Question 1mediummultiple choice
Full question →mediummultiple choiceObjective-mapped
A company deploys web servers across Azure regions East US and West Europe. The application must automatically direct each user to the region that provides the lowest network latency, and if an entire region becomes unavailable, traffic must be seamlessly redirected to the remaining healthy region. 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.
A
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Azure Load Balancer
Azure Load Balancer distributes incoming traffic within a single Azure region. It cannot route traffic across multiple regions or consider latency between a user and different regions.
B
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Azure Application Gateway
Azure Application Gateway is a regional layer-7 load balancer that provides features such as SSL termination, URL-based routing, and web application firewall. It cannot route traffic across multiple regions.
C
Best answer
Azure Traffic Manager
Azure Traffic Manager is a DNS-based traffic load balancer that operates globally. It supports the Performance routing method, which directs users to the region with the lowest latency, and automatically fails over to a healthy region if an endpoint becomes unavailable.
D
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Azure Front Door
Azure Front Door is a global layer-7 load balancer and application delivery network that provides HTTP/HTTPS acceleration, SSL offload, and web application firewall. While it can route traffic globally based on latency, it is a more feature-rich service than needed for simple DNS-based latency routing, and Azure Traffic Manager is the simpler, correct service for this requirement.
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 operates at the global level. It can route incoming DNS requests to endpoints in different Azure regions based on various routing methods, including Performance routing, which directs traffic to the region with the lowest latency for the requesting client. It also provides automatic failover when an endpoint becomes unhealthy. Azure Load Balancer distributes traffic only within a single region. Azure Application Gateway is a regional layer-7 load balancer with features like SSL termination and URL path routing, but it does not route traffic across regions. Azure Front Door is a global application delivery network that provides load balancing and acceleration, but it operates at the HTTP/HTTPS layer and includes additional features like web application firewall and SSL offload; for simple latency-based routing across regions with DNS-level failover, Azure Traffic Manager is the appropriate service.
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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