Question

You deploy a single VNet named vnet-prod with several VMs. The VNet uses the default DNS settings (no custom DNS servers configured, no private DNS zones linked). A VM named web01 needs to resolve the hostname of another VM named db01 in the same VNet by its hostname. You have NOT deployed any Azure Private DNS zone. Which statement correctly describes the name resolution behavior?

Accepted Answer

web01 can resolve db01 by hostname automatically using Azure-provided DNS (168.63.129.16), which registers VM hostnames within the same VNet.

Answer

web01 cannot resolve db01 by hostname; you must deploy and link an Azure Private DNS zone with autoregistration enabled.

Answer

web01 can only resolve db01 if you manually add host records to a custom DNS server configured on the VNet.

Answer

web01 can resolve db01 only by its fully qualified domain name against an Azure DNS public zone, not by short hostname.