Which command is used to load the ROM Monitor program during the boot process?

The command that is used to load the ROM Monitor program during the boot process is commonly known as "boot system." This command is crucial as it instructs the router or switch to load the operating system (like IOS) from the specified source, typically from flash memory. If the device cannot find a valid operating system image, it may default to entering ROM Monitor mode (rommon) for recovery purposes.

Understanding the boot process is essential for troubleshooting Cisco devices. If the IOS is not present or corrupted, the device will enter the ROM Monitor mode, which is a basic operating environment that allows minimal operations to be performed, such as loading an operating system from a different source.

The other choices provided do not accurately describe the process of loading the ROM Monitor. "Load rommon" is not a standard command used in Cisco IOS; rather, the device automatically enters ROM Monitor if it cannot load the OS. "Boot exec" is not a recognized command for initiating ROM Monitor either, and "rommon load" does not exist in the context of Cisco commands. Thus, recognizing the appropriate command for loading the ROM Monitor emphasizes the importance of understanding Cisco's boot sequence and command-line interface.