AZ-700 Azure DNS and Private DNS

Question 1

Which Azure DNS record type is used to map a domain name to an Azure resource and automatically updates when the resource's IP changes?

Accepted Answer

Alias record

Answer

Azure DNS Alias records are aware of Azure resource lifecycle and automatically reflect IP changes for resources like Public IPs, Traffic Manager, and CDN.

Question 2

What is the purpose of an Azure Private DNS Zone?

Accepted Answer

Provides name resolution for resources within Azure VNets without public DNS exposure

Answer

Azure Private DNS Zones provide DNS name resolution scoped to linked VNets, keeping records private and not resolvable from the internet.

Question 3

How do you enable automatic DNS registration of VM hostnames in an Azure Private DNS Zone?

Accepted Answer

Enable 'auto-registration' when linking the VNet to the Private DNS Zone

Answer

Enabling auto-registration on the VNet link causes VMs in that VNet to automatically register their hostname and IP in the Private DNS Zone.

Question 4

What is the maximum number of VNets you can link to a single Azure Private DNS Zone?

Accepted Answer

1,000

Answer

Each Azure Private DNS Zone supports up to 1,000 virtual network links, with auto-registration enabled on up to 100 of them.

Question 5

Which Azure service resolves Private DNS Zone names from on-premises networks connected via ExpressRoute or VPN?

Accepted Answer

Azure DNS Private Resolver with inbound/outbound endpoints

Answer

Azure DNS Private Resolver provides inbound endpoints that on-premises DNS servers can forward queries to for Private DNS Zone resolution.

AZ-700 - Designing and Implementing Microsoft Azure Networking Solutions Certification Practice Test

AZ-700 - Designing and Implementing Microsoft Azure Networking Solutions Certification Practice Test

AZ-700 Azure DNS and Private DNS