Subject

    Computer Science

    Topic

    Computer Hardware

    Which CPU feature isolates guest OSes for hardware virtualization?

    ক)
    Intel VT-x / AMD-V
    খ)
    Hyper-Threading only
    গ)
    Branch prediction
    ঘ)
    Turbo Boost only

    Explanation

    Hardware virtualization adds a new privilege level and nested page tables. It reduces overhead of trapping sensitive operations. Hyper-Threading exposes two logical threads per core but isn’t isolation. VT-d/IOMMU further isolates device DMA for VMs.

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