In operational mode, what task can you NOT perform?

In operational mode, you primarily deal with the monitoring and management of the device rather than making configuration changes. While tasks such as upgrading device software, clearing interface counters, and clearing old files are all actions that can be carried out in operational mode, changing the device hostname is typically a configuration task reserved for configuration mode.

Operational mode is focused on interacting with the running system without altering its configuration. In contrast, changing the hostname directly affects the configuration and requires you to be in configuration mode to make such changes as it alters how the device identifies itself on the network. This distinction is important for maintaining the stability and integrity of the device’s operational settings.