Question 1mediummultiple choice
Full question →mediummultiple choiceObjective-mapped
A multinational e-commerce company runs its customer-facing web application on Azure virtual machines deployed in two Azure regions: East US and West Europe. The company wants to automatically route user traffic to the nearest regional deployment based on the user's geographic location. Additionally, if one region becomes unavailable, all traffic should automatically be redirected to the remaining healthy region. The company wants a solution that works at the DNS level and does not require terminating HTTPS traffic at the routing layer. Which Azure service should they use?
Answer choices
Why each option matters
Good practice is not just finding the correct option. The wrong answers often show the exact trap the exam wants you to fall into.
A
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Azure Load Balancer
Azure Load Balancer distributes traffic within a single Azure region and does not provide global geographic routing or cross-region failover. It operates at the transport layer (TCP/UDP) and is not suitable for this multi-region requirement.
B
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Azure Application Gateway
Azure Application Gateway is a regional HTTP(S) load balancer that includes features like URL-based routing and a Web Application Firewall (WAF). It does not support global geographic routing or cross-region failover between different regions.
C
Best answer
Azure Traffic Manager
Azure Traffic Manager is a DNS-based traffic routing service that can direct users to the closest or most appropriate regional endpoint based on geographic location, latency, or priority. It automatically detects endpoint health and fails over to healthy endpoints, making it ideal for global load balancing with DNS-level routing and without terminating HTTPS.
D
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Azure Front Door
Azure Front Door is a global HTTP(S) load balancer and Application Delivery Network (ADN) that provides geographic routing, WAF, and SSL offloading. While it can meet the routing and failover requirements, it terminates HTTPS traffic at the edge, which is more than what is needed in this scenario where DNS-level routing is sufficient. Traffic Manager is the simpler, more cost-effective choice for DNS-only routing.
Common exam trap
Common exam trap: NAT rules depend on direction and matching traffic
NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.
Technical deep dive
How to think about this question
NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.
KKey Concepts to Remember
- Static NAT maps one inside address to one outside address.
- PAT allows many inside hosts to share one public address using ports.
- Inside local and inside global describe the private and translated addresses.
- NAT ACLs identify traffic for translation, not always security filtering.
TExam Day Tips
- Identify inside and outside interfaces first.
- Check whether the scenario needs static NAT, dynamic NAT or PAT.
- Do not confuse NAT matching ACLs with normal packet-filtering intent.
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More questions from this exam
Keep practising from the same exam bank, or move into a focused topic page if this question exposed a weak area.
Question 1
A developer is building a serverless application that requires integration with an on-premises SQL Server database for real-time data processing. The on-premises network is connected to Azure via a site-to-site VPN. Which Azure service would allow the function to securely access the on-premises database without exposing it to the public internet?
Question 2
A solutions architect is designing a storage solution for a large media company. The company needs to store video files that are accessed infrequently but must be retained for several years for compliance. Which two Azure storage options meet these requirements? (Select two.)
Question 3
A company deploys a multi-tier application using Azure virtual machines. The web tier VMs must be evenly distributed across two distinct data centers within an Azure region to avoid a single point of failure from an infrastructure outage. Which Azure construct should they use to meet this requirement?
Question 4
A company wants to enforce a set of security policies across all their Azure subscriptions. They have created several individual policy definitions. Which Azure construct should they use to group these policies together and assign them as a single package?
Question 5
A company deploys a line-of-business application on an Azure virtual machine. The IT team wants to ensure the application remains secure. According to the shared responsibility model, which of the following security tasks is the sole responsibility of the customer (the company)?
Question 6
A company develops a web API that runs on Azure App Service. The development team wants to deploy a new version of the API to a staging environment, run integration tests against it, and then gradually shift production traffic to the new version. If any issues are detected, they want to immediately roll back to the previous version without redeploying. Which Azure App Service feature should the team use to meet these requirements?
FAQ
Questions learners often ask
What does this AZ-900 question test?
Static NAT maps one inside address to one outside address.
What is the correct answer to this question?
The correct answer is: Azure Traffic Manager — Azure Traffic Manager is a DNS-based traffic load balancer that enables you to distribute traffic optimally to services across global Azure regions, while providing high availability and responsiveness. It can route users based on geographic location and automatically fail over if a region becomes unhealthy. Azure Load Balancer and Azure Application Gateway operate within a single region and are not suitable for global geographic routing. Azure Front Door also provides global routing, but it operates as an HTTP(S) reverse proxy, terminating traffic at the edge, which is not required in this scenario and adds unnecessary overhead for a simple DNS-level routing need.
What should I do if I get this AZ-900 question wrong?
Then try more questions from the same exam bank and focus on understanding why the wrong options are tempting.
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