A company hosts a public-facing e-commerce website on Azure virtual machines deployed in two Azure regions (East US and West Europe). The company wants to automatically route users to the region that provides the lowest network latency based on their geographic location. The solution must use DNS-based traffic routing and does not require terminating HTTP traffic at the load balancer. Which Azure service should the company 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.
Best answer
Azure Traffic Manager
Correct. Azure Traffic Manager is a DNS-based global traffic load balancer that routes end-user traffic to the nearest regional endpoint based on the configured routing method, such as Performance (lowest latency). It does not terminate HTTP traffic and works at the DNS level.
Distractor review
Azure Application Gateway
Incorrect. Azure Application Gateway is a regional layer-7 load balancer that terminates HTTP/HTTPS traffic, performs SSL offloading, and can route based on URL paths. It is not designed for global latency-based routing and requires terminating HTTP traffic, which contradicts the requirement.
Distractor review
Azure Front Door
Incorrect. Azure Front Door is a global layer-7 load balancer and application delivery network that can route based on latency, but it terminates HTTP/HTTPS traffic at the edge. The requirement states that the solution must not require terminating HTTP traffic, making Front Door less suitable than Traffic Manager.
Distractor review
Azure Load Balancer
Incorrect. Azure Load Balancer is a regional layer-4 load balancer that distributes incoming traffic across virtual machines in the same region. It does not provide global routing based on geographic latency or DNS-level traffic management.
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 global traffic load balancer that can route incoming traffic to the nearest regional endpoint based on the lowest network latency, using the Performance traffic-routing method. It operates at the DNS level, meaning it does not inspect or terminate HTTP traffic. This makes it ideal for global load balancing scenarios where the goal is to minimize latency without adding HTTP-layer processing. Azure Application Gateway and Azure Front Door both operate at the HTTP/HTTPS layer and would terminate traffic, which is not required here. Azure Load Balancer is a regional (not global) layer-4 load balancer and does not offer geographic latency-based routing.
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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