Google Professional Cloud Network Engineer exam dumps

Google Professional Cloud Network Engineer practice question 537 of 790

Professional Cloud Network Engineer. Professional level, Google Cloud. Free question with the correct answer and a full explanation.

Google Professional Cloud Network Engineer Question 537

Select 2Google Cloud Platform

You are tasked with migrating an organization's on-premises DNS records to Cloud DNS on Google Cloud. The organization wants to minimize downtime and ensure that DNS queries are continuously served during the migration. What steps should you take to achieve this goal?

  1. A

    Export the existing DNS records from the on-premises DNS server and import them into a Cloud DNS managed zone.

  2. B

    Set up a Cloud DNS managed zone and configure DNS forwarding from the on-premises DNS server to Cloud DNS.

  3. C

    Verify the DNS record accuracy in Cloud DNS by querying them before updating the domain's name server (NS) records.

  4. D

    Immediately update the domain's name server (NS) records to point to Cloud DNS after creating the managed zone.

  5. E

    Enable DNS peering between the on-premises DNS server and Cloud DNS to serve DNS queries from both locations during the migration process.

Show answer and explanation

Correct answers: A, C

Explanation

To minimize downtime during a DNS migration to Cloud DNS, it is critical to first export and import DNS records into Cloud DNS and verify their accuracy. Only after confirming the new configuration works as intended should you update the domain's name server (NS) records. This ensures a seamless transition without disrupting DNS query resolution.

  • A. Correct.

    Correct: Exporting DNS records from the on-premises DNS server and importing them into Cloud DNS is a key step to ensure that the records are available in Cloud DNS before changing name server (NS) settings.

  • B. Incorrect.

    Incorrect: Configuring DNS forwarding from the on-premises DNS server to Cloud DNS is not necessary for a migration. DNS forwarding is typically used for hybrid scenarios rather than migrations.

  • C. Correct.

    Correct: Verifying the accuracy of DNS records in Cloud DNS ensures that the records are configured correctly before switching traffic to the Cloud DNS managed zone.

  • D. Incorrect.

    Incorrect: Immediately updating NS records without verifying the DNS records or setting proper TTL values could lead to service disruptions during the migration.

  • E. Incorrect.

    Incorrect: DNS peering is not necessary for migrating to Cloud DNS. Peering is used for private DNS resolution across networks, not for public DNS migrations.

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