Linux-Mid-Exam-Batch-8

What command changes file permissions?

• chmod

• chown

• chgrp

• umask

What does the permission rwxr-xr-- indicate?

• Owner: Read, write, execute; Group: Read, execute; Others: Read

• Owner: Read, write; Group: Execute; Others: None

• Owner: Read, execute; Group: Write; Others: Execute

• None of the above

How do you recursively change ownership of a directory?

• chmod -R

• chown -R

• chgrp -R

• umask -R

What does the numeric permission 755 mean?

• Owner: Read, write, execute; Group: Read, execute; Others: Execute

• Owner: Read, write; Group: Read; Others: Execute

• Owner: Read, write, execute; Group: Read, execute; Others: Read, execute

• None of the above

How do you remove all permissions for others on a file?

• chmod o-rwx

• chmod o+

• chmod 777

• chmod u-rwx

What is the default umask value for most Linux distributions?

• 022

• 002

• 777

• 755

What permission will a file have if the umask is 022?

• 755

• 644

• 777

• 666

How do you temporarily change the umask value?

• umask

• chmod

• export umask

• None of the above

How can you lock a user account?

• passwd -d

• usermod -L

• userdel -L

• 
  lockuser

Which directory contains the system's essential binaries and commands required for booting and system repair in single-user mode?

• /etc

• /usr/bin

• /bin

• /var