When Virtualization-Based Security (VBS) is enabled on a Windows virtual machine, vSphere exposes hardware virtualization extensions to the guest OS. This architecture is compatible with core vSphere availability and resource management features. vSphere High Availability (HA) protects the VM by restarting it on another host after a failure. vSphere Distributed Resource Scheduler (DRS) can balance workloads by migrating the VM using vSphere vMotion, which is also supported. These features operate on the VM as a container and do not conflict with the internal VBS security model.

B. PCI passthrough: This feature is not supported with VBS as both technologies require exclusive control over the IOMMU, creating a conflict.

D. vSphere Fault Tolerance: This feature is unsupported because its lock-step processing mechanism is incompatible with the nested virtualization architecture required by VBS.

F. Hot Add of CPU or memory: Dynamically adding or removing hardware resources like CPU or memory is not supported for VBS-enabled VMs due to the strict hardware configuration VBS requires.

1. VMware vSphere 8.0 Security Documentation

Securing Virtual Machines

"Virtualization-Based Security (VBS)".

Section: "Limitations of Virtualization-Based Security"

Content: This section explicitly lists "vSphere Fault Tolerance

" "PCI passthrough

" and "Hot-add and hot-remove of virtual devices

CPU

and memory" as unsupported features for VBS-enabled virtual machines. This directly supports why options B

D

and F are incorrect.

2. VMware vSphere 8.0 Security Documentation

Securing Virtual Machines

"Virtualization-Based Security (VBS)".

Section: "vSphere vMotion Compatibility for VBS"

Content: This section details the requirements for performing a vMotion migration of a VBS-enabled VM

confirming that the feature is supported. This validates option A. The support for DRS (Option E) is implicit

as DRS relies on vMotion for automated migrations. HA (Option C) is a fundamental cluster feature not listed in the limitations

and its crash-consistent restart mechanism is compatible with VBS.