Exam AZ-305 topic 4 question 19 discussion

Actual exam question from Microsoft's AZ-305

Question #: 19
Topic #: 4

Note: This question is part of a series of questions that present the same scenario. Each question in the series contains a unique solution that might meet the stated goals. Some question sets might have more than one correct solution, while others might not have a correct solution.
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You plan to deploy multiple instances of an Azure web app across several Azure regions.
You need to design an access solution for the app. The solution must meet the following replication requirements:
✑ Support rate limiting.
✑ Balance requests between all instances.
✑ Ensure that users can access the app in the event of a regional outage.
Solution: You use Azure Application Gateway to provide access to the app.
Does this meet the goal?

A. Yes
B. No

Show Suggested Answer

Suggested Answer: B 🗳️

by MilePetroza at Dec. 20, 2022, 1:23 p.m.

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NotMeAnyWay

Highly Voted 1 year, 7 months ago

Selected Answer: B

No, this solution does not meet the goal. Azure Application Gateway is a Layer 7 load balancer that provides features like SSL termination, cookie-based session affinity, and URL-based routing. However, it operates within a single region and cannot distribute traffic across multiple regions. To meet the requirements of supporting rate limiting, balancing requests between instances across multiple regions, and ensuring app accessibility during regional outages, you should use Azure Front Door with Web Application Firewall (WAF). Azure Front Door is a global load balancer that can distribute traffic optimally to services across multiple regions, ensuring high availability in the event of a regional outage. By enabling WAF, you can configure custom rate limiting rules to control incoming traffic to your web app.

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