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Exam AWS Certified Solutions Architect - Professional SAP-C02 topic 1 question 143 discussion

Exam question from Amazon's AWS Certified Solutions Architect - Professional SAP-C02
Question #: 143
Topic #: 1
[All AWS Certified Solutions Architect - Professional SAP-C02 Questions]

A weather service provides high-resolution weather maps from a web application hosted on AWS in the eu-west-1 Region. The weather maps are updated frequently and stored in Amazon S3 along with static HTML content. The web application is fronted by Amazon CloudFront.

The company recently expanded to serve users in the us-east-1 Region, and these new users report that viewing their respective weather maps is slow from time to time.

Which combination of steps will resolve the us-east-1 performance issues? (Choose two.)

  • A. Configure the AWS Global Accelerator endpoint for the S3 bucket in eu-west-1. Configure endpoint groups for TCP ports 80 and 443 in us-east-1.
  • B. Create a new S3 bucket in us-east-1. Configure S3 cross-Region replication to synchronize from the S3 bucket in eu-west-1.
  • C. Use Lambda@Edge to modify requests from North America to use the S3 Transfer Acceleration endpoint in us-east-1.
  • D. Use Lambda@Edge to modify requests from North America to use the S3 bucket in us-east-1.
  • E. Configure the AWS Global Accelerator endpoint for us-east-1 as an origin on the CloudFront distribution. Use Lambda@Edge to modify requests from North America to use the new origin.
Show Suggested Answer Hide Answer
Suggested Answer: BD 🗳️
by zhangyu20000 at Jan. 16, 2023, 3:55 p.m.
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sambb
Highly Voted 1 year, 11 months ago
Selected Answer: BD
A: Global Accelerator can't have an s3 bucket as endpoint C: People are complaining about time to retreive maps. Transfert acceleration is used to accelerate PUT requests to an s3 bucket located in a distant region. E: An accelerator as cloudfront origin does not make much sense, because cloudfront is already using the AWS network. Global Accelerator is usually for Layer 4 networking and/or static anycast IPs
upvoted 18 times
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masetromain
Highly Voted 2 years ago
Selected Answer: BD
B is correct because it involves creating a new S3 bucket in the us-east-1 region and configuring cross-Region replication to synchronize from the existing S3 bucket in eu-west-1. This will allow users in us-east-1 to access the weather maps from a closer location, improving performance. D is correct because it involves using Lambda@Edge to modify requests from North America to use the S3 bucket in us-east-1. This will also allow users in us-east-1 to access the weather maps from a closer location, improving performance. A and E are not correct because they do not involve creating a new S3 bucket in us-east-1, which is necessary for improving performance for the users in that region. C is not correct because it involves using the S3 Transfer Acceleration endpoint, which is a different service and not necessary for this scenario.
upvoted 8 times
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ahhatem
Most Recent 1 month, 3 weeks ago
Selected Answer: BD
Although, D is not really correct. You should be using "s3 multi-region access point". It is designed specifically for this scenario.
upvoted 1 times
altonh
3 weeks ago
The correct answer implies a CloudFront with multiple origins, i.e. pointing to two (2) S3 buckets and using Lambda@Edge to decide which origin to go to.
upvoted 1 times
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pangchn
10 months, 1 week ago
Selected Answer: BD
BD C using S3 Transfer Acceleration is good but this answer option itself is wrong due to the statement that pointing to a regional endpoint, where it doesn't exist. Once enable, it is just a global endpoint URL https://docs.aws.amazon.com/AmazonS3/latest/userguide/transfer-acceleration-examples.html
upvoted 1 times
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jpa8300
1 year, 1 month ago
Selected Answer: AC
If you want to improve latency , you always look for Global Accelerator fro the readings and Transfer accelerator for the updates. Yes, it is possible to configure AWS Global Accelerator to distribute traffic from an S3 bucket in one AWS Region (eu-west-1) to endpoint groups in another AWS Region (us-east-1) for TCP ports 80 and 443. This configuration can be useful for improving the performance and availability of your S3 bucket for users in both regions. This way you sabe money in the storage, you don't need to duplicate the storage. And for persons that chose option D, if you update the bucket there, those objects will not be replicated to the other region since replication works only in one way.
upvoted 1 times
helloworldabc
5 months ago
just BD
upvoted 1 times
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career360guru
1 year, 1 month ago
Selected Answer: BD
Option B & D
upvoted 1 times
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bjexamprep
1 year, 1 month ago
Selected Answer: BD
This is not a good question design. Does that mean the application use CloudFront in EU and does not use CloudFront in the US? How weird it is!!!
upvoted 3 times
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Jrhp
1 year, 2 months ago
Selected Answer: BD
Exactly case from this blog post https://aws.amazon.com/blogs/networking-and-content-delivery/dynamically-route-viewer-requests-to-any-origin-using-lambdaedge/
upvoted 4 times
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rtguru
1 year, 6 months ago
BD, I was initially looking at BE, I think global accelerator is used more for write requests.
upvoted 2 times
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NikkyDicky
1 year, 7 months ago
Selected Answer: BD
BD makes more ense
upvoted 2 times
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SmileyCloud
1 year, 7 months ago
Selected Answer: BD
https://godof.cloud/dynamic-origin-s3-spa/ Use case
upvoted 1 times
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Eshu2009
1 year, 10 months ago
BE- global accelerators improve performance by providing edge location for onboarding traffic.
upvoted 3 times
Eshu2009
1 year, 10 months ago
Q: Can I use AWS Global Accelerator for object storage with Amazon S3? A: You can use Amazon S3 Multi-Region Access Points to get the benefits of Global Accelerator for object storage. S3 Multi-Region Access Points use Global Accelerator transparently to provide a single global endpoint to access a data set that spans multiple S3 buckets in different AWS Regions. This allows you to build multi-region applications with the same simple architecture used in a single region, and then to run those applications anywhere in the world. Application requests made to an S3 Multi-Region Access Point’s global endpoint automatically route over the AWS global network to the S3 bucket with the lowest network latency. This allows applications to automatically avoid congested network segments on the public internet, improving application performance and reliability.
upvoted 2 times
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mfsec
1 year, 10 months ago
Selected Answer: BD
Ill go with BD
upvoted 1 times
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kiran15789
1 year, 11 months ago
Selected Answer: BD
Since only one additional region we dont need global accelerators
upvoted 4 times
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bititan
1 year, 11 months ago
Selected Answer: BC
S3 transfer acceleration is more efficient
upvoted 1 times
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zozza2023
2 years ago
Selected Answer: BD
A and E are not correct as there isn't a need to use aws global accel
upvoted 2 times
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zhangyu20000
2 years ago
BD is correct
upvoted 1 times
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