Turning off 2-Step Verification

My Notebook PC is running on Windows 8.1 Pro, & I am using Norton Internet Security, Version 22.5.2.15

I recently set-up 3 alternative methods of 2-step verification for signing into my Norton Account :

- VIP Access Desktop (default)

- Voice Call (landline)

- SMS Text message (mobile)

Questions:

(1) If I turn OFF the 2-step verification, would I be able to turn it ON again EASILY, based on my original VIP Access Desktop App & Credential ID ?

(2) If I were to do a Factory Reset to Windows 8 Pro, followed by the upgrade/update to Windows 8.1 Pro, would I have to set-up 2-step verification from "scratch", & in particular the VIP Access" Desktop method, bearing in mind that I would presumably lose my original VIP Access Desktop App with it's Credential ID, when I do the Factory Reset to Win 8 Pro ?

Would greatly appreciate any answers to these questions, & any related advice that anyone can give.

Thank you very much.