Câu 3: 300-445: Designing and Implementing Enterprise Network Assurance

Refer to the exhibit. A customer-facing URL was down due to DNS failure, but no alert was triggered from the Cisco ThousandEyes dashboard. Which action ensures the alert functions?

1. A. Remove the Response Code alert condition from the alert.
2. B. Add a new Alert Condition for DNS Time. — đáp án hiện tại
3. C. Change the alert severity from Info to Major.
4. D. Add a new Alert Condition for Error is present.