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Exam AWS Certified Solutions Architect - Associate SAA-C02 topic 1 question 191 discussion

Exam question from Amazon's AWS Certified Solutions Architect - Associate SAA-C02
Question #: 191
Topic #: 1
[All AWS Certified Solutions Architect - Associate SAA-C02 Questions]

A company collects temperature, humidity, and atmospheric pressure data in cities across multiple continents. The average volume of data collected per site each day is 500 GB. Each site has a high-speed internet connection. The company's weather forecasting applications are based in a single Region and analyze the data daily.
What is the FASTEST way to aggregate data from all of these global sites?

  • A. Enable Amazon S3 Transfer Acceleration on the destination bucket. Use multipart uploads to directly upload site data to the destination bucket.
  • B. Upload site data to an Amazon S3 bucket in the closest AWS Region. Use S3 cross-Region replication to copy objects to the destination bucket.
  • C. Schedule AWS Snowball jobs daily to transfer data to the closest AWS Region. Use S3 cross-Region replication to copy objects to the destination bucket.
  • D. Upload the data to an Amazon EC2 instance in the closest Region. Store the data in an Amazon Elastic Block Store (Amazon EBS) volume. Once a day take an EBS snapshot and copy it to the centralized Region. Restore the EBS volume in the centralized Region and run an analysis on the data daily.
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Suggested Answer: A 🗳️
by manoj101 at Aug. 28, 2020, 2:47 a.m.
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KKW
Highly Voted 3 years, 7 months ago
A. Transfer Acceleration fastest.
upvoted 56 times
liams123
9 months, 3 weeks ago
Option B aligns with the requirements for several reasons: Upload Data to Closest Region: Uploading data to an S3 bucket in the closest Region ensures minimal latency and optimal upload speeds from each site due to their high-speed Internet connections. This approach leverages the proximity to reduce upload times. S3 Cross-Region Replication (CRR): After data is uploaded to regional S3 buckets, S3 Cross-Region Replication can asynchronously replicate objects to the destination S3 bucket. This allows for efficient and automatic aggregation of data across global sites into a single bucket. Operational Simplicity: Once configured, S3 CRR handles the replication process automatically. There's no need for manual intervention beyond the initial setup, minimizing operational complexity.
upvoted 1 times
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rubytong
3 years, 6 months ago
A is correct You might want to use Transfer Acceleration on a bucket for various reasons, including the following: You have customers that upload to a centralized bucket from all over the world. You transfer gigabytes to terabytes of data on a regular basis across continents. You are unable to utilize all of your available bandwidth over the Internet when uploading to Amazon S3. https://docs.aws.amazon.com/AmazonS3/latest/dev/transfer-acceleration.html
upvoted 19 times
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rimi
Highly Voted 3 years, 7 months ago
It's B. Each city store on average 500 GB per day of sensor data. That does not mean it has to be transferred in one go. They also collect data on several continents (world wide). Transferring the data first to a closest AWS Region allows you to use AWS cross-region internal network for centralization of the data. This is usually faster than normal internet.
upvoted 18 times
liams123
9 months, 3 weeks ago
Option B aligns with the requirements for several reasons: Upload Data to Closest Region: Uploading data to an S3 bucket in the closest Region ensures minimal latency and optimal upload speeds from each site due to their high-speed Internet connections. This approach leverages the proximity to reduce upload times. S3 Cross-Region Replication (CRR): After data is uploaded to regional S3 buckets, S3 Cross-Region Replication can asynchronously replicate objects to the destination S3 bucket. This allows for efficient and automatic aggregation of data across global sites into a single bucket. Operational Simplicity: Once configured, S3 CRR handles the replication process automatically. There's no need for manual intervention beyond the initial setup, minimizing operational complexity.
upvoted 1 times
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lehoang15tuoi
3 years, 6 months ago
Wrong. Transfer Acceleration (option A) will first get the data into the nearest AWS data center OR nearest Edge Locations. Option B will get the data into the nearest AWS center. Once it reaches the data center or edge location, both methods will use AWS's internal network. So it's clear that option B is slower (because it doesn't use edge location as the first destination). Additionally, it's a bad solution as well - you're inducing additional charges for the unnecessary buckets in each region and additional costs to transfer S3 cross regions
upvoted 28 times
liams123
9 months, 3 weeks ago
wrong. Option B aligns with the requirements for several reasons: Upload Data to Closest Region: Uploading data to an S3 bucket in the closest Region ensures minimal latency and optimal upload speeds from each site due to their high-speed Internet connections. This approach leverages the proximity to reduce upload times. S3 Cross-Region Replication (CRR): After data is uploaded to regional S3 buckets, S3 Cross-Region Replication can asynchronously replicate objects to the destination S3 bucket. This allows for efficient and automatic aggregation of data across global sites into a single bucket. Operational Simplicity: Once configured, S3 CRR handles the replication process automatically. There's no need for manual intervention beyond the initial setup, minimizing operational complexity.
upvoted 1 times
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wakame
3 years, 6 months ago
Strong Agree!
upvoted 2 times
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Shane_theNetworkGuy
2 years, 8 months ago
This is the most coft effective solution? Or is it?
upvoted 1 times
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thamalaka
3 years, 5 months ago
Go and Study again
upvoted 5 times
liams123
9 months, 3 weeks ago
Option B aligns with the requirements for several reasons: Upload Data to Closest Region: Uploading data to an S3 bucket in the closest Region ensures minimal latency and optimal upload speeds from each site due to their high-speed Internet connections. This approach leverages the proximity to reduce upload times. S3 Cross-Region Replication (CRR): After data is uploaded to regional S3 buckets, S3 Cross-Region Replication can asynchronously replicate objects to the destination S3 bucket. This allows for efficient and automatic aggregation of data across global sites into a single bucket. Operational Simplicity: Once configured, S3 CRR handles the replication process automatically. There's no need for manual intervention beyond the initial setup, minimizing operational complexity.
upvoted 1 times
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rafnex
2 years, 8 months ago
mofo straight up bully
upvoted 4 times
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Thinkthrough
3 years, 4 months ago
This didnt really help anybody. If you have studied, tell us why you think his answer is not right.
upvoted 11 times
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liams123
Most Recent 9 months, 3 weeks ago
Option B aligns with the requirements for several reasons: Upload Data to Closest Region: Uploading data to an S3 bucket in the closest Region ensures minimal latency and optimal upload speeds from each site due to their high-speed Internet connections. This approach leverages the proximity to reduce upload times. S3 Cross-Region Replication (CRR): After data is uploaded to regional S3 buckets, S3 Cross-Region Replication can asynchronously replicate objects to the destination S3 bucket. This allows for efficient and automatic aggregation of data across global sites into a single bucket. Operational Simplicity: Once configured, S3 CRR handles the replication process automatically. There's no need for manual intervention beyond the initial setup, minimizing operational complexity.
upvoted 1 times
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LabLab
1 year, 11 months ago
A is correct: Use Transfer Acceleration when you: • Have customers all over the world who upload to a centralized bucket • Transfer gigabytes or terabytes of data across continents on a regular basis • Underutilize the available bandwidth when uploading to Amazon S3 over the internet
upvoted 1 times
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iamjeffbezos
2 years, 6 months ago
S3 CRR replication time is 15 minutes; transfer acceleration will be faster on company internet connection
upvoted 1 times
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orbpig
2 years, 6 months ago
Selected Answer: A
B has delays
upvoted 1 times
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bigngster
2 years, 8 months ago
Answer:A Both A And B look correct, however with A you’re send the data directly to its destination once. For B you transfer it first to the nearest bucket THEN do another copy prob as a batch. This causes two delays, the time to copy 2nd time and second you wait for sync schedule.
upvoted 2 times
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VijiTu
2 years, 11 months ago
Easiest and pretty straight... Answer A Snowball wont work as it should do daily analysis
upvoted 1 times
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BJAGL
3 years ago
Selected Answer: A
A is correct answer
upvoted 1 times
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FF11
3 years, 3 months ago
Selected Answer: A
Sorry, A is correct answer.
upvoted 1 times
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FF11
3 years, 3 months ago
Selected Answer: B
B is correct.
upvoted 1 times
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tototo
3 years, 4 months ago
Selected Answer: A
I would pick A
upvoted 1 times
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gargaditya
3 years, 5 months ago
Adding to comments, C is eliminated because we need SPEEDIEST method, Snowball use case is to transfer large data for migration(into S3 only) but its physical shipping. Note, Snowcone offers online upload facility using AWS Data Sync(upto 8 TB capacity), but I would have chosen that if there was no additional S3 cross region replication mentioned. Its still not the speediest.
upvoted 1 times
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woke
3 years, 6 months ago
A. Enable Amazon S3 Transfer Acceleration on the destination bucket. Use multipart uploads to directly upload site data to the destination bucket.
upvoted 2 times
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bipuljaishwal
3 years, 6 months ago
A is correct. Transfer Acceleration (option A) will first get the data into the nearest AWS data center OR nearest Edge Locations. Option B will get the data into the nearest AWS center. Once it reaches the data center or edge location, both methods will use AWS's internal network. So it's clear that option B is slower (because it doesn't use edge location as the first destination). Additionally, it's a bad solution as well - you're inducing additional charges for the unnecessary buckets in each region and additional costs to transfer S3 cross regions
upvoted 2 times
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co_cuex
3 years, 6 months ago
Not B. because no need replication. A for sure
upvoted 2 times
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syu31svc
3 years, 6 months ago
I would pick A https://aws.amazon.com/s3/transfer-acceleration/#:~:text=S3%20Transfer%20Acceleration%20(S3TA)%20reduces,to%20S3%20for%20remote%20applications: "Amazon S3 Transfer Acceleration can speed up content transfers to and from Amazon S3 by as much as 50-500% for long-distance transfer of larger objects. Customers who have either web or mobile applications with widespread users or applications hosted far away from their S3 bucket can experience long and variable upload and download speeds over the Internet" https://docs.aws.amazon.com/AmazonS3/latest/userguide/mpuoverview.html: "Improved throughput - You can upload parts in parallel to improve throughput." Furthermore, it's about SPEED we are looking at
upvoted 2 times
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C (25%)
B (20%)
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