Having full root-level access means that you will be able to access and update any file on a particular server, including all the 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 work properly. A server is accessed at the root level via a root user, which has full privileges to perform all of the abovementioned tasks. Your root user can also create various other users. For safety reasons, you are advised to have another account for routine tasks and to use the root account only if you actually need to do a particular task on your server. The root-level access function offers you full control over your server from any kind of location, as long as you know the user credentials.