ISC2 CC Security Principles Practice Question
Which of the following controls is primarily designed to ensure availability?
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
✓
Redundant servers
Redundancy (e.g., backup servers, failover) ensures systems remain available even if one component fails.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Redundant servers
Why this is correct
Redundant servers provide failover capability, maintaining availability.
- ✗
Encryption
Why it's wrong here
Encryption protects confidentiality.
- ✗
Digital signatures
Why it's wrong here
Digital signatures ensure integrity and non-repudiation.
- ✗
Access control lists
Why it's wrong here
Access control lists enforce confidentiality.
Go deeper
Related to this question
Learn chapter
Risk Management and Security Controls
Key term
Failover
Failover is the automatic switching to a backup system when the primary system fails, ensuring continuous operation and minimal downtime.
Key term
Availability
Availability is the measure of how often a system or service is operational and accessible when needed, typically expressed as a percentage of uptime.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This CC 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 CC exam.