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Exam AZ-104 topic 5 question 80 discussion

Actual exam question from Microsoft's AZ-104
Question #: 80
Topic #: 5
[All AZ-104 Questions]

HOTSPOT -
You have an Azure subscription that contains the virtual networks shown in the following table.

You have the virtual machines shown in the following table.

You have the virtual network interfaces shown in the following table.

Server1 is a DNS server that contains the resources shown in the following table.

You have an Azure private DNS zone named contoso.com that has a virtual network link to VNET2 and the records shown in the following table.

For each of the following statements, select Yes if the statement is true. Otherwise, select No.
NOTE: Each correct selection is worth one point.
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Suggested Answer:
by speed2fast at Sept. 28, 2021, 7:38 a.m.

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speed2fast
Highly Voted 3 years, 5 months ago
Solution seems wrong. Should be No/Yes/No (not tested) No: Server2 uses Server1 for DNS. Server1 has no host2.contoso.com record for 131.107.50.50. It would work if VNET1 hat a virtual network link to the private zone contoso.com. Yes: Server2 uses Server1 for DNS. Server1 has a host1.contoso.com record for 131.107.10.15 No: Server3 uses 10.10.0.4 as DNS (inherited from VNET2). 10.10.0.4 (Server1) has no record for host2.contoso.com. The virtual network link for the private zone contoso.com on VNET2 won't be used since the DNS from VNET1 is set on VNET2. VNET1 DNS is not aware of the private zone contoso.com. It would work if VNET1 had a virtual network link to the private zone contoso.com.
upvoted 126 times
bobothewiseman
11 months ago
agree its should be NYN Both Server2 and Server3 rely on Server1 for DNS resolution
upvoted 2 times
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theOldOne
3 years, 5 months ago
I got the same thing
upvoted 3 times
alex_p
3 years, 5 months ago
How Server3 uses 10.10.0.4 for DNS Server!? Could you explain, please? For NIC3 we have DNS settings "Inherit from virtual network". In addition Server3 is in VNET2. VNET2 is linked to the private zone contoso.com which has a record for host2.contoso.com. So Server3 would be able to resove it. I think the 3th is YES! N-Y-Y
upvoted 35 times
theOldOne
3 years, 4 months ago
Alex-p I can see where you are coming from
upvoted 2 times
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nzalex1
3 years, 4 months ago
Vnet2 has DNS 10.10.10.4 configured. Unless forwarder on this DNS configured to Azure (and we don't have this info), the linked private zone will not have an effect
upvoted 5 times
Sharathjogi
3 years, 1 month ago
VNET2 don't have 10.10.10.4 as DNS server. That DNS server is of NIC2, which belong to VNET1. VNET2 is linked to private.contoso.com, which as a record for host2.contoso.com. Hence it should resolve.
upvoted 2 times
Sharathjogi
2 years, 11 months ago
I take my words back, NIC configured DNS takes precedence over VNET configured DNS.
upvoted 4 times
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csm198611
3 years, 4 months ago
Same results as my labs.
upvoted 7 times
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Mozbius_
3 years ago
I am confused... * Server1 is a DNS of Virtual Network 1 * The Azure private DNS Zone is linked to Virtual Network 2 How is it that dns inheritting Server3 which is found in Virtual Network 2 uses Server1 from Virtual Network 1 as its referenced dns? Can somebody clarify?
upvoted 2 times
Mozbius_
3 years ago
Is Vnet2 using Vnet1's DNS because of peering?
upvoted 1 times
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slimshady
Highly Voted 3 years, 5 months ago
I just tested this for myself, results were: server 2 resolve host2.contoso.com - NO - only host1 exists in the server1-hosted DNS zone, so cannot resolve - and setting server2 to use server1 as a DNS server means it does not use any other DNS servers. server 2 resolve host1.contoso.com - YES to the server1 hosted DNS address ie. 131.107.10.15 server3 resolve host2.contoso.com - YES to the Azure hosted DNS address ie. 131.107.50.50. server3 can also resolve host1.contoso.com to the Azure hosted DNS address (of course). hope this helps :)
upvoted 64 times
slimshady
3 years, 5 months ago
actually I just noticed after reading the comments again that i forgot to set the server1 DNS server on VNET2 - when i did this and updated the servers, server3 could no longer resolve host2.contoso.com as it was using the server1 hosted DNS server. so i say the answer is NO-YES-NO
upvoted 57 times
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mdwSysOps
1 year, 12 months ago
This is the right answer!!
upvoted 2 times
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ejml
3 years, 4 months ago
slimshady, in your test, have you peered the vnet's?. Thanks
upvoted 3 times
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go4adil
1 year, 1 month ago
Agree with slimshady!
upvoted 2 times
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AhmedSaeed19872025
Most Recent 1 month, 1 week ago
Testing lab Answer 100 % true is N Y N
upvoted 1 times
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Neftali
3 months, 3 weeks ago
Server2 resolves host2.contoso.com to 131.107.50.50. Server2 is in VNET1, which uses the Azure-provided DNS server by default, as its DNS configuration is inherited from the virtual network. The Azure-provided DNS server does not have knowledge of the private DNS zone contoso.com, which is linked to VNET2. Therefore, Server2 will not be able to resolve host2.contoso.com to 131.107.50.50, as that record is only available in the Azure private DNS zone linked to VNET2. Answer: No Server2 resolves host1.contoso.com to 131.107.10.15. Similar to the previous case, Server2 is in VNET1 and relies on the Azure-provided DNS server. The record for host1.contoso.com exists in the DNS server hosted by Server1, which is also in VNET1. Since Server1 is configured as a DNS server for the contoso.com zone, Server2 can resolve host1.contoso.com to 131.107.10.15. Answer: Yes
upvoted 1 times
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Dankho
4 months, 3 weeks ago
NYY Server2 resolves host2.contoso.com to 131.107.50.50 No: Server2 is in VNET1, and its DNS server inherits from the virtual network. It does not have direct access to the private DNS zone, which is linked to VNET2. Therefore, it cannot resolve this record. Server2 resolves host1.contoso.com to 131.107.10.15 Yes: Server2 can resolve host1.contoso.com since it’s a public DNS zone and accessible through the Azure-provided DNS. Server3 resolves host2.contoso.com to 131.107.50.50 Yes: Server3 is in VNET2, which has a virtual network link to the private DNS zone. Thus, it can resolve host2.contoso.com.
upvoted 1 times
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[Removed]
5 months, 1 week ago
WRONG No Yes No
upvoted 3 times
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tashakori
11 months, 2 weeks ago
No Yes Yes
upvoted 4 times
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jimikasp
1 year ago
Answer is YNY: Private DNS zones linked to a VNet are queried first when using the default DNS settings of a VNet. Azure provided DNS servers are queried next. However, if a custom DNS server is defined in a VNet, then private DNS zones linked to that VNet are not automatically queried, because the custom settings override the name resolution order. https://learn.microsoft.com/en-us/azure/dns/private-dns-privatednszone#private-dns-zone-resolution
upvoted 3 times
jimikasp
1 year ago
Sorry, I mean NYN
upvoted 5 times
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LovelyGroovey
1 year ago
Chat GPT can answer you better than here. Server2 resolves host2.contoso.com to 131.107.50.50. is YES Server2 does not resolve host1.contoso.com to 131.107.10.15. The correct answer is YES. Server2 does resolve host1.contoso.com to 131.107.10.15. Server3 resolves host2.contoso.com to 131.107.50.50. is YES
upvoted 1 times
Josh219
3 months, 2 weeks ago
keep chatting to chat GPT after few minutes it will say NO YES NO :-) thank me later
upvoted 1 times
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rnd3131
1 year, 1 month ago
DNS in Peered VNets Independent DNS Configuration: Each VNet in Azure can be configured with its own DNS servers. When you peer VNets, these configurations remain independent. A VNet does not inherit or override the DNS server settings of the VNet it is peered with. Resolution Across Peered VNets: Resources in peered VNets can resolve DNS names as per their respective VNet’s DNS settings. If a resource in VNet A needs to resolve a name managed by a DNS server in VNet B, it can do so if the DNS server in VNet B is accessible and if the necessary DNS forwarding or conditional forwarding is set up. Custom DNS Scenarios: In scenarios where you have custom DNS servers, you might need to configure DNS forwarding or conditional forwarding to ensure proper name resolution across peered VNets. Azure-Provided DNS: If you are using Azure-provided DNS, the resolution of names for resources in Azure (like VMs) works across peered VNets without additional configuration.
upvoted 2 times
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Jacky_exam
1 year, 2 months ago
what a shit design. just fire the engineer and fix this question.
upvoted 6 times
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FreeSwan
1 year, 5 months ago
Server 2 connects Server 1 DNS. 1. No - No entry for host2 2. Yes - host1 found 131.10710.15 Server 3 used VNET2 3. Yes - host2 found as 131.107.50.50 So resolved
upvoted 3 times
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Elecktrus
1 year, 6 months ago
In the exam today, 18/08/2023. First question was different, it was Server1
upvoted 5 times
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nomanmalik101
1 year, 6 months ago
what the hell? every second question has confusion. Why are we not able to get the exact answers even after paying huge amount?
upvoted 6 times
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quocdunginfo2
1 year, 6 months ago
Server 2 => NIC2 => 10.10.0.4 => host2.contoso.com => No entry => No Server 2 => NIC2 => 10.10.0.4 => host1.contoso.com => 131.107.10.15 => Yes Server 3 => NIC3 => VNET2 => 10.10.0.4 => host2.contoso.com => No entry => No
upvoted 15 times
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Josete1106
1 year, 7 months ago
N Y N is correct!
upvoted 3 times
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Rayza31
1 year, 8 months ago
I do not understand how answers provided in the site can have so many incorrect answers. Exam topics needs to do better.
upvoted 9 times
NurSalman
1 year, 8 months ago
becareful not to select the same wrong answers from ET in the actual microsoft exam. You can get life time banned because they have an alghoritm
upvoted 6 times
Indy429
1 year, 2 months ago
How do you know this?
upvoted 2 times
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