Which of the following is the template for the grub.cfg file?

Which run levels should never be declared as the default run level when using SysV init?
(Choose TWO correct answers.)

A systems administrator received a request to enable secure web services and SSH at the firewall level. Which of the following should the administrator use to accomplish this task?
(Choose two.)

A Linux administrator attempts to install the package newprogram.x86_64.rpm using a package manager. The administrator receives a warning indicating the command that was run was using a deprecated package manager. Which of the following commands should the administrator use to avoid the warning and install the newprogram.x86_64.rpm program?

A junior administrator is trying to set up a passwordless SSH connection to one of the servers.
The administrator follows the instructions and puts the key in the authorized_key file at the server, but the administrator is still asked to provide a password during the connection.
Given the following output:

Which of the following commands would resolve the issue and allow an SSH connection to be established without a password?