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Exam AWS-SysOps topic 1 question 907 discussion

Exam question from Amazon's AWS-SysOps
Question #: 907
Topic #: 1
[All AWS-SysOps Questions]

A streaming company is using AWS resources in the us-east-1 Region for its production environment. The web tier of the streaming site runs on Amazon EC2 instances behind an Application Load Balancer (ALB). The instances run in an EC2 Auto Scaling group across multiple Availability Zones. The Auto Scaling group is configured to scale when the CPU utilization of the instances is greater than 75%. The user database is hosted on an Amazon RDS MySQL cluster, and video content is stored within an Amazon S3 bucket. Amazon CloudWatch metrics show that the RDS MySQL Multi-AZ DB instance has around 16 GB of memory free and an average CPU utilization of 70%. It is taking users in Asia several seconds longer to access the streaming website.
Which combination of actions will improve the access load times? (Choose two.)

  • A. Configure RDS MySQL Multi-AZ to reduce RDS CPU and RAM utilization and distribute queries to multiple Availability Zones.
  • B. Modify the EC2 Auto Scaling group so it will scale horizontally when CPU utilization is 50%.
  • C. Provision a second production environment in the Asia Pacific Region and use an ALB to distribute cross-Region access.
  • D. Provision a second production environment in the Asia Pacific Region and use Amazon Route 53 latency-based routing.
  • E. Set up an Amazon CloudFront distribution to handle static content for users accessing it from different geographic locations.
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Suggested Answer: BC 🗳️
by Drey at May 2, 2021, 10:54 a.m.
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binhdt2611
Highly Voted 3 years ago
A. Configure RDS MySQL Multi-AZ to reduce RDS CPU and RAM utilization doesn't help resolve issue B. The issue happened in CPU utilization of RDS , not EC2 instances, then autoscaling wont help in this case. C. eliminated because ALB cannot span cross region D. it is possible, but they should use geolocation routing instead, however latency-based routing can still be accepted in this case. E. obviously CloudFront is best practice => D,E is suitable answers
upvoted 7 times
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e45af42
Most Recent 4 months, 2 weeks ago
Selected Answer: DE
D. Provision a second production environment in the Asia Pacific Region and use Amazon Route 53 latency-based routing. This would reduce the latency for users in Asia as the data would have a shorter distance to travel. Amazon Route 53 latency-based routing allows you to route your traffic based on the lowest latency for your end user. E. Set up an Amazon CloudFront distribution to handle static content for users accessing it from different geographic locations. Amazon CloudFront is a content delivery network (CDN) that delivers data, videos, applications, and APIs to customers globally with low latency and high transfer speeds. CloudFront works seamlessly with services including AWS Shield for DDoS mitigation.
upvoted 1 times
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albert_kuo
1 year, 2 months ago
Selected Answer: AD
By enabling Multi-AZ deployment for the RDS MySQL instance, you can improve fault tolerance and availability as it synchronously replicates data to a standby instance in another Availability Zone. By setting up a second production environment in the Asia Pacific Region and using Amazon Route 53 latency-based routing, you can direct users in Asia to the geographically closest endpoint, which can significantly reduce the access load times.
upvoted 1 times
albert_kuo
1 year, 1 month ago
Change to DE Option A suggests configuring RDS Multi-AZ to reduce CPU and RAM utilization. While this might be necessary for optimizing RDS performance, it may not directly address the latency issue experienced by users in Asia.
upvoted 1 times
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gulu73
1 year, 8 months ago
Selected Answer: DE
vote D and E
upvoted 1 times
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aidenpearce01
2 years, 7 months ago
when did the ALB support cross-region ??? You can only do it by deploy ASG in each region and use Route53 for direct traffic i go with DE
upvoted 1 times
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awsmov
3 years ago
D and E should be correct. A and C: doesn't improve latency on Asia which is in different region B: won't improve for Asia region either. And also waste money for scaling out only above 50% CPU usage.
upvoted 2 times
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RicardoD
3 years ago
D | E are the answers
upvoted 2 times
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Drey
3 years, 1 month ago
A. I don't think you can distribute the quesries in diff AZ's B. I don't think it will help since the problem is only for Asia's users and not in CPU C. Quite costy for this one but possible. D. Possible like option C but irrelevant due to the latency-based routing, it should be geoproximity routing. E. CloudFront is actually mga #1 option. My Answer C,E
upvoted 1 times
Drey
3 years ago
agreeing with binhdt, D,E
upvoted 2 times
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Rambogan12
3 years, 1 month ago
I think ELB cannot do Cross region, but you can spread the ELB itself across AZs by using cross zone load balancing
upvoted 1 times
wahlbergusa
2 years, 12 months ago
Correct ELB can only work in a region, for anything cross region you need R53.
upvoted 1 times
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KiraTn
2 years, 12 months ago
ALB does not support multi region
upvoted 1 times
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