Linux Essentials Chapter 16 Exam Answer 2016

1. The /tmp directory is a temporary directory and will not exist on a system at all times.. True or False?

• True
• False

2. The /var directory has files that change over time.. True or False?

• True
• False

3. The “sticky bit” permission…

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

4. Which of the following commands will set the “sticky bit” on /shared ?

• chmod 4777 /shared
• chmod 1777 /shared
• chmod 2777 /shared
• chmod 7777 /shared

5. The “setuid” permission…

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

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

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

7. The setgid permission…. (choose two)

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

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

• None of the above
• chmod 4777 /shared
• chmod 1777 /shared
• chmod 2777 /shared

9. Setting setgid on a directory…

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

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

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

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