Topic: Operating Systems / Virtualization
In which of the virtualization techniques, hypervisor modifies the guest OS?
- A. Full virtualization
- B. Para virtualization
- C. Both (a) and (b)
- D. None of the above
Answer: B. Para virtualization
Explanation: In para-virtualization, the guest operating system is explicitly modified to be aware that it is running in a virtualized environment. This allows the guest OS to communicate directly with the hypervisor (using hypercalls) for better performance, unlike full virtualization where the guest OS remains unmodified.