Cisco Certified Network Associate (CCNA) Practice Exam

What command is likely used to save the configuration after making changes to IPv6 settings?

1. #save running-config

2. #copy run start

3. #write memory

4. #exit

The correct answer is: #copy run start

The command typically used to save the running configuration to the startup configuration in Cisco devices is "copy run start." This command ensures that any changes made to the current running configuration, such as updates to IPv6 settings, are preserved. By saving the configuration, you ensure that those changes are retained even after the device is rebooted. When you use "copy run start," you are explicitly copying the active configuration (running-config) to the configuration that will be loaded at the next startup (startup-config). This is essential for maintaining network stability and ensuring that configurations do not revert to previous settings after a restart. The other commands mentioned may serve different purposes, but they do not specifically save the running configuration in the same manner. "save running-config" is not a recognized Cisco command, while "write memory" is considered an older command that accomplishes the same task as "copy run start." "exit" does not relate to saving configurations at all, as it typically is used to exit a command-line interface session.