CV0-004 Cloud Architecture and Design Practice Question
Which cloud service model provides the customer with the most control over the operating system and software stack?
⚠ Common exam trap
CV0-004 often tests the understanding of the shared responsibility model and which model offers the most control. The trap is to confuse PaaS with IaaS, thinking PaaS gives more control because it includes a platform, but actually IaaS gives more control over the OS.
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
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IaaS
IaaS (Infrastructure as a Service) provides the customer with the highest level of control over the operating system and software stack among the cloud service models. In IaaS, the provider manages the physical infrastructure, but the customer is responsible for the OS, middleware, runtime, and applications. This allows for maximum customization and control.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
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FaaS
Why it's wrong here
FaaS abstracts the runtime entirely, so the provider manages the operating system and language stack; the customer supplies only function code. FaaS suits event-driven, short-lived workloads. The stem's requirement for maximum OS and software control points to IaaS.
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SaaS
Why it's wrong here
SaaS delivers a finished application, with the provider managing the operating system, runtime and application; the customer controls only configuration and data. SaaS suits standardised workloads such as email. The stem's requirement for maximum OS and software stack control points to IaaS.
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PaaS
Why it's wrong here
PaaS manages the operating system and runtime, leaving the customer to deploy only application code and data. PaaS suits developers avoiding OS patching. The stem's requirement for maximum control over the operating system and software stack points to IaaS.
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IaaS
Why this is correct
IaaS delivers virtualised compute, storage and networking while leaving the guest operating system, middleware and applications to the customer. This satisfies the requirement for maximum control, since the customer patches, hardens and configures the OS and software stack themselves.
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Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed September 2026 · checked against the official CompTIA exam blueprint
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.