Last updated on July 3, 2023
Azure DNS Cheat Sheet
- Enables you to host your DNS zone and manage your DNS records.
- DNS zone allows you to configure a private and public DNS zone.
- Alias recordsets:
- A – maps the host to IPv4.
- AAAA – maps the host to IPv6.
- CNAME – create a record to point to another domain.
- A limit of 20 alias record sets per resource.
- Uses Anycast networking to route users to the closest name servers.
- You can monitor your DNS zone metrics using Azure Monitor.
- QueryVolume – query traffic received.
- RecordSetCount – the number of recordsets in your DNS.
- RecordSetCapacityUtilization – percentage of utilization of your recordset capacity.
- Azure Private DNS allows you to use your custom domain name in your private VNet.
- Alias record allows you to point your naked domain or apex to a traffic manager or CDN endpoint.
Private DNS
- Allows you to manage and resolve domain names in a virtual network.
- Configure a split-horizon DNS to create zones with the same name.
- It also supports all types of DNS records types: A, AAAA, CNAME, MX, PTR, SOA, SRV, and TXT.
- A virtual network can be linked to only one private zone. But you can link multiple virtual networks to a single DNS zone.
- Private IP space in the linked virtual network allows reverse DNS.
Azure DNS Security
- To prevent accidental zone deletion, you can apply a ‘CanNotDelete’ lock.
- Create a custom role to ensure it doesn’t have a zone delete permission.
- You can deploy a DNS firewall to mitigate DNS-related security issues.
Azure DNS Pricing
- Billed on the number of hosted DNS zones.
- You are charged based on the number of DNS queries received.
Validate Your Knowledge
Question 1
Question Type: Single choice
You have an Azure subscription that contains an Azure DNS zone named tutorialsdojo.com
.
There is a requirement to delegate a subdomain named portal.tutorialsdojo.com
to another Azure DNS zone.
What solution would satisfy the requirement?
- Navigate to
tutorialsdojo.com
and add a PTR record namedportal
. - Navigate to
tutorialsdojo.com
and add an NS record namedportal
. - Navigate to
tutorialsdojo.com
and add a CNAME record namedportal
. - Navigate to
tutorialsdojo.com
and add a TXT record namedportal
.
For more Azure practice exam questions with detailed explanations, check out the Tutorials Dojo Portal:
Azure DNS Cheat Sheet Resources:
https://azure.microsoft.com/en-us/services/dns/
https://docs.microsoft.com/en-us/azure/dns/dns-overview
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