Final answer:
The show version command on a router is used to verify the value of the software configuration register. This command helps determine the router's boot sequence options.
Step-by-step explanation:
The command that is issued on a router to verify the value of the software configuration register is the show version command. To perform this task, you would enter the router's command-line interface (CLI) and at the prompt, type show version then press Enter. The relevant information will be displayed among other system details. The configuration register setting is crucial because it determines how the router boots up, including whether it loads the operating system from flash memory, loads a backup from TFTP server, or goes into ROMMON mode.