What is a characteristic of para-virtualization?

Question

Options

• APara-virtualization allows the host hardware to be directly accessed.
• BPara-virtualization guest servers are unaware of one another.
• CPara-virtualization lacks support for containers.
• DPara-virtualization allows direct access between the guest OS and the hypervisor.

• A
  5% (2)
• B
  5% (2)
• C
  2% (1)
• D
  89% (39)

Explanation

Para-Virtualization Explained

Para-virtualization is a virtualization technique where the guest operating system is modified to be aware of the hypervisor, enabling it to make direct hypercalls (API calls) to the hypervisor rather than relying on full hardware emulation - this is exactly what option D describes, making it correct.

Why the distractors are wrong:

• Option A is incorrect because para-virtualization does not allow direct hardware access; that describes bare-metal or Type 1 hypervisor pass-through, not para-virtualization
• Option B is incorrect because guest isolation from one another is a feature of all virtualization types, not a specific characteristic of para-virtualization
• Option C is incorrect because container support is unrelated to para-virtualization; containers operate at the OS level, not the hypervisor level

Memory Tip: Think of "para" as meaning "alongside" - in para-virtualization, the guest OS works alongside the hypervisor through direct communication channels (hypercalls), rather than being completely fooled into thinking it owns real hardware. If you remember "para = partnership between guest OS and hypervisor," you'll always land on option D.

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