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200-201 Practice Question: Which THREE are principles of the CIA triad?…
Which THREE are principles of the CIA triad? (Select three.)
⚠ Common exam trap
Cisco often tests the distinction between the CIA triad and other security principles like non-repudiation or accountability, leading candidates to mistakenly include them as part of the triad when they are separate concepts.
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
The CIA triad is the foundational security model consisting of Confidentiality, Integrity, and Availability. Option B (Confidentiality) is correct because it ensures that data is accessible only to authorized users, typically enforced through encryption (e.g., AES-256) and access control lists (ACLs).
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Non-repudiation
Why it's wrong here
Non-repudiation is not part of the CIA triad; it is an additional security goal.
- ✓
Confidentiality
Why this is correct
Confidentiality is a core principle of the CIA triad.
- ✗
Accountability
Why it's wrong here
Accountability is not part of the CIA triad.
- ✓
Integrity
Why this is correct
Integrity is a core principle of the CIA triad.
- ✓
Availability
Why this is correct
Availability is a core principle of the CIA triad.
Visual reference
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 |
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This 200-201 practice question is part of Courseiva's free Cisco 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 200-201 exam.