Chapter 17 Exam

Question 1

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

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

Answer 1

chmod o=rx file

Question 2

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

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

Answer 2

chmod 775 file

Question 3

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

True
False

Answer 3

False

Question 4

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

letter
primary
symbolic
octal

Answer 4

symbolic

octal

Question 5

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

True
False

Answer 5

True

Question 6

The user sysadmin will be able to read a file because they own it.
True or False?

True
False

Answer 6

False

Question 7

Octal notation uses the following values for the permissions granted:

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

Answer 7

r = 4, w = 2, x = 1

Question 8

Octal notation uses the following values for the permissions granted:

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

Answer 8

r = 4, w = 2, x = 1

Question 9

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

750
775
666
777

Answer 9

777

Question 10

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

True
False

Answer 10

False

Question 11

The “execute” permission on a directory allows you to:
(choose three)
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
Change to that directory or use it as part of a path

Answer 11

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

Question 12

The “execute” permission on a file allows you to:
Move the file to a new directory
Delete the file
Run the file as a script
This permission isn’t meaningful for text files.

Answer 12

Run the file as a script

Question 13

The chgrp command can be used on a file by:

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

Answer 13

The file owner and root

Question 14

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

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

Answer 14

Only root

Question 15

The chmod command can be used on a file by:

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

Answer 15

The file owner and root

Question 16

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

True
False

Answer 16

False

Question 17

Which of the following chown commands will change the myFile user ownership to the user sam and the group ownership to administrators?
(choose two)

chown sam administrators myFile
chown sam.administrators myFile
chown sam:administrators myFile
chown sam+administrators myFile

Answer 17

chown sam.administrators myFile

chown sam:administrators myFile

Question 18

The chown command permits changing group ownership done by root only.
True or False?

True
False

Answer 18

False

Question 19

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

True
False

Answer 19

False

Question 20

Which of the following commands will list hidden files as well as their ownership?

ls -la
ls -l
ls -a
ls -z

Answer 20

ls -la