What is an advantage of server virtualization from a maintenance perspective?

What is an advantage of server virtualization from a maintenance perspective?
A . Virtual machines can be non-disruptively relocated to more powerful platforms, If required.
B. Hosts can be powered off with no effect to the virtual machines running on the hosts.
C. Virtual machines that are powered on but not being accessed, use no CPU or memory resources.
D. Hosts can be upgraded or replaced non-disruptively to the virtual machines running on the hosts.

View Answer

Answer: D

Explanation:

server virtualization allows hosts to be upgraded or replaced non-disruptively to the virtual machines running on the hosts by using features such as live migration or vMotion. The other options are not advantages of server virtualization from a maintenance perspective.

References: https://phoenixnap.com/kb/what-is-server-virtualization