Cisco Certified Network Associate (CCNA) Practice Exam

What command is used to save the current configuration to startup configuration?

1. #write memory

2. #copy running-config startup-config

3. #save config

4. #backup running-config

The correct answer is: #copy running-config startup-config

The command used to save the current configuration to the startup configuration is indeed "copy running-config startup-config." This command specifically copies the active configuration (the running configuration) stored in RAM to the startup configuration file in NVRAM. The startup configuration is the one loaded by the device upon reboot, ensuring that any changes made to the running configuration are retained even after a restart. Using this command is crucial for network administrators to ensure that configuration changes are preserved. If the device were to lose power or reboot unexpectedly, any unsaved changes in the running configuration would be lost. Running this command helps guarantee the continuity and reliability of network configurations. In contrast to this command, other options do not accurately save the configuration. For instance, "write memory" is an older version of the same command but is not as widely recognized or preferred in current practices. "Save config" and "backup running-config" are not standard commands within Cisco devices for saving the configuration. Therefore, "copy running-config startup-config" is the correct choice for ensuring that current configurations are saved for future use.