirement for a system ? A. Checking requirements B. Recovery requirements C. Redundancy requirementsD. Ambiguous requirements Explanation: All the options are correct except option d.
POFOD stands for___________________? A. Possibility of failure of data B. Probability of failure of data C. Possibility of failure on demandD. Probability of failure on demand
How many stages are there in Risk-driven requirements specification ? A. threeB. four C. five D. six Explanation: These include Risk identification, Risk analysis, Risk reduction and Risk decomposition
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 errorD. System failure
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…
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