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CISA Practice Question: Which THREE of the following are commonly…
Which THREE of the following are commonly accepted practices for securing mobile devices in an enterprise environment?
⚠ Common exam trap
Many candidates confuse 'best practice' with 'maximum security' and incorrectly select Option D (disable all third-party apps) as a valid control, failing to recognize that enterprise security requires balancing usability with risk management, and that containerization is the standard approach for BYOD environments.
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
✓
Use containerization for corporate data
Containerization (Option B) is a commonly accepted practice for securing mobile devices in an enterprise environment because it creates a separate, encrypted workspace on the device that isolates corporate data and applications from personal data. This approach, often implemented through Mobile Device Management (MDM) or Enterprise Mobility Management (EMM) solutions, uses technologies like sandboxing and per-container encryption (e.g., AES-256) to prevent data leakage between the corporate and personal environments. It allows the enterprise to enforce security policies (e.g., remote wipe of only the container) without compromising the user's personal privacy, which is a key requirement for BYOD (Bring Your Own Device) programs.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Install antivirus on all devices
Why it's wrong here
Antivirus may be recommended but is not universally required; many mobile OS have built-in protections.
- ✓
Use containerization for corporate data
Why this is correct
Correct. Containerization separates corporate and personal data, enabling selective controls.
- ✓
Enable remote wipe capability
Why this is correct
Correct. Remote wipe allows erasure of corporate data if the device is lost or stolen.
- ✗
Disable all third-party apps
Why it's wrong here
This is overly restrictive and not a common practice; it hinders usability.
- ✓
Require complex passwords
Why this is correct
Correct. Strong passwords prevent unauthorized access.
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 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.