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

A record

Answer

CNAME record

Answer

PTR record

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

Hosts public DNS records for custom domains

Answer

Replaces Azure DNS public zones

Answer

Enables DNSSEC for VNets

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

Configure a custom DNS server on the VNet

Answer

Set the VM's DNS suffix manually

Answer

Deploy Azure DNS Private Resolver

Question 4

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

Accepted Answer

1,000

Answer

100

Answer

5,000 — standard limit

Answer

Unlimited

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 Public Zone

Answer

Azure Bastion DNS proxy

Answer

Azure Virtual WAN DNS

Question 6

When configuring a CNAME record in Azure DNS, which limitation applies at the zone apex (root domain)?

Accepted Answer

CNAMEs cannot be used at the zone apex — use an Alias record instead

Answer

CNAMEs are allowed at apex with an additional flag

Answer

CNAMEs at apex require a wildcard certificate

Answer

CNAMEs at apex need a higher DNS TTL