Question 1mediummultiple choice
Full question →mediummultiple choiceObjective-mapped
A company operates a global e-commerce API that serves customers worldwide. The development team needs a solution that provides the following capabilities: global load balancing across deployed instances in multiple Azure regions, web application firewall (WAF) protection against common exploits like SQL injection and cross-site scripting, TLS termination at the edge to reduce backend processing, and caching of static API responses to improve response times for repeated requests. The team wants a single Azure service that integrates all these features natively. 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
Best answer
Azure Front Door
Azure Front Door is a global application delivery network that provides layer 7 load balancing, WAF, SSL/TLS termination, and caching. It is designed for global applications and meets all the specified requirements natively.
B
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Azure Traffic Manager
Azure Traffic Manager is a DNS-based traffic load balancer that routes traffic based on performance or geography, but it does not include a web application firewall, TLS termination, or caching capabilities. It operates at the DNS layer only.
C
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Azure Application Gateway
Azure Application Gateway is a regional load balancer that does include WAF and caching, but it cannot provide global load balancing across multiple Azure regions. It is limited to a single region, so it cannot meet the global routing requirement.
D
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Azure Content Delivery Network (CDN)
Azure CDN provides caching and some edge security features, but it does not offer built-in global load balancing or a native web application firewall. It is primarily a content caching and acceleration service, not a full-featured global load balancer with WAF.
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 Front Door — Azure Front Door is a global, scalable entry point that uses the Microsoft global edge network to route traffic to the closest healthy backend. It natively integrates web application firewall (WAF) policies to protect against common web vulnerabilities, supports TLS termination at the edge, and provides caching capabilities for static content and API responses. This makes it the correct choice for the described scenario. Azure Traffic Manager only provides DNS-based global load balancing without WAF, TLS termination, or caching. Azure Application Gateway is a regional load balancer with WAF and caching, but it does not operate globally. Azure Content Delivery Network (CDN) offers caching and some security features, but it lacks global load balancing and native WAF integration at the application layer.
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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