Special Directories and Files M18 Exam

Special Directories and Files M18 Exam

1. The /tmp directory is a temporary directory designed as a location where any user can create a temporary file. True or False?

   • True
   • False

2. The sticky bit permission…

   • …prevents others from overwriting files they don’t own in common directories.
   • …sets the group ownership of any new file created in a directory.
   • …changes the group ownership of existing files in a directory.
   • …prevents others from removing files they don’t own from a common directory.

3. Which of the following commands will set the sticky bit on /shared ?

   • chmod 6777 /shared
   • chmod 1777 /shared
   • chmod 2777 /shared
   • chmod 4777 /shared

4. The setuid permission…

   • …allows a command to be run as the file owner.
   • …reports the output of a script to the owner.
   • …prevents the owner of a file from being changed.
   • …allows files in a directory to be manipulated as by the directory owner.

5. Which of the following commands will set setuid for the /usr/bin/program?

   • None of the above
   • chmod 2755 /usr/bin/program
   • chmod 1755 /usr/bin/program
   • chmod 4755 /usr/bin/program

6. The setgid permission… (choose two)

   • …prevents the group owner of a file from being changed.
   • …can only be set on files.
   • …allows a command to be run as the group owner of the file.
   • …allows files created in a directory to be owned by the group that owns the directory.

7. Which of the following commands will set setgid on /shared ?

   • chmod 2777 /shared
   • chmod 1777 /shared
   • chmod 7777 /shared
   • None of these options are correct
   • chmod 4777 /shared

8. Which of the following long listings represents setgid set for /shared ?

   • drwxrwsrwx. 12 root group 4096 Oct 21 13:12 /shared
   • drwsrwxrwx. 12 root group 4096 Oct 21 13:12 /shared
   • drwSrwxrwx. 12 root group 4096 Oct 21 13:12 /shared
   • drwxrwxrws. 12 root group 4096 Oct 21 13:12 /shared

9. Setting setgid on a directory…

   • …is not allowed by the system.
   • …will allow scripts in the directory to be executed as the group owner of the directory.
   • …does nothing.
   • …will set the group owner of all files created in the directory to the group owner of the directory.

10. Deleting a source file will break an associated hard link. True or False?

    • True
    • False

11. A source and a hard link must be part of the same filesystem. True or False?

    • True
    • False

12. Deleting a source file will break an associated symbolic link. True or False?

    • True
    • False

13. A source file and a symbolic link must be part of the same file system. True or False?

    • True
    • False

14. Which of the following commands would create a hard link, link to file?

    • ln link file
    • ln file link
    • ln -s file link
    • ln -s link file

15. Which of the following commands would create a symbolic link, link to file?

    • ln file link
    • ln link file
    • ln -s file link
    • ln -s link file

16. Which of the following ls commands, when executed, will only show information about the directory itself? (choose two)

    • ls -ld
    • ls -h
    • ld -a
    • ls -d

17. Which of the following directories are designed as locations where any user can create a temporary file? (choose two)

    • /lost+found
    • /sbin
    • /tmp
    • /home
    • /var/tmp