What command allows an administrator to save the current configuration on a switch?

The command that allows an administrator to save the current configuration on a switch is indeed the one that copies the running configuration to the startup configuration, ensuring that any changes made will persist even after a reboot. The running configuration is stored in the device's memory and reflects the current state of the switch, including all recent configuration changes. When this configuration is saved to the startup configuration, it becomes the configuration that will be loaded the next time the switch is powered on or restarted.

Utilizing this command is crucial in network management, as it helps prevent loss of configuration during unexpected reboots or power failures. By explicitly saving the running configuration to the startup configuration, administrators ensure that all their configurations are retained, thereby maintaining network stability and availability.

Other options might not achieve the same goal. For instance, writing to memory may refer to different implementations across various systems, potentially leading to confusion. Commands like resetting configuration or saving current-settings imply a different function, such as resetting to defaults or saving specific settings rather than preserving the entire running state of configuration. Thus, the correct approach to satisfy the need for persistent configuration is accurately encapsulated in the command that copies the running configuration to the startup configuration.