Linux Essentials Chapter 15 Exam Answer 2016

1. Which of the following commands set “other” permissions on file to r-x?

  • chmod o=r+x file
  • chmod o=rx file
  • chmod o-r-w file
  • chmod o+rx file

2. Which of the following commands sets “other” permissions on file to r-x?

  • chmod 777 file
  • chmod 776 file
  • chmod 775 file
  • chmod 774 file

3. Only one set (user, group, other) of permission can be changed at once using the symbolic method.. True or False?

  • True
  • False

4. Which of the following are methods for setting permissions using the chmod command?. (choose two)

  • binary
  • symbolic
  • letter
  • octal

5. The chown command can be used to change the owner and group of a file.. True or False?

  • True
  • False

6. The chgrp command can be used to change the owner and group of a file.. True or False?

  • True
  • False

7. The user sysadmin will be able to read the file because they own it.. —-r–r– 1 sysadmin group 38270 Sep 2 18:49 file. True or False?

  • True
  • False

8. The user sysadmin will be able to change the permissions of the file because they own it.. —-r–r– 1 sysadmin group 38270 Sep 2 18:49 file. True or False?

  • True
  • False

9. Octal notation uses the following values for the permissions granted:

  • r = 4, w = 2, x = 1
  • r = 7, w = 5, x = 0
  • r = 3, w = 2, x = 1
  • r = 4, w = 2, x = 0

10. Which of the following permissions would allow all users to add, view, and delete files in a directory?

  • 666
  • 775
  • 750
  • 777

11. A user cannot delete a file if they do not own it.. True or False?

  • True
  • False

12. The “execute” permission on a directory allows you to:. (choose three)

  • Change to that directory or use it as part of a path
  • Along with write permission to successfully delete the directory
  • Along with read permission to successfully perform ls -l
  • Along with write permission to successfully create new files

13. The “execute” permission on a file allows you to:

  • Run the file as a script
  • This permission isn’t meaningful for text files.
  • Delete the file
  • Move the file to a new directory

14. The chgrp command can be used on a file by:

  • Only root
  • A user that belongs to the files current group
  • The file owner and root
  • Only the file owner

15. The chown command can be used to change the user owner on a file by:

  • Only root
  • A user that belongs to the files current group
  • The file owner and root
  • The file owner

16. The chmod command can be used on a file by:

  • The file owner and root
  • Only root
  • A user that belongs to the files current group
  • The file owner

17. Which option for the chown command can be used to change the owner of a directory and all the files and directories below it?

  • -r
  • -R
  • -f
  • -a

18. The chown command will only accept one file at a time as an argument.. True or False?

  • True
  • False

19. The “execute” permission is never set on files by default.. True or False?

  • True
  • False

20. The user owner of a file will always have the same or higher permissions as “other”.. True or False?

  • True
  • False
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