Having full root-level access means that you can access and update any file on a selected server, including all of the system files, and to change system settings or set up server-side software which may be required by certain scripts and even offline applications in order to function effectively. A server is accessed at the root level through a root user, which has full privileges to perform all of the aforementioned things. Your root user may also make other users. For security reasons, you are advised to have one more account for everyday tasks and to use the root account only if you actually need to perform some task on the website hosting server. The root-level access attribute provides you with full control of your server from almost any location, given that you have the user credentials.