Which command is best used for viewing current system resource usage on a server?

Which command is best used for viewing current system resource usage on a server?

• A. top
• B. df -h
• C. netstat -a
• D. ps -aux

Answer: (A)

The command that is best suited for viewing current system resource usage is "top." This command provides a dynamic, real-time view of the system's processes as well as resource utilization metrics such as CPU and memory usage. It displays an ongoing list of active processes and their resource consumption, including the CPU percentage and memory allocation for each process, allowing administrators to monitor the system's performance effectively. Using "top," administrators can observe how resources are being utilized at any given moment, making it an invaluable tool for troubleshooting performance issues or for general monitoring of system health. The real-time aspect of "top" gives it an edge over other commands that provide more static information. The other options serve different purposes: "df -h" shows disk space usage and how much is available, "netstat -a" lists active network connections and listening ports, and "ps -aux" provides information about currently running processes but does not give a dynamic overview of resource usage over time.

The command that is best suited for viewing current system resource usage is "top." This command provides a dynamic, real-time view of the system's processes as well as resource utilization metrics such as CPU and memory usage. It displays an ongoing list of active processes and their resource consumption, including the CPU percentage and memory allocation for each process, allowing administrators to monitor the system's performance effectively.

Using "top," administrators can observe how resources are being utilized at any given moment, making it an invaluable tool for troubleshooting performance issues or for general monitoring of system health. The real-time aspect of "top" gives it an edge over other commands that provide more static information.

The other options serve different purposes: "df -h" shows disk space usage and how much is available, "netstat -a" lists active network connections and listening ports, and "ps -aux" provides information about currently running processes but does not give a dynamic overview of resource usage over time.