Question 1 : Which command is used to change a file or directory’s permission

chmod
chgrp
chown
change

Question 2 : Why do you have to put sudo in front of the chown command?

To make the command run faster.
To get superuser privileges to change file permissions.
It is part of the chown command. chown would not work without it.
To make the command look nicer.

Question 3 : Which command is used to change the permissions to -rwxrw-rw-?

chmod 766
chmod 777
chmod 664
chmod 676

Question 4 : Which command is used to change the permissions to -rwxrw-r--?

chgrp 764
chmod 674
chmod 764
chgrp 674

Question 5 : Which command is used to change the permissions to -rw-r--r--?

chmod 544
chmod 644
chmod 655
chmod 766

Question 6 : Which command is used to change the permissions to -r-xrw---x?

chmod 764
chmod 644
chmod 471
chmod 561

Question 7 : Which command is used to change the user group ownership of a file?

chgrp
chmod
chown
change

Question 8 : Which command is used to change ownership of a file/directory?

chgrp
chmod
chown
change

Question 9 : Why should you not set file permissions to 777?

It does not grant all permissions to users.
Unwanted users can change your files.
You should set your file permissions to 777.
The owner would not be able to modify the file.