hardMultiple ChoiceObjective-mapped
FC0-U71 Practice Question: A database administrator needs to ensure that…
A database administrator needs to ensure that only authorized users can access sensitive data. Which of the following concepts describes this requirement?
⚠ Common exam trap
Many exam-takers confuse confidentiality with integrity, mistakenly thinking that preventing unauthorized changes (integrity) is the same as preventing unauthorized viewing (confidentiality), but the CIA triad separates these clearly.
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 ensures that sensitive data is accessible only to authorized users, typically enforced through access controls, encryption, and authentication mechanisms. In database administration, this is implemented via permissions, roles, and encryption at rest (e.g., AES-256) to prevent 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.
- ✗
Availability
Why it's wrong here
Availability ensures data is accessible, not restricted to authorized users.
- ✗
Non-repudiation
Why it's wrong here
Non-repudiation provides proof of actions, not access control.
- ✗
Integrity
Why it's wrong here
Integrity prevents unauthorized modification, not access.
- ✓
Confidentiality
Why this is correct
Confidentiality restricts access to authorized personnel.
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 FC0-U71 practice question is part of Courseiva's free CompTIA 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 FC0-U71 exam.