In order to take a snapshot of the router running configuration and archive running configuration of the router to persistent storage, you should secure the boot configuration of the router using the secure boot-config command. Answer: D is incorrect. You can enable the image resilience, if you want to secure the Cisco IOS image. Answer: C is incorrect. By verifying the security of bootset, you can examine whether or not the Cisco IOS Resilient Configuration is enabled and the files in the bootset are secured.

Answer: B is incorrect. By restoring an archived primary bootset, you can restore a primary bootset from a secure archive after an NVRAM has been erased or a disk has been formatted.