212-82 Question #122: Real Exam Question with Answer & Explanation

Question

As a Virtualization Software Engineer/Analyst, you are employed on a Project with Alpha Inc. Company, the OS Virtualization is used for isolation of Physical/Base OS with the Hypervisor OS. What is the security benefit of OS virtualization in terms of isolation?

Options

• AVirtual machines can freely access the resources of other VMs on the same host.
• BVirtual machines are isolated from each other, preventing a security breach in one from impacting
• CA compromised virtual machine can easily infect the physical host and other VMs.
• DOS virtualization offers no security benefits in isolation.

Explanation

A key security benefit of OS virtualization is isolation, where virtual machines are kept separate from each other and the host, preventing a security compromise in one VM from affecting others or the underlying hypervisor.

Common mistakes.

• A. Virtual machines are designed to be isolated, not to freely access each other's resources, as this would negate the security benefits of virtualization.
• C. While "hypervisor escape" attacks exist, a properly configured and patched virtualized environment is designed to prevent a compromised VM from easily infecting the physical host or other VMs, making this statement an oversimplification of a vulnerability, not the general behavior.
• D. OS virtualization provides significant security benefits, particularly concerning isolation and sandboxing, making this statement entirely false.

Concept tested. Virtualization security isolation benefits

Reference. https://learn.microsoft.com/en-us/windows-server/virtualization/hyper-v/best-practices/run-virtual-machines-securely

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