Virtualization offers many benefits. Which of the following incorrectly describes virtualization?

A.
Virtualization simplifies operating system patching.

B.
Virtualization can be used to build a secure computing platform.

C.
Virtualization can provide fault and error containment.

D.
Virtual machines offer powerful debugging capabilities.

Explanation:
A: Virtualization does not simplify operating system patching. In fact, it makes it more complex because it adds at least an operating system. Each operating system
commonly varies in version and configurationsincreasing the complexity of patching. The operating systems for the servers themselves run as guests within the host
environment. Not only do you have to patch and maintain the traditional server operating systems, but now you also have to patch and maintain the virtualization
software itself.
B is incorrect because virtualization can be used to build a secure computing platform. Untrusted applications can be run in secure, isolated sandboxes within a
virtual machine. The virtualization software “compartmentalizes” the individual guest operating systems and ensures that the processes for each guest does not interact
with the other guest processes in an unauthorized manner.
C is incorrect because virtual machines can provide fault and error containment by isolating what is run within the specific guest operating systems. Developers and
security researchers can proactively inject faults into software to study its behavior without impacting other virtual machines. For this reason, virtual machines are useful
tools for research and academic experiments.
D is incorrect because virtual machines enable powerful debugging, as well as performance monitoring, by allowing you to put debugging and performance
monitoring tools in the virtual machine monitor. There’s no need to set up complex debugging scenarios and the operating systems can be debugged without impacting
productivity.