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ISC2 CC Practice Question: Which TWO of the following are principles of the…
Which TWO of the following are principles of the CIA triad? (Select TWO.)
⚠ Common exam trap
ISC2 often tests candidates by listing security concepts like non-repudiation or authorization as distractors, expecting you to know that the CIA triad strictly includes only confidentiality, integrity, and 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
✓
Confidentiality
Confidentiality is a core principle of the CIA triad, ensuring that data is accessible only to authorized entities. This is typically enforced through encryption (e.g., AES-256) and access control mechanisms, preventing unauthorized disclosure.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Confidentiality
Why this is correct
Correct. Confidentiality is part of CIA.
- ✓
Integrity
Why this is correct
Correct. Integrity is part of CIA.
- ✗
Non-repudiation
Why it's wrong here
Non-repudiation is not part of the CIA triad.
- ✗
Accountability
Why it's wrong here
Accountability is not part of CIA.
- ✗
Authorization
Why it's wrong here
Authorization is not part of CIA.
Quick reference
Symmetric Encryption Algorithm Comparison
| Algorithm | Key Size | Block Size | Status | Notes |
|---|---|---|---|---|
| AES-128 | 128-bit | 128-bit | Current standard | NIST approved; WPA3, TLS |
| AES-256 | 256-bit | 128-bit | Current standard | Preferred for sensitive / govt data |
| 3DES | 112-bit effective | 64-bit | Deprecated (2023) | Replaced by AES |
| DES | 56-bit | 64-bit | Broken | Cracked in < 24 h; never deploy |
| ChaCha20 | 256-bit | Stream cipher | Current | TLS 1.3, WireGuard |
Go deeper
Related to this question
Learn chapter
Introduction to Security Principles
Key term
Encryption
Encryption is the process of converting readable data into a secret code to prevent unauthorized access.
Key term
CIA triad
The CIA triad is a foundational security model that guides organizations in protecting data through confidentiality, integrity, and availability.
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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.