The show system resources command is the correct and standard command used in the ArubaOS-CX command-line interface (CLI) to display a summary of system resource utilization. The output of this command provides essential performance metrics, including the overall CPU utilization (broken down into user, system, and idle percentages) and the total, used, and free memory on the switch. This command gives a quick, high-level overview of the switch's health and current load.

B. The display command syntax is not used in ArubaOS-CX; it is characteristic of other vendor operating systems like HPE Comware.

C. show hardware utilization is not a valid command in the ArubaOS-CX CLI. Hardware status is checked with different show hardware sub-commands.

D. show process status is not a valid ArubaOS-CX command. To view CPU usage per process, the command show system processes-cpu is used.

1. HPE Aruba. (2023). ArubaOS-CX 10.12 Command-Line Interface Guide. Part Number: 5200-8121a.

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"show system resources": The guide explicitly states

"Displays the system resource utilization information such as CPU and memory utilization." This directly confirms that option A is the correct command for the described purpose. The guide's command index also confirms the non-existence of the commands listed in options B

C

and D.