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Question 121

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.

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?

Yes

Correct Answer: A

Configuring Server2 and Server3 to forward DNS requests to 10.0.1.10 will ensure that all DNS servers can resolve names in the contoso.local zone and any delegated zones within it, such as east.contoso.local and west.contoso.local. Since all servers use root hints, they will be able to resolve internet host names as well. Forwarding all DNS requests to Server1 (10.0.1.10), which has access to the contoso.local zone and its delegations, ensures resolution of both internal and external names.

Discussion

rajeevsujatausaOption: A

IT WILL WORK

AnonymousJhb

The best use of root hints is on internal DNS servers at lower levels of the namespace. Root hints should not be used for querying DNS servers outside your organization; DNS forwarders are better equipped for performing this function. All 3 servers use root hints so internal search is sorted. Internet based hosts require forwarding, so I would say Yes = A

AnonymousJhb

rubbish. Root hints are used to find external DNS internet servers when they are not found in the local cache. Root hints are a list of the DNS servers on the Internet that your DNS servers can use to resolve queries for names that it does not know. https://docs.microsoft.com/en-us/troubleshoot/windows-server/networking/root-hints-reappear-after-removed.

7ROMAPE8Option: A

I think, It may be YES

MiMojoOption: B

It will work but the answer is no. The question asks that all DNS servers can resolve all queries. 2 & 3 are not resolving, they are forwarding and 1 is resolving. So NO, it doesn't meet the requirements.

JackBauer

no. the question asks "does this meet the goal". Yes. All internal and Internet DNS queries will resolve correctly.

rknichols01

technically they do resolve the address. The local DNS server queries the external DNS source for the client, then gets that information back and adds it to the local DNS server cache. then sends that information to the client.

critesaOption: B

From the contoso.local DNS zone you cannot resolve names in either East or West, so this is wrong. I built this in a W2019 lab to confirm this.

joehoesofatOption: B

This is a rough question- the Answer is no as written- this statement You configure Server2 and Server3 to forward DNS requests to 10.0.1.10. is missing what is assumed to be conditional forwarders. Server 2 needs a forwarder to west and server 3 needs a conditional forwarder to east. without these- "all internal namespaces will be addressed" You need a forwarders and conditional forwarders to make this work - this would be a full q and q 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: On Server2, you create a conditional forwarder for contoso.local and west.contoso.local. On Server3, you create a conditional forwarder for contoso.local and east.contoso.local. Does this meet the goal?

AliRiOption: A

Topic 4 Question #9 give correct solution

syu31svcOption: A

"All the DNS servers use root hints" "resolve the names of all the internal namespaces" This method works so answer is Yes

Lu5ckOption: A

Yes. All server has root hints aka DNS that know internet. Server1 has delegation to both zones so Server1 knows everything.

johosofatOption: B

Dang it - of course the answer to this question is IT depends- so this question does not tell us if the zone delgation is domain or forest- if forest delegation then yes! if domain delegation then no - if its a domain delegation then my answer farther down would be required to make it true - https://social.technet.microsoft.com/Forums/lync/en-US/4db4c311-7206-400c-8c12-85ad4bd3e166/dns-resolution-between-child-and-parent-domain?forum=winserverDS

BrukOption: A

I think its A https://learn.microsoft.com/en-us/windows-server/identity/ad-ds/plan/reviewing-dns-concepts The DNS server forwards the query to another DNS server, known as a forwarder. Because the forwarder is not authoritative for the name and does not have the answer in its cache, it uses root hints to find the IP address of the DNS root server.

KrayzrOption: A

Yes, By configuring Server2 to forward DNS requests to 10.0.1.10, all DNS servers can resolve names of all internal namespaces and internet hosts. This is because Server1, which has the IP address 10.0.1.10, is located in Toronto and is responsible for the contoso.local zone. This zone contains zone delegations for east.contoso.local and west.contoso.local. Therefore, forwarding DNS requests to Server1 (10.0.1.10) ensures that all DNS servers can resolve names for all these internal namespaces. Additionally, since all DNS servers use root hints, they can also resolve internet host names. So, the answer is Yes.

SIAMIANJIOption: B

Root hints are indeed used by DNS servers to locate the DNS root servers. After a DNS server locates the DNS root server, it can resolve any query for that namespace. However, root hints alone do not address the specific requirement of resolving internal namespaces (such as east.contoso.local and west.contoso.local). To ensure that all the DNS servers can resolve the names of all the internal namespaces and internet hosts, you should consider the following: Conditional Forwarding: Configure conditional forwarding on your DNS servers. Set up conditional forwarders for the internal namespaces (e.g., east.contoso.local and west.contoso.local). Specify the IP addresses of DNS servers authoritative for those internal namespaces. This approach ensures that queries for internal namespaces are forwarded directly to the authoritative DNS servers.

KuikzOption: A

https://learn.microsoft.com/en-us/windows-server/identity/ad-ds/plan/reviewing-dns-concepts

TRN80Option: A

Tested this scenario in virtual environment, it works

empee1977Option: A

yes, this solution meets the goal of ensuring that all the DNS servers can resolve the names of all the internal namespaces and internet hosts. By configuring Server2 and Server3 to forward DNS requests to Server1, which is the primary DNS server for the contoso.local zone, all DNS servers will have access to the required information to resolve names.

kijkenOption: A

It is possible but it is a configuration of someone that does not understand DNS. So I guess the answer is yes

ProfileXOption: A

This may not be the most efficient configuration, but it will meet the vague requirements in the question. Adding conditional forwarders is common and would be a better configuration, but technically the answer is A Yes. https://learn.microsoft.com/en-us/windows-server/identity/ad-ds/plan/reviewing-dns-concepts