A company uses 'Containerization' (e.g., Docker) for its applications. From an auditor's perspective, what is a key difference between a Container and a Virtual Machine (VM)?

Answer options:

Containers are slower than VMs.

Containers share the host Operating System kernel, whereas VMs have their own full OS.

Containers cannot be encrypted.

Containers are only for Linux.

How to approach this question

VM = Hardware virtualization (Heavy). Container = OS virtualization (Light).

Full Answer

B.Containers share the host Operating System kernel, whereas VMs have their own full OS.✓ Correct

Containers are lightweight because they share the host system's kernel, unlike VMs which require a full guest operating system for each instance. This introduces different security isolation risks.

Common mistakes

Thinking containers are just small VMs.

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