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Exam 305-300 Topic 1 Question 30 Discussion

Actual exam question for Lpi's 305-300 exam
Question #: 30
Topic #: 1
Virtualization of which hardware component is facilitated by CPUs supporting nested page table extensions, such as Intel Extended Page Table (EPT) or AMD Rapid Virtualization Indexing (RVI)?

Suggested Answer: A Vote an answer

Explanation
Nested page table extensions, such as Intel Extended Page Table (EPT) or AMD Rapid Virtualization Indexing (RVI), are hardware features that facilitate the virtualization of memory. They allow the CPU to perform the translation of guest virtual addresses to host physical addresses in a single step, without the need for software-managed shadow page tables. This reduces the overhead and complexity of memory management for virtual machines, and improves their performance and isolation. Nested page table extensions do not directly affect the virtualization of other hardware components, such as network interfaces, host bus adapters, hard disks, or IO cache.
References:
* Second Level Address Translation - Wikipedia
* c - What is use of extended page table? - Stack Overflow
* Hypervisor From Scratch - Part 4: Address Translation Using Extended ...

by Roxanne at May 31, 2025, 01:56 AM

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