Implementing Cisco SD-WAN Solutions (ENSDWI) — Question 177

Which issue triggers the Cisco Umbrella resolver to forward DNS requests to the intelligent proxy?

Answer options

• A. A domain is locally reachable.
• B. A domain is block-listed.
• C. A domain is nonexistent.
• D. A domain is grey-listed.

Correct answer: D

Explanation

The correct answer is D, as a grey-listed domain indicates that it may be suspicious and requires further inspection, prompting the resolver to forward the request to the intelligent proxy. Options A, B, and C do not trigger this behavior; A indicates accessibility, B means the domain is explicitly blocked, and C signifies that the domain does not exist.