Azure DNS and Private DNS Flashcards

Which Private DNS Zone name should you use for automatic private endpoint DNS resolution of Azure Blob Storage?

Answer: privatelink.blob.core.windows.net

Azure Blob Storage private endpoints use the zone 'privatelink.blob.core.windows.net' for DNS resolution to private IPs.

What DNS record type is created in a Private DNS Zone when a Private Endpoint is configured?

Answer: A record mapping the service FQDN to the private IP

A Private Endpoint creates an A record in the private DNS zone mapping the service's FQDN to its assigned private IP address.

In Azure DNS, what is the minimum TTL (Time to Live) value allowed for a DNS record?

Answer: 0

Azure DNS allows a TTL of 0, though values this low are impractical and Microsoft recommends a minimum TTL of 300 seconds.

Which Azure feature allows you to delegate a subdomain to Azure DNS while keeping the parent zone with another registrar?

Answer: NS record delegation

By creating NS records for the subdomain at the parent registrar pointing to Azure DNS name servers, you delegate that subdomain to Azure DNS.

What is the purpose of the Azure DNS Private Resolver outbound endpoint?

Answer: Forwards DNS queries from Azure to on-premises or external DNS servers

The outbound endpoint of Azure DNS Private Resolver allows DNS queries originating in Azure to be conditionally forwarded to on-premises or external DNS servers.

Which DNS record type is used in Azure DNS to provide reverse DNS lookups (IP address to hostname)?

Answer: PTR record

PTR (pointer) records are used for reverse DNS lookups, mapping an IP address back to a hostname.