A systems administrator is editing a service file for the web server. In order to continue testing, all web server processes must be shut down. The administrator accomplishes this with the following…

While sending -15 to a parent gives it a chance to kill children, option D is more comprehensive by stating it gracefully kills the process itself and all its related processes, implying a complete, controlled shutdown.

The kill command itself does not automatically seek out child processes; rather, the process receiving the SIGTERM signal is responsible for handling its children or the operating system cleans up orphaned processes.

Sending -15 does not inherently tell the command to kill all processes matching a string; that functionality is provided by commands like killall or pkill, not the signal itself or a simple kill PID.

The -15 signal (SIGTERM) is a request for a process to terminate gracefully. When a well-behaved parent process, like a web server, receives SIGTERM, it attempts to clean up its resources, save its state, and properly terminate its child processes before exiting itself. This ensures a controlled shutdown of the entire application hierarchy, including parent and child processes.