Explanation:
The correct answer is D: vm1.internal.cloudapp.net. In Azure, when you perform a reverse DNS lookup on a virtual machine's IP address within a virtual network, the returned FQDN is of the form [vmname].internal.cloudapp.net. This is validated by performing practical tests and checking documentation that points out that reverse DNS queries for VMs return internal cloudapp.net addresses.
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In an Azure subscription with two virtual machines, performing a reverse DNS lookup for IP 10.0.0.4 from VM2 results in which FQDN?
A
vm1.core.windows.net
B
vm1.azure.com
C
vm1.westeurope.cloudapp.azure.com
D
vm1.internal.cloudapp.net
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