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CISA Match each security control to its category. Practice Question
Match each security control to its category.
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
✓
Firewall: Prevents unauthorized network access by filtering traffic.
Firewalls are preventive controls that block unauthorized access, IDS are detective controls that monitor and alert, and data backups are corrective controls that restore data after loss. The distractors swap these definitions.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Firewall: Prevents unauthorized network access by filtering traffic.
Why this is correct
Firewalls are preventive controls that block unauthorized access based on rules.
- ✓
Intrusion Detection System (IDS): Monitors network traffic for suspicious activity and alerts.
Why this is correct
IDS is a detective control that identifies and alerts on potential threats.
- ✓
Data Backup: Restores lost or corrupted data from copies.
Why this is correct
Data backup is a corrective control used to recover data after loss or corruption.
- ✗
Firewall: Monitors network traffic for suspicious activity and alerts.
Why it's wrong here
Incorrect — this describes an Intrusion Detection System, not a firewall.
- ✗
Intrusion Detection System (IDS): Restores lost or corrupted data from copies.
Why it's wrong here
Incorrect — this describes a data backup process, not an IDS.
- ✗
Data Backup: Prevents unauthorized network access by filtering traffic.
Why it's wrong here
Incorrect — this describes a firewall, not data backup.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This CISA 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 CISA exam.