- A
Lower the sensitivity threshold
Why wrong: Lowering threshold increases FAR and decreases FRR; the opposite is needed to reduce FRR? Wait: FRR is false rejection, so to reduce FRR you need to be more tolerant, i.e., lower threshold. But the question asks minimize FRR, so lower threshold is correct. But double-check: In biometrics, as threshold decreases, FAR increases, FRR decreases. So to minimize FRR, lower threshold. However, the option says 'Lower the sensitivity threshold' – that could be interpreted as making it less sensitive, i.e., lower threshold. But typical wording: 'lower threshold' reduces FRR. I'll keep it as correct.
- B
Increase enrollment sample quality
Why wrong: Better enrollment reduces both FAR and FRR, but the most direct adjustment is threshold setting.
- C
Use liveness detection
Why wrong: Liveness detection reduces spoofing but does not significantly affect false rejection rate.
- D
Store templates securely
Why wrong: Secure storage protects templates but does not affect FRR.
CISSP Identity and Access Management Practice Question
This CISSP practice question tests your understanding of identity and access management. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
An organization is implementing biometric authentication. Which factor should be considered to minimize the false rejection rate?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue:
"minimum / minimize"Why it matters: Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.
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 threshold setting balances FRR and FAR; reducing threshold increases FAR but decreases FRR. Liveness detection prevents spoofing, enrollment quality affects overall accuracy, and template storage is about security.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Lower the sensitivity threshold
Why it's wrong here
Lowering threshold increases FAR and decreases FRR; the opposite is needed to reduce FRR? Wait: FRR is false rejection, so to reduce FRR you need to be more tolerant, i.e., lower threshold. But the question asks minimize FRR, so lower threshold is correct. But double-check: In biometrics, as threshold decreases, FAR increases, FRR decreases. So to minimize FRR, lower threshold. However, the option says 'Lower the sensitivity threshold' – that could be interpreted as making it less sensitive, i.e., lower threshold. But typical wording: 'lower threshold' reduces FRR. I'll keep it as correct.
- ✗
Increase enrollment sample quality
Why it's wrong here
Better enrollment reduces both FAR and FRR, but the most direct adjustment is threshold setting.
- ✗
Use liveness detection
Why it's wrong here
Liveness detection reduces spoofing but does not significantly affect false rejection rate.
- ✗
Store templates securely
Why it's wrong here
Secure storage protects templates but does not affect FRR.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
- Use explanations to understand the rule behind the answer.
TExam Day Tips
- Underline the problem statement mentally.
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A security analyst at a medium-sized enterprise encounters this scenario during an investigation or architecture review. The correct answer reflects best practice for the specific threat or control described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Security exam questions test whether you can match controls to threats in context — not just recall definitions.
What to study next
Got this wrong? Here's your next step.
Identify which CISSP exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
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Identity and Access Management — study guide chapter
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FAQ
Questions learners often ask
What does this CISSP question test?
Identity and Access Management — This question tests Identity and Access Management — Read the scenario before looking for a memorised answer..
What exam trap should I watch out for?
Common exam trap: answer the scenario, not the keyword: Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
What should I do if I get this CISSP question wrong?
Identify which CISSP exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Are there clue words in this question I should notice?
Yes — watch for: "minimum / minimize". Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
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Last reviewed: Jun 24, 2026
This CISSP practice question is part of Courseiva's free ISC2 certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the CISSP exam.
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