What command saves changes to the working directory?

• A. copy running-config startup-config
• B. writememory
• C. copy running-config working
• D. save configuration

Answer: (C)

Saving changes means taking what you’ve just configured in memory (the running configuration) and writing it to a persistent storage so it isn’t lost after a reboot. In this environment, the persistent file is called the working configuration. Copying the running configuration to the working file updates that saved copy, ensuring the new settings survive a restart. This direct write from the active config to the stored file is the standard way to persist changes on this device.

On other platforms, you might see different targets (like startup configuration) or different commands, but the core idea remains the same: transfer the active settings to a nonvolatile place so they endure beyond the current session.