Which of the following boot methods can a Linux administrator use to boot a Linux server remotely via a network interface card instead of a local disk?

An engineer is working on a production application deployment that requires changing a web application property file called server.property that is managed by the Git version control system. A cloned copy of the remote repository in which the server.property file exists is on the local desktop computer. The engineer makes appropriate changes to the files, saves it as server.property, and executes git commit -m "changed the property file" server.property. Which of the following commands did the engineer fail to perform?

An administrator receives an alarm because the disk of one of the sewers is running out of space. Which of the following commands can be used to see the space that each partition is using?

An administrator needs to download a monitoring agent called node_exporter.0.16.0-Linux.amd64 from the internal web page https://company.local/downloads/. The server does not have graphical interface.
Which of the following commands will accomplish this task?