Are you planning to take the Security+ exam? If so you should have a basic understanding of virtualization.
See if you answer this sample question.
Q. You are preparing to deploy a new application on a virtual server. The virtual server hosts another server application that employees routinely access. Which of the following is the BEST method to use when deploying the new application?
A. Take a snapshot of the VM before deploying the new application.
B. Take a snapshot of the VM after deploying the new application.
C. Apply blacklisting techniques on the server for the new applications.
D. Back up the server after installing the new application.
See if you're correct here.