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Grade 9: Computing subject test

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Subject practice test

Choose an answer for each problem. Explain your method on paper, then use the feedback to decide what to revisit.

1. Backups stored only with the vulnerable original. Which threat-model role is described?ControlVulnerabilityAssetThreat

2. A verified security fix is available for the stated flaw. Which control addresses the weakness?Apply verified updateServer authorization checkSeparate protected backupStronger authentication

3. Paper clock: last usable backup at hour 16; failure at hour 24. Maximum later-work time absent from this backup?40 hours16 hours9 hours8 hours

4. A real account would be reset for the test. Which recovery evidence is present?Copy exists, restore unverifiedBackup absentUnsafe overwrite proposedSynthetic restore verified

5. Paper Python 3 expression: " x y ".strip(). What value results?'x y ''x y''y x''x y?'

6. Request the identifier field. CSV row: A,"red,blue",5. Which parsed field is requested?Ared,blue5No fourth field

7. The pair of tag values in brackets. Object: {"id":"007","count":5,"done":true,"tags":["red","blue"]}. Which value type is requested?TextNumberBooleanArray

8. Only original would be replaced before validation. Which stated plan fits the purpose?Write separate derived fileAppend to permitted logUnsafe overwrite of required originalRead original

9. A calculation converts minutes into hours. Which provenance element is described?Measure definitionTransformationSourceCollection date

10. Fictional log has 18 completed attempts among 24 total attempts. Attempt completion percentage?75%133.333%76%300%

11. Outcome improved after an event but alternatives remain. Which evidence is stated?Calculation reproducedPopulation coverage unverifiedInput source unverifiedCause unverified

12. Real-device behavior has not been exercised. Classify the report item.Confirmed failureExplicitly deferredUnverified checkVerified in stated check

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