Exam AZ-700 topic 5 question 15 discussion

Excuse my, perhaps, silly question but why private.relecloud.com and not simply relecloud.com as concerns the naming of the private dns zone? would typing www.private.relecloud.com or www.releceloud.com would resolve the same way or smt???

If the lab exam will not provide VNet information, I will use DNS Zone. Otherwise use Private DNS zone

The steps for the answer looks ok except we need to create a private DNS zone as: relecloud.com not private.relecloud.com. If we name the DNS zone as private.relecloud.com then creating the CNAME for www makes a record as www.private.relecloud.com which is different with the requirement of the question that says www.relecloud.com.

Given answer is correct => 1- Private DNS zone (NO public DNS zone as vNETS will not be able to use it ass NOT linked) if No private DNS than Azure default DNS is used and will not meet the object as you ca NOT edit the zone i.e. you cannot make CNAME record!! 2- Create CNAME Hostname = www.releceloud.com and value = frontdoor1.azurefd.net Further confirmed here https://learn.microsoft.com/en-us/azure/virtual-network/virtual-networks-name-resolution-for-vms-and-role-instances?tabs=redhat Check the table in the link

i think that we have two options: - Create private dns zone for relecloud.com, record www. CNAME to frontdoor and make the link between the zone and the VNET. - On the public dns zone relecloud.com create the register www. CNAME to frontdoor. The Lab requirement is from ANY VNET, not only from the VNET, so if we create a public dns record any VNET will be able re resolve the dns record

For anyone saying you have to use a public DNS - you are wrong. You need to create a virtual network links to the vnets in order for them to resolve the CNAME of www.relecloud.com to frontdoor1.azurefd.net - you cannot create vnet links to public DNS zones, only private DNS

To ensure that requests for www.relecloud.com from any of your Azure virtual networks resolve to frontdoor1.azurefd.net, you can follow these steps: Go to the Azure portal and navigate to the Relecloud DNS zone. Create a new CNAME record by clicking on the "+ Record set" button. In the "Name" field, enter "www". In the "Type" field, select "CNAME". In the "Alias" field, enter "frontdoor1.azurefd.net". Save the record set by clicking the "Save" button. This will create a CNAME record that maps the hostname "www.relecloud.com" to "frontdoor1.azurefd.net". Once this DNS change propagates to your virtual networks, requests to www.relecloud.com will resolve to frontdoor1.azurefd.net. Note that you may need to update any firewall rules or network security groups to allow traffic to flow to frontdoor1.azurefd.net.

You forgot to add the virtual networks links to the subnet that will use that private DNS zone.

Only Azure networks are needed to resolve the address. Therefore -> private DNS zone

It should be a public DNS not private

You Have to use An Azure DNS zone and not a An Azure private DNS zone