Original course questions with explained answers. This assessment is for learning; it does not predict certification exam results.
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1. Which device matches the original condition?
- LAB-A only
- Both devices
- Neither device
Show answer and explanation for question 1
Correct answer: A. LAB-A only
9 < 10, but 10 < 10 is false.
2. Why return results from a function?
- To require admin access
- To separate calculation from display
- To remove all tests
Show answer and explanation for question 2
Correct answer: B. To separate calculation from display
Returned values can be tested and reused independently.
3. Which test is especially useful for threshold logic?
- Only a typical value
- Only file size
- A value exactly at the boundary
Show answer and explanation for question 3
Correct answer: C. A value exactly at the boundary
Equality reveals < versus <= mistakes.
4. The rule flags free capacity below 10%. A valid row has free_pct 10. Which result fits the rule?
- OK, because exactly 10 is outside the strict below-10 condition.
- REVIEW, because 10 is close to the threshold.
- INVALID, because a threshold value cannot be classified.
Show answer and explanation for question 4
Correct answer: A. OK, because exactly 10 is outside the strict below-10 condition.
A strict boundary is a requirement, not a judgement about closeness. Test 9, 10 and 11 independently. A change from < to <= incorrectly flags the boundary row.
5. A CSV capacity field contains unknown. Which reporting behavior preserves the evidence?
- Replace unknown with zero so the field stays numeric.
- Mark the row invalid and retain the raw source value and reason.
- Drop the row and call the remaining population healthy.
Show answer and explanation for question 5
Correct answer: B. Mark the row invalid and retain the raw source value and reason.
Unknown is not measured zero. Conversion or silent deletion creates an unsupported conclusion. The report keeps a rejected value visible so the collector and analyst can investigate it.
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