AZ-104 - Configure and Manage Virtual Networking - Section 4.3

Configure name resolution and load balancing using Azure DNS, Azure Load Balancer, and Application Gateway.

Use Azure DNS public zones for internet name resolution and private DNS zones inside virtual networks, then distinguish Azure Load Balancer (Layer 4, TCP/UDP), Application Gateway (Layer 7, HTTP/HTTPS with path-based routing), and Traffic Manager (DNS-based global routing). Choose the service by whether routing happens at the network layer, the application layer, or across regions.

Azure DNSprivate DNS zonesAzure Load BalancerApplication GatewayTraffic Manager

Practice question for this objective

Free sampleConfigure and Manage Virtual Networkingmedium

An architect wants to distribute traffic for a public-facing application across several global Azure regions using a DNS-based load balancing approach. Which Azure DNS service is designed for this scenario?

  • AAzure Private DNS distributes traffic across the global Azure regions
  • BAzure Public DNS distributes traffic across the global Azure regions
  • CAzure DNS Private Resolver distributes traffic across the global Azure regions
  • DAzure Traffic Manager distributes traffic across the global Azure regions Correct
Traffic Manager is the DNS-based global traffic load balancer among the Azure DNS services. Azure Traffic Manager is a DNS-based traffic load balancer that distributes traffic to your public facing applications across the global Azure regions.

Why A is wrong: Azure Private DNS resolves names within virtual networks; it is not a DNS-based global traffic load balancer.

Why B is wrong: Azure Public DNS hosts DNS domains for record management; it does not perform DNS-based traffic load balancing across regions.

Why C is wrong: The Private Resolver enables querying private zones across on-premises and Azure; it does not load balance public application traffic.

Why D is correct: Correct. Azure Traffic Manager is a DNS-based traffic load balancer that distributes traffic to your public facing applications across the global Azure regions.

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