You work as a Network Administrator for World Perfect Inc. The company has a Linux-based network. You have configured a Linux Web server on the…

The killall command is the correct tool for this scenario. It is designed to terminate all running processes that match a specific name. Since the server has multiple instances of the httpd process, killall httpd will send a termination signal (SIGTERM by default) to every one of them, effectively stopping the web service. This command is more efficient than finding and killing each process individually by its Process ID (PID).

B. endall httpd: endall is not a standard or valid command in the Linux operating system for process management.

C. kill httpd: The kill command requires a numeric Process ID (PID) as its argument, not a process name like httpd.

D. end httpd: end is not a standard or valid command in the Linux operating system for process management.

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1. Red Hat Enterprise Linux 8 Documentation. "Configuring basic system settings

" Chapter 9. Managing processes

Section 9.4.2. Terminating a process by name. The documentation explicitly states

"To terminate a process by name

use the killall command

" and provides the example: $ killall httpd.

2. The Linux killall(1) man page. The official manual page for the command describes its function as to "kill processes by name." It confirms that the command sends a signal to all processes running any of the specified command names.

3. MIT OpenCourseWare. "The Missing Semester of Your CS Education" (January 2020)

Lecture 2: Shell Tools and Scripting. The lecture notes on process management introduce kill for terminating processes via PID and mention pkill and killall as more convenient alternatives that can operate on process names.