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Exam AZ-305 topic 4 question 18 discussion

Actual exam question from Microsoft's AZ-305
Question #: 18
Topic #: 4
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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 Load Balancer to provide access to the app.
Does this meet the goal?

  • A. Yes
  • B. No
Show Suggested Answer Hide Answer
Suggested Answer: B 🗳️

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GarryK
Highly Voted 2 years, 2 months ago
Selected Answer: B
Explanation is wrong. Azure Application Gateway and Azure Load Balancer load balance within a region (no support for regional outage). See Regional vs Global https://docs.microsoft.com/en-us/azure/architecture/guide/technology-choices/load-balancing-overview
upvoted 6 times
GarryK
2 years, 2 months ago
So they cant be used to support a failover in case a region fails
upvoted 2 times
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SeMo0o0o0o
Most Recent 3 weeks ago
Selected Answer: B
B is correct
upvoted 1 times
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azkumar305
1 year, 7 months ago
Got this on 14-Apr-2023
upvoted 4 times
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NotMeAnyWay
1 year, 7 months ago
Selected Answer: B
Azure Load Balancer is a regional Layer 4 load balancer that can distribute network traffic within a single region. While it can balance requests between instances within that region, it cannot distribute traffic across multiple regions. Additionally, Azure Load Balancer does not have built-in rate limiting functionality. For your requirements, you should consider using 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.
upvoted 3 times
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ServerBrain
1 year, 11 months ago
Selected Answer: B
So there you have it: Azure Application Gateway, Azure Load Balancer and Azure Traffic Manage do not provide rate limiting. Only Azure Web Application Firewall (WAF) rate limit rule for Azure Front Door does !!
upvoted 1 times
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Snownoodles
2 years, 1 month ago
Selected Answer: B
The correct option shouldbe Azure Front Door+WAF
upvoted 3 times
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