An administrator wants to use a Linux server's GUI remotely but is limited by security to using TCP port 22. Which of the following is the BEST choice for installation on the Linux server to enable this functionality?

A Linux user needs to connect to a remote email server named mail.foo.com through the SMTP port.
Which of the following commands will accomplish this task?

A Linux storage administrator wants to create a logical volume group. Which of the following commands is required to start the process?

Ann, a junior systems administrator, is required to add a line to the /etc/yum.conf file. However, she receives the following error message when she tries to add the line:

Ann performs some diagnostics to attempt to find the root cause:

Which of the following commands should Ann execute to write content to /etc/yum?

Which of the following configuration management tools is considered agentless?