Which of the following is true of a directory with no read permissions for a user: The user can not see what is in the directory, but can still access its files and subdirectories (given that the user has permissions for those specific files), so long as they know the proper path name. The user cannot access any files or subdirectories of the directory, regardless of file permissions. All access is denied. File permissions only exist on ordinary files. It is not possible for directories to have file permissions. The user can still use commands such as Is to see the contents of the directory, but the files and subdirectories are not editable. Question 6 The 1-list is: A single dimensional array of i-nodes that the operating system searches through for commands and files. A multi-dimensional array matrix of all users and their associated groups A list of all users on the linux environment A list of all input/output devices connected to the system