What does a router do when configured with the default DNS lookup settings, and a URL is entered on the CLI?

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What does a router do when configured with the default DNS lookup settings, and a URL is entered on the CLI?
A . initiates a ping request to the URL
B . prompts the user to specify the desired IP address
C . continuously attempts to resolve the URL until the command is cancelled
D . sends a broadcast message in an attempt to resolve the URL

Answer: D