hardMultiple ChoiceObjective-mapped
CRISC Practice Question: Refer to the exhibit
Exhibit
[Critical] 2023-07-10 08:15:00 - Intrusion Prevention System Alert: Source IP: 10.0.1.15 (Internal) Destination: external malicious IP Rule: Outbound Malware Traffic Action: Blocked Control: Outbound Web Filtering (OWF) Prior alerts: 3 in past hour Threshold: 5 alerts within 1 hour triggers investigation
Refer to the exhibit. Based on the exhibit, what is the most appropriate action regarding the control OWF?
⚠ Common exam trap
Test-takers frequently assume no action is needed until the threshold is reached, but CRISC emphasizes proactive review when metrics approach thresholds to prevent control failures or misconfigurations.
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 should be reviewed because the alert frequency is approaching the threshold.
The exhibit shows that the OWF (Outbound Web Filtering) control has logged 95 alerts against a threshold of 100. Since the alert frequency is approaching but has not yet reached the threshold, the most appropriate action is to review the control to determine if the threshold is still appropriate or if the control needs tuning. Option C correctly identifies this proactive monitoring step, which aligns with the CRISC domain of Risk and Control Monitoring and Reporting.
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 effective because the traffic was blocked.
Why it's wrong here
Effectiveness in blocking does not address the frequency trend.
- ✗
The control is ineffective because alerts indicate potential malware.
Why it's wrong here
The control blocked the traffic, so it is effective; alerts indicate attempts, not failures.
- ✓
The control should be reviewed because the alert frequency is approaching the threshold.
Why this is correct
Proactive review can prevent reaching the threshold and identify root causes.
- ✗
No action is needed because the threshold has not been reached.
Why it's wrong here
Waiting for threshold may be reactive; proactive investigation is better.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This CRISC practice question is part of Courseiva's free ISACA 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 CRISC exam.