Question
Note: This question is part of a series of questions that present the same scenario. Each question in the series contains a unique solution that might meet the stated goals. Some question sets might have more than one correct solution, while others might not have a correct solution.
After you answer a question in this section, you will NOT be able to return to it. As a result, these questions will not appear in the review screen.
You are planning the deployment of DNS to a new network.
You have three internal DNS servers as shown in the following table.
| Name | Location | IP address | Local DNS zone |
|---|---|---|---|
| Server1 | Montreal | 10.0.1.10 | contoso.local |
| Server2 | Toronto | 10.0.2.10 | east.contoso.local |
| Server3 | Seattle | 10.0.3.10 | west.contoso.local |
The contoso.local zone contains zone delegations for east.contoso.local and west.contoso.local. All the DNS servers use root hints.
You need to ensure that all the DNS servers can resolve the names of all the internal namespaces and internet hosts.
Solution: You configure Server2 and Server3 to forward DNS requests to 10.0.1.10.
Does this meet the goal?
- A. Yes Correct
- B. No
Explanation
Yes. A DNS server first answers from the zones it hosts and from its cache, and sends only the remaining queries to its forwarder. Server2 and Server3 still answer for their own zones and forward everything else to Server1 (10.0.1.10). Server1 hosts contoso.local, which contains delegations for east.contoso.local and west.contoso.local, so it resolves names in contoso.local directly and follows the delegations to Server2 and Server3 for the child zones. For internet names, Server1 uses root hints. As a result, Server2 resolves contoso.local and west.contoso.local through Server1, Server3 resolves contoso.local and east.contoso.local through Server1, and all three servers can resolve internet hosts.
