Having full root-level access signifies that you will be able to access and customize every file on a specific server, in addition to 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 in order to work appropriately. A server is accessed at the root level with a root user, which has full privileges to do all the aforementioned tasks. Your root user may also make various other users. For security reasons, you are advised to have another account for everyday tasks and to use the root account only if you actually need to perform a task on the hosting server. The root-level access attribute gives you full control of your server from any location, provided that you have the user credentials.