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Exam AWS Certified Machine Learning - Specialty topic 1 question 267 discussion

Exam question from Amazon's AWS Certified Machine Learning - Specialty
Question #: 267
Topic #: 1
[All AWS Certified Machine Learning - Specialty Questions]

A company is deploying a new machine learning (ML) model in a production environment. The company is concerned that the ML model will drift over time, so the company creates a script to aggregate all inputs and predictions into a single file at the end of each day. The company stores the file as an object in an Amazon S3 bucket. The total size of the daily file is 100 GB. The daily file size will increase over time.

Four times a year, the company samples the data from the previous 90 days to check the ML model for drift. After the 90-day period, the company must keep the files for compliance reasons.

The company needs to use S3 storage classes to minimize costs. The company wants to maintain the same storage durability of the data.

Which solution will meet these requirements?

  • A. Store the daily objects in the S3 Standard-InfrequentAccess (S3 Standard-IA) storage class. Configure an S3 Lifecycle rule to move the objects to S3 Glacier Flexible Retrieval after 90 days.
  • B. Store the daily objects in the S3 One Zone-Infrequent Access (S3 One Zone-IA) storage class. Configure an S3 Lifecycle rule to move the objects to S3 Glacier Flexible Retrieval after 90 days.
  • C. Store the daily objects in the S3 Standard-InfrequentAccess (S3 Standard-IA) storage class. Configure an S3 Lifecycle rule to move the objects to S3 Glacier Deep Archive after 90 days.
  • D. Store the daily objects in the S3 One Zone-Infrequent Access (S3 One Zone-IA) storage class. Configure an S3 Lifecycle rule to move the objects to S3 Glacier Deep Archive after 90 days.
Show Suggested Answer Hide Answer
Suggested Answer: C 🗳️
by ADVIT at July 8, 2023, 6:08 a.m.
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Comments

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Denise123
3 weeks ago
Selected Answer: C
obvious. no need retrieval time to be short.
upvoted 1 times
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Gmishra
1 month, 2 weeks ago
Selected Answer: C
You cannot achieved durability in standard IA
upvoted 1 times
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AIWave
2 months, 2 weeks ago
Selected Answer: C
Lowest cost - past 90 days in deep archive. Access only 4 times an year - standard IA - we need to be able to recover data in case of a zone failure
upvoted 1 times
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rav009
3 months, 1 week ago
Selected Answer: D
the question only mentions "the same durability" and "minimize cost". It didn't mention "availability" So D
upvoted 3 times
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Kampton
3 months, 1 week ago
If the company is required to "must" keep the files after 90 days then what happens if One Zone is hit by a disaster?! Therefore option "C" is the best solution here.
upvoted 1 times
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CloudHandsOn
4 months ago
Selected Answer: C
If the company can tolerate retrieval times of several hours and is looking for the lowest cost solution, Option C is the best choice over D, as S3 Glacier Deep Archive offers the lowest storage cost.
upvoted 2 times
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Jahm
6 months ago
Selected Answer: C
S3 Standard-IA : Designed for 99.9% availability over a given year S3 One Zone-IA : Designed for 99.5% availability over a given year https://aws.amazon.com/s3/storage-classes/?nc1=h_ls
upvoted 2 times
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geoan13
6 months ago
Answer C Not A - S3 Glacier Flexible Retrieval is not needed. it cost more than Glacier Deep Archive. And the question doesnt mention to retrieve the file immediately when neede. Not B - Although One Zone-Infrequent Access is possible, the question doesnt mention thre is another copy of files somewhere else or there is no problem if some files are lost. Although the loss of data is very rare we use One Zone-Infrequent Access for data that can tolerate loss.
upvoted 2 times
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giustino98
6 months, 2 weeks ago
Selected Answer: D
"Amazon S3 Standard, S3 Standard-IA, S3 One Zone-IA, and Amazon Glacier, are all designed for 99.999999999% durability." One Zone is as durable as Standard but cheaper than Standard IA. Glacier Deep Archive is cheaper than Flexible Retrieval. D is the cheapest (without compromising on durability).
upvoted 3 times
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backbencher2022
7 months, 2 weeks ago
Selected Answer: D
D is the right option because S3 One Zone-Infrequent Access has the same durability (11 nines) as S3 Standard-IA with an added benefit of 20% less cost than S3 Standard-IA. Only downside is that One-Zone is less resilient than Standard-IA as data is not replicated to multiple AZs. This question is asking about durability not resiliency. Also, option D has the cheapest archival option (Glacier Deep Archive) which comes with 11 nines durability so, daily data files and archived files will have the same durability.
upvoted 2 times
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loict
8 months, 1 week ago
Selected Answer: C
A. NO - can store in cheapest Glacier Deep Archive after 90 days B. NO - can store in cheapest Glacier Deep Archive after 90 days C. YES D. NO - need multiple zones for higher resiliency due to legal requirements
upvoted 1 times
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goku58
8 months, 2 weeks ago
Selected Answer: D
"Amazon S3 Standard, S3 Standard-IA, S3 One Zone-IA, and Amazon Glacier, are all designed for 99.999999999% durability." One Zone is as durable as Standard but cheaper than Standard IA. Glacier Deep Archive is cheaper than Flexible Retrieval. D is the cheapest (without compromising on durability).
upvoted 2 times
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chet100
8 months, 3 weeks ago
Go for A
upvoted 1 times
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kaike_reis
9 months ago
Selected Answer: A
If we want to maintain the same durability, we cannot use One Zone, given the importance of maintaining these data for the quality of the model (thus, we discard B - D). As we want to minimize the cost and we need to access the data every 90 days, the correct alternative is Letter A as the minimum recovery time is 90 days for S3 Glacier Flexible Retrieval (in contrast, Deep Archive needs 180 days to be accessed ).
upvoted 2 times
devakram
3 months, 3 weeks ago
Where the hell did you source your info? 180 days to be accessed?!!: - S3 Glacier Instant Retrieval for archiving data that might be needed once per quarter and needs to be restored quickly (milliseconds) - S3 Glacier Flexible Retrieval for archiving data that might infrequently need to be restored, once or twice per year, within a few hours - S3 Glacier Deep Archive for archiving long-term backup cycle data that might infrequently need to be restored within 12 hours https://docs.aws.amazon.com/prescriptive-guidance/latest/backup-recovery/amazon-s3-glacier.html
upvoted 1 times
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Mickey321
9 months, 2 weeks ago
Selected Answer: C
Indeed option C
upvoted 1 times
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awsarchitect5
10 months ago
Selected Answer: C
C it is
upvoted 1 times
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ADVIT
10 months, 2 weeks ago
Selected Answer: C
For same storage Durability we should NOT use S3 One Zone-IA. For Glacier we will use Deep Archive for more cost saving. So it's C
upvoted 2 times
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