Certified Incident Handler (ECIH) — Question 22

Nicolas, a computer science student, decided to create a guest OS on his laptop for different lab operations. He adopted a virtualization approach in which the guest OS will not be aware that it is running in a virtualized environment. The virtual machine manager (VMM) will directly interact with the computer hardware, translate commands to binary instructions, and forward them to the host OS.
Which of the following virtualization approaches has Nicolas adopted in the above scenario?

Answer options

• A. Hardware-assisted virtualization
• B. Full virtualization
• C. Hybrid virtualization
• D. OS-assisted virtualization

Correct answer: B

Explanation

Nicolas is using full virtualization because the guest OS operates without knowledge of the virtualization layer, allowing it to run as if it were on physical hardware. Hardware-assisted virtualization is incorrect because it involves specific CPU features that enhance virtualization but do not define the operational awareness of the guest OS. Hybrid virtualization combines aspects of both full and OS-assisted virtualization, which does not apply here. OS-assisted virtualization relies on the guest OS being aware of the virtualization, which contradicts the scenario presented.