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Exam AZ-103 topic 4 question 27 discussion

Actual exam question from Microsoft's AZ-103
Question #: 27
Topic #: 4
[All AZ-103 Questions]

HOTSPOT -
You have an Azure subscription named Subscription1. Subscription1 contains the resources in the following table.

In Azure, you create a private DNS zone named adatum.com. You set the registration virtual networks to VNet2. The adatum.com zone is configured as shown in the following exhibit.

For each of the following statements, select Yes if the statement is true. Otherwise, select No.
NOTE: Each correct selection is worth one point.
Hot Area:

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Suggested Answer:
Box 1: No -
Azure DNS provides automatic registration of virtual machines from a single virtual network that's linked to a private zone as a registration virtual network. VM5 does not belong to the registration virtual network though.

Box 2: No -
Forward DNS resolution is supported across virtual networks that are linked to the private zone as resolution virtual networks. VM5 does belong to a resolution virtual network.

Box 3: Yes -
VM6 belongs to registration virtual network, and an A (Host) record exists for VM9 in the DNS zone.
By default, registration virtual networks also act as resolution virtual networks, in the sense that DNS resolution against the zone works from any of the virtual machines within the registration virtual network.
Reference:
https://docs.microsoft.com/en-us/azure/dns/private-dns-overview
by Nhan at April 22, 2020, 2:13 a.m.

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Nhan
Highly Voted 5 years ago
The given answer is correct
upvoted 32 times
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SreeniNannuri
Highly Voted 4 years, 9 months ago
came in exam
upvoted 12 times
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skech
Most Recent 3 years, 11 months ago
Correct : NO, YES, YES DNS queries across the virtual networks are resolved. A DNS query from a VM in the Resolution VNet, for a VM in the Registration VNet, will receive a DNS response containing the Private IP of VM.
upvoted 3 times
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skech
3 years, 11 months ago
Name resolution across multiple virtual networks is probably the most common usage for DNS private zones. The following diagram shows a simple version of this scenario where there are only two virtual networks - VNet1 and VNet2. VNet1 is designated as a Registration virtual network and VNET2 is designated as a Resolution virtual network. The intent is for both virtual networks to share a common zone contoso.lab. The Resolution and Registration virtual networks are linked to the zone. DNS records for the Registration VNet VMs are automatically created. You can manually add DNS records for VMs in the Resolution virtual network.
upvoted 2 times
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I
4 years, 2 months ago
Correct, because VM5 is not in registration virtual networks of VNet2.
upvoted 1 times
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Matkes
4 years, 5 months ago
correct. The registration of the virtual networks is set to VNet2, therefore VM's in another network will be not able to resolve VM's in VNet1 and vice versa.
upvoted 2 times
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PT16
4 years, 5 months ago
Why cannot VM5 connect to VM9 using the domain name ?
upvoted 1 times
nNeo
4 years, 4 months ago
It's on different network, the network need to be registered with the zone to be able to resolve DNS.
upvoted 1 times
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simanastasiya
4 years, 5 months ago
in exam az-104 29nov 2020
upvoted 8 times
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