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Exam Professional Cloud Network Engineer topic 1 question 205 discussion

Actual exam question from Google's Professional Cloud Network Engineer
Question #: 205
Topic #: 1
[All Professional Cloud Network Engineer Questions]

You are configuring the final elements of a migration effort where resources have been moved from on-premises to Google Cloud. While reviewing the deployed architecture, you noticed that DNS resolution is failing when queries are being sent to the on-premises environment. You login to a Compute Engine instance, try to resolve an on-premises hostname, and the query fails. DNS queries are not arriving at the on-premises DNS server. You need to use managed services to reconfigure Cloud DNS to resolve the DNS error. What should you do?

  • A. Ensure that the operating systems of the Compute Engine instances are configured to send DNS queries to the on-premises DNS servers directly.
  • B. Validate that there is network connectivity to the on-premises environment and that the Compute Engine instances can reach other on-premises resources. If errors persist, remove the VPC Network Peerings and recreate the peerings after validating the routes.
  • C. Validate that the Compute Engine instances are using the Metadata Service IP address as their resolver. Configure an outbound forwarding zone for the on-premises domain pointing to the on-premises DNS server. Configure Cloud Router to advertise the Cloud DNS proxy range to the on-premises network.
  • D. Review the existing Cloud DNS zones, and validate that there is a route in the VPC directing traffic destined to the IP address of the DNS servers. Recreate the existing DNS forwarding zones for . to forward all queries to the on-premises DNS servers.
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Suggested Answer: C 🗳️
by n2183712847 at May 1, 2025, 2:04 a.m.

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n2183712847
1 month, 2 weeks ago
Selected Answer: C
C Managed services should be used to use Metadata Services and enable outbound forwarding zones and have Cloud Router advertise the Cloud DNS Proxy. This is the proper implementation to use.
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