In which process would you use the command 'config t'?

The command 'config t', short for 'configure terminal', is used to access global configuration mode on Cisco devices. This is an essential step for network administrators as it allows them to make configuration changes to the router or switch. Once in this mode, you can modify settings such as interface configurations, routing protocols, passwords, and other critical operational parameters of the device. Being in global configuration mode indicates that the user is in a higher privilege level where various configurations can be implemented.

The context of the other options highlights tasks that do not involve entering configuration mode. Starting the router refers to the boot process, while displaying interface statistics relates to examining current operational data rather than making changes. Stopping a configuration does not apply here, as 'config t' is specifically for entering configuration mode, not halting it. Thus, the use of 'config t' is exclusively tied to entering configuration mode, making that the correct interpretation in this context.