An administrator needs to make some changes in the IaC declaration templates. Which of the following commands would maintain version control?

A systems administrator received a notification that a system is performing slowly. When running the top command, the systems administrator can see the following values:

Which of the following commands will the administrator most likely run NEXT?

A Linux administrator has set up a new DNS forwarder and is configuring all internal servers to use the new forwarder to look up external DNS requests. The administrator needs to modify the firewall on the server for the DNS forwarder to allow the internal servers to communicate to it and make the changes persistent between server reboots. Which of the following commands should be run on the DNS forwarder server to accomplish this task?

A systems engineer is adding a new 1GB XFS filesystem that should be temporarily mounted under /ops/app. Which of the following is the correct list of commands to achieve this goal?

A Linux system fails to start and delivers the following error message:

Which of the following commands can be used to address this issue?