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An administrator accidentally blocks all traffic on port 53 outbound on the Internet-facing firewall protecting its public cloud. Which of the following implications does
this have on customers?

A. All customer services utilizing email alerting or responses will fail.

B. All customer services utilizing internal secure web services will fail.

C. All customer services internally resolving DNS queries will fail.

D. All customer services responding to external name resolution requests will fail.

Explanation:

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