AZ-800 AZ-800 - Microsoft Azure Networking Solutions DNS and Traffic Routing Questions and Answers

Question 1

Which Azure DNS record type is used to map a hostname to an IPv4 address?

Accepted Answer

A record

Answer

An A record maps a hostname to a 32-bit IPv4 address in Azure DNS.

Question 2

You need to host a private DNS zone that resolves names for resources inside a virtual network without exposing it publicly. Which Azure service should you use?

Accepted Answer

Azure Private DNS Zones

Answer

Azure Private DNS Zones provide name resolution for VNet-linked resources without any public internet exposure.

Question 3

A CNAME record in Azure DNS cannot be created at the zone apex. What record type must you use instead for apex domain aliasing?

Accepted Answer

Alias (A) record

Answer

Azure DNS supports alias records at the zone apex to point to Azure resources like Traffic Manager profiles or CDN endpoints.

Question 4

Which TTL (Time-to-Live) behavior applies when you lower the TTL of a DNS record just before a planned failover?

Accepted Answer

Clients cache the record for less time, enabling faster propagation of the new value

Answer

A lower TTL means resolvers discard the cached record sooner, so clients pick up the updated IP more quickly during failover.

Question 5

You want VMs in a virtual network to automatically register their DNS names in a private DNS zone. What must you configure?

Accepted Answer

Enable autoregistration when linking the VNet to the private DNS zone

Answer

When you link a VNet to an Azure Private DNS Zone with autoregistration enabled, VM hostnames are automatically registered.

AZ-800 - Microsoft Azure Networking Solutions Practice Test

AZ-800 - Microsoft Azure Networking Solutions Practice Test

AZ-800 AZ-800 - Microsoft Azure Networking Solutions DNS and Traffic Routing Questions and Answers