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Question 416 - AZ-104 discussion

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You have an Azure subscription that contains two virtual machines as shown in the following table.

You perform a reverse DNS lookup for 10.0.0.4 from VM2.

Which FQDN will be returned?

A.
vm1.core.windows.net
Answers
A.
vm1.core.windows.net
B.
vm1.internal.cloudapp.net
Answers
B.
vm1.internal.cloudapp.net
C.
vm1.westeurope.cloudapp.azure.com
Answers
C.
vm1.westeurope.cloudapp.azure.com
D.
vm1.azure.com
Answers
D.
vm1.azure.com
Suggested answer: B

Explanation:

This is an excerpt from the official documentation in the section "Reverse DNS Considerations" Form :

https://docs.microsoft.com/en-us/azure/virtual-network/virtual-networks-name-resolution-for-vmsand-role-instances#dns-client-configuration [..." - All PTR queries for IP addresses of virtual machines will return FQDNs of form [vmname].internal.cloudapp.net - Forward lookup on FQDNs of form [vmname].internal.cloudapp.net will resolve to IP address assigned to the virtual machine. - If the virtual network is linked to an Azure DNS private zones as a registration virtual network, the reverse DNS queries will return two records. One record will be of the form [vmname].[privatednszonename] and the other will be of the form [vmname].internal.cloudapp.net "...]

https://docs.microsoft.com/en-us/azure/virtual-network/virtual-networks-name-resolution-for-vmsand-role-instances

asked 26/09/2024
gokulakrishna S B
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