mediumMultiple ChoiceObjective-mapped
CRISC Practice Question: Refer to the exhibit
Exhibit
{
"controlTest": {
"controlId": "AC-01",
"testId": "T12345",
"testDate": "2023-06-15",
"testResult": "pass",
"notes": "Sample of 30 logins; all authenticated via MFA."
}
}Refer to the exhibit. If the control objective is to prevent unauthorized access via MFA, what does this test result indicate?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The control is effective for the sample but may not be for the population.
The test result is based on a sample of 30 logins, so it indicates effectiveness for that sample but cannot guarantee effectiveness for the entire population. Option A is wrong because the sample size alone does not determine ineffectiveness; it is about the sample's representativeness. Option B is wrong because a single sample cannot prove full effectiveness. Option C is wrong because the test does not assess whether MFA is required for all users; it tests operational effectiveness for the sampled logins.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
The control is ineffective because only 30 logins were sampled.
Why it's wrong here
A sample of 30 can be valid; ineffectiveness is not implied by sample size alone.
- ✗
The control is fully effective.
Why it's wrong here
A sample cannot confirm full effectiveness.
- ✗
The control is effective only if MFA is required for all users.
Why it's wrong here
The test does not address the policy requirement; it tests the control as implemented.
- ✓
The control is effective for the sample but may not be for the population.
Why this is correct
Test results apply only to the sample tested.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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