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CCSP Practice Question: A customer requires complete control over…
A customer requires complete control over encryption keys used to protect data at rest in the cloud. Which cloud service model provides the most direct 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
✓
Infrastructure as a Service (IaaS)
IaaS gives customers control over the entire infrastructure stack, including encryption key management. PaaS and SaaS abstract away much of that control, limiting customer-managed key options.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Infrastructure as a Service (IaaS)
Why this is correct
IaaS provides the most control over the operating system, storage, and encryption keys.
- ✗
Anything as a Service (XaaS)
Why it's wrong here
XaaS is a broad term and does not guarantee specific control levels.
- ✗
Platform as a Service (PaaS)
Why it's wrong here
PaaS limits control over the underlying infrastructure and key management.
- ✗
Software as a Service (SaaS)
Why it's wrong here
SaaS offers the least control; encryption keys are typically managed by the provider.
Quick reference
Cloud Service Model Comparison
| Model | You Manage | Provider Manages | Examples |
|---|---|---|---|
| IaaS | OS, runtime, apps, data | Hardware, hypervisor, networking | EC2, Azure VMs, GCP Compute Engine |
| PaaS | Apps and data | OS, runtime, middleware, hardware | Elastic Beanstalk, Azure App Service |
| SaaS | Data and settings only | Everything else | Microsoft 365, Salesforce, Workday |
| FaaS / Serverless | Function code only | Infra, scaling, runtime | Lambda, Azure Functions, Cloud Run |
| CaaS | Containers and apps | Kubernetes, OS, hardware | EKS, AKS, GKE |
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This CCSP 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 CCSP exam.