CAS-004 Security Architecture Practice Question
An organization is adopting a cloud-first strategy and wants to ensure proper security responsibilities are understood. Which concept defines the division of security responsibilities between the cloud provider and the customer?
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
✓
Shared responsibility model
The shared responsibility model defines which security tasks are handled by the provider (e.g., physical security) and which by the customer (e.g., data access).
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Zero trust
Why it's wrong here
Zero trust is an architectural model, not a responsibility framework.
- ✓
Shared responsibility model
Why this is correct
Correctly describes the division of security responsibilities in cloud computing.
- ✗
Software-defined perimeter
Why it's wrong here
SDP is a network security concept, not a responsibility model.
- ✗
Defense in depth
Why it's wrong here
Defense in depth is a layering strategy, not a division of responsibilities.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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