A systems administrator wants to deploy several applications to the same server quickly. Each application should be abstracted from the host with its own dependencies and libraries and utilize a minimal footprint.
Which of the following would be BEST in this scenario?

A systems administrator is attempting to access a server by SSH. The Linux administrator ensures that the SSH keys on the remote server were unable to connect. The following error message is being displayed:

Which of the following needs to be changed on order for the administrator to access the server via SSH?

A user does not want Bluetooth to start up every tme the system starts. Which of the following commands should the user execute to accomplish this task?

A Linux administrator needs to schedule a backup job to run every Friday at 2 15 a.m. Which of the following lines should the administrator add to the crontab file?

A Linux administrator is testing a configuration script and wants to change the hostname of a workstation temporarily, but it must return to its assigned workstation name after reboot. Which of the following is the BEST command for the administrator to use?