Having full root-level access means that you'll be able to access and update each file on a selected server, which includes all system files, and to change system settings or set up server-side software that may be necessary for specific scripts and even offline apps to function appropriately. A server is accessed at the root level via a root user, which has full privileges to do all the abovementioned things. Your root user can also generate various other users. For security reasons, you are advised to have one more account for daily tasks and to use the root account only if you actually need to do a specific task on the server. The root-level access function provides you with full control over your server from any location, provided that you know the user credentials.