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Exam AZ-800 topic 4 question 3 discussion

Actual exam question from Microsoft's AZ-800
Question #: 3
Topic #: 4
[All AZ-800 Questions]

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?

  • A. Yes
  • B. No
Show Suggested Answer Hide Answer
Suggested Answer: A 🗳️
by rajeevsujatausa at May 28, 2022, 4:44 p.m.

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rajeevsujatausa
Highly Voted 3 years, 1 month ago
IT WILL WORK
upvoted 23 times
AnonymousJhb
3 years ago
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
upvoted 5 times
AnonymousJhb
2 years, 11 months ago
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.
upvoted 10 times
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7ROMAPE8
Highly Voted 3 years ago
I think, It may be YES
upvoted 10 times
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e489b39
Most Recent 3 weeks, 3 days ago
Selected Answer: B
you need Conditional Forwarding
upvoted 1 times
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zuzmo483
4 months ago
Selected Answer: A
It will work because Server1 will resolve everything including internal and external names. Root Hints on Server2 and Server3 won't be used, except if Server 1 is unavailable. The question is only about "being able to resolve internet namespaces". It would be different if it said all servers must use their own root hints to resolve external names.
upvoted 1 times
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Ksk08
8 months, 1 week ago
Answer is yes
upvoted 1 times
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Krayzr
11 months, 2 weeks ago
Selected Answer: 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.
upvoted 3 times
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SIAMIANJI
1 year, 2 months ago
Selected Answer: 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.
upvoted 1 times
LionelS
3 months, 1 week ago
While Conditional forwarding on Server 2 and Server3 would definitely work in this scenario, the offered solution would also work: as Server1 can resolve all internal names, it's enough to configure it as Forwarder on Server2 and Server3.
upvoted 1 times
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Kuikz
1 year, 2 months ago
Selected Answer: A
https://learn.microsoft.com/en-us/windows-server/identity/ad-ds/plan/reviewing-dns-concepts
upvoted 1 times
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TRN80
1 year, 5 months ago
Selected Answer: A
Tested this scenario in virtual environment, it works
upvoted 1 times
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AliRi
2 years, 2 months ago
Topic 4 Question #9 give correct solution
upvoted 2 times
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MiMojo
2 years, 2 months ago
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.
upvoted 5 times
JackBauer
1 year, 8 months ago
no. the question asks "does this meet the goal". Yes. All internal and Internet DNS queries will resolve correctly.
upvoted 2 times
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rknichols01
1 year, 5 months ago
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.
upvoted 1 times
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syu31svc
2 years, 3 months ago
Selected Answer: A
"All the DNS servers use root hints" "resolve the names of all the internal namespaces" This method works so answer is Yes
upvoted 3 times
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empee1977
2 years, 4 months ago
Selected Answer: 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.
upvoted 2 times
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critesa
2 years, 6 months ago
Selected Answer: 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.
upvoted 4 times
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Lu5ck
2 years, 6 months ago
Selected Answer: A
Yes. All server has root hints aka DNS that know internet. Server1 has delegation to both zones so Server1 knows everything.
upvoted 3 times
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johosofat
2 years, 7 months ago
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
upvoted 2 times
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kijken
2 years, 8 months ago
It is possible but it is a configuration of someone that does not understand DNS. So I guess the answer is yes
upvoted 1 times
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