When I complete my room scan, show my identification and the scan of my computer is completed is that included in the 3.5 hours allocated to write the examination?

No, the preparation you have to do to write the examination, completing the system diagnosis test, providing your identification is outside of the 3.5-hour exam period you have to complete the examination.  The room scan is calculated within the time limit. However, we have added an additional 3 minutes to your exam time to allow for the room scan.