Can any give an example of this?
Yesterday, when you asked for resources to learrn about SQL Server, one of the suggestions I gave (the first, to be precise) is to make sure you have an instance of SQL Server that you can use to play around with. Now is the time to use that instance.
It is really very easy to create this example yourself. Just create a table, put in a few rows of data, then start a transaction, truncate the table, rollback the transaction and then check the contents of the table.
That example is so basic, that just typing and posting the code would probably have taken me less time than it took me to write this message. But I hope this message has the higher educational value.