CV0-004 Security Practice Question
A company is adopting a shared responsibility model for a PaaS cloud deployment. Which THREE responsibilities belong to the customer?
⚠ Common exam trap
The CV0-004 exam often tests the misconception that the customer manages the runtime environment in PaaS, but the trap here is that PaaS abstracts the runtime, so the provider handles it, while the customer's responsibilities are limited to data, application code, and access control.
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
✓
Data classification and encryption
In a PaaS shared responsibility model, the customer is responsible for data classification and encryption of data at rest and in transit. The cloud provider manages the underlying infrastructure, but the customer must classify data according to sensitivity and apply encryption mechanisms, such as using TLS 1.2/1.3 for data in transit and AES-256 for data at rest, as the provider cannot access or classify customer data.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Management of the runtime environment
Why it's wrong here
The provider manages the runtime in PaaS.
- ✗
Physical security of data centers
Why it's wrong here
Physical security is the provider's responsibility.
- ✓
Data classification and encryption
Why this is correct
The customer decides how to classify and encrypt data.
- ✓
Application code security
Why this is correct
The customer develops and secures the application code.
- ✓
User access and identity management
Why this is correct
IAM is a customer responsibility.
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
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This CV0-004 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 CV0-004 exam.