Practice Test 1 | Google Cloud Certified Professional Cloud Network Engineer | Dumps | Mock Test
A company has two versions of application running on separate load balanced managed instance groups. The production version should be served when a request comes from the internet and the development version should be served when the requests come from the development VPC. Both versions should have the same DNS name. You have been asked to design the DNS solution to meet the requirements.
Which of the following is CORRECT?
A. Create a Split-horizon within Cloud DNS to serve different answers based on the source of the request
B. Create a public zone in Cloud DNS and attach the development VPC to serve different answers based on the source of the request
C. It is currently no possible to create two zones with the same name in Cloud DNS
D. Create a private zone in Cloud DNS and attach development VPC. Create a forwarding zone for incoming traffic from the internet
Correct Answer: A
- Option A is correct. Split-horizon DNS lets you serve different answers (different resource record sets) for the same name depending on who is asking. It is a term used to describe an instance when two zones, one to be used by the internal network and the other to be used by the external network (usually the internet), are created for the same domain.
- Option B is incorrect. The public zone is visible to the internet, not the internal organization. Also, VPCs cannot be added to public zones.
- Option C is incorrect. It is possible to both the private and public zones in Cloud DNS to use the same domain name. It is called Split-horizon DNS.
- Option D is incorrect. Private zone is visible only within Google Cloud to the VPCs attached to it. A forwarding zone is one way to implement outbound DNS forwarding from your VPC network. The requirement is for how to direct incoming DNS calls.
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