A new application needs to be deployed on a virtual server. The virtual server hosts a SQL server that is used by several employees.
Which of the following is the BEST approach for implementation of the new application on the virtual server?

A.
Take a snapshot of the virtual server after installing the new application and store the snapshot in a secure location.

B.
Generate a baseline report detailing all installed applications on the virtualized server after installing the new application.

C.
Take a snapshot of the virtual server before installing the new application and store the snapshot in a secure location.

D.
Create an exact copy of the virtual server and store the copy on an external hard drive after installing the new application.

Explanation:
Snapshots are backups of virtual machines that can be used to quickly recover from poor updates, and errors arising from newly installed applications. However,
the snapshot should be taken before the application or update is installed.
Incorrect Answers:
A: Snapshots are backups of virtual machines that can be used to quickly recover from poor updates, and errors arising from newly installed applications. However,
the snapshot should be taken before, not after, the application or update is installed.
B: A baseline report detailing all installed applications on the virtualized server after the new application is installed would not mitigate risk should the new
application cause the system to crash.
D: An exact backup of virtual machine can be used to recover from poor updates, and errors arising from newly installed applications. However, snapshot would
allow for faster recover. Furthermore, the backup should be taken before, not after, the application or update is installed.

Dulaney, Emmett and Chuck Eastton, CompTIA Security+ Study Guide, Sixth Edition, Sybex, Indianapolis, 2014, pp 203
Stewart, James Michael, CompTIA Security+ Review Guide, Sybex, Indianapolis, 2014, pp 208