When copying files from the Internet, especially ISO files, it is a best practice to validate the checksum to guarantee that the data was not changed in transit or even at the source. If the match provided by the vendor is the same that you have on your computer, then you are in an excellent place to start deploying software. Let us do a simple example. I will be using my MSDN website to download the Windows Server 2016. We are going to check the checksum of such file and the algorithm being used (sha1) -- and this is a way that you can validate media files.