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Exam AWS Certified Data Engineer - Associate DEA-C01 All Questions

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Exam AWS Certified Data Engineer - Associate DEA-C01 topic 1 question 23 discussion

Exam question from Amazon's AWS Certified Data Engineer - Associate DEA-C01
Question #: 23
Topic #: 1
[All AWS Certified Data Engineer - Associate DEA-C01 Questions]

A company currently stores all of its data in Amazon S3 by using the S3 Standard storage class.
A data engineer examined data access patterns to identify trends. During the first 6 months, most data files are accessed several times each day. Between 6 months and 2 years, most data files are accessed once or twice each month. After 2 years, data files are accessed only once or twice each year.
The data engineer needs to use an S3 Lifecycle policy to develop new data storage rules. The new storage solution must continue to provide high availability.
Which solution will meet these requirements in the MOST cost-effective way?

  • A. Transition objects to S3 One Zone-Infrequent Access (S3 One Zone-IA) after 6 months. Transfer objects to S3 Glacier Flexible Retrieval after 2 years.
  • B. Transition objects to S3 Standard-Infrequent Access (S3 Standard-IA) after 6 months. Transfer objects to S3 Glacier Flexible Retrieval after 2 years.
  • C. Transition objects to S3 Standard-Infrequent Access (S3 Standard-IA) after 6 months. Transfer objects to S3 Glacier Deep Archive after 2 years.
  • D. Transition objects to S3 One Zone-Infrequent Access (S3 One Zone-IA) after 6 months. Transfer objects to S3 Glacier Deep Archive after 2 years.
Show Suggested Answer Hide Answer
Suggested Answer: C 🗳️
by TonyStark0122 at Feb. 1, 2024, 11:05 p.m.
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helpaws
Highly Voted 3 weeks, 6 days ago
Selected Answer: B
"S3 Glacier Flexible Retrieval delivers low-cost storage, up to 10% lower cost (than S3 Glacier Instant Retrieval), for archive data that is accessed 1-2 times per year and is retrieved asynchronously" Source: https://aws.amazon.com/s3/storage-classes/glacier/
upvoted 10 times
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michele_scar
Most Recent 2 weeks ago
Selected Answer: C
It's C, the request is about "High availability" not "Less time to retrieve the data". The other request is "most cost effective" so deleting A and D for the HA, remains B and C that both satisfy the HA. Now choose the most cost effective --> C
upvoted 1 times
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theloseralreadytaken
3 weeks, 2 days ago
Selected Answer: B
Galcier Deep Archive take longer retrieval time (hours to days) than Glacier Flexible Retrieval.
upvoted 1 times
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GZMartinelli
1 month ago
Selected Answer: B
Should be B. The questions asks for high availability, when a file is in Glacier Deep Archive, it takes more time to be available to use.
upvoted 1 times
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shammous
1 month, 1 week ago
Selected Answer: B
To retrieve data from the S3 Glacier Deep Archive, you need more than 12 hours! The scenario mentions that we still need to access data instantly once or twice yearly. S3 Glacier Flexible Retrieval is more appropriate in this case.
upvoted 1 times
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sachin
2 months ago
• S3 Glacier Instant Retrieval delivers the lowest cost storage, up to 68% lower cost (than S3 Standard-Infrequent Access), for long-lived data that is accessed once per quarter and requires millisecond retrieval. • S3 Glacier Flexible Retrieval delivers low-cost storage, up to 10% lower cost (than S3 Glacier Instant Retrieval), for archive data that is accessed 1-2 times per year and is retrieved asynchronously. • S3 Glacier Deep Archive delivers the lowest cost storage, up to 75% lower cost (than S3 Glacier Flexible Retrieval), for long-lived archive data that is accessed less than once per year and is retrieved asynchronously.
upvoted 1 times
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andrologin
2 months, 4 weeks ago
Selected Answer: B
Based on this link https://aws.amazon.com/s3/storage-classes/glacier/ Glacier Flexible Retrieval is cheaper that Instant Retrieval
upvoted 2 times
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LR2023
3 months, 1 week ago
questions doesnt provide clairty on when data is accessed does it need to made available instantly or not. Deep archive times are longer.
upvoted 2 times
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imymoco
3 months, 1 week ago
B https://aws.amazon.com/jp/about-aws/whats-new/2021/11/amazon-s3-glacier-storage-class-amazon-s3-glacier-flexible-retrieval/
upvoted 1 times
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Khooks
3 months, 3 weeks ago
Selected Answer: C
Answer should be C. B: While this option transitions to S3 Glacier Flexible Retrieval after 2 years, which provides quicker retrieval times than Glacier Deep Archive, it is more expensive. Given the infrequent access pattern after 2 years, the additional cost is not justified.
upvoted 1 times
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Fexo
4 months, 1 week ago
Selected Answer: B
Answer is B, because Object needs to be retrieved once / twice monthly , hence GFR S3 Glacier Flexible Retrieval delivers low-cost storage, up to 10% lower cost (than S3 Glacier Instant Retrieval), for archive data that is accessed 1-2 times per year and is retrieved asynchronously https://aws.amazon.com/s3/storage-classes/glacier/
upvoted 1 times
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tgv
4 months, 3 weeks ago
Selected Answer: C
I will go with C because Glacier Flexible Retrieval is way more expensive than Glacier Deep Archive.
upvoted 1 times
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Just_Ninja
5 months, 1 week ago
Selected Answer: C
HA and cost effective. Here is no hint in the question for instant access..
upvoted 2 times
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Christina666
6 months, 1 week ago
Selected Answer: C
HA - C
upvoted 1 times
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lucas_rfsb
6 months, 2 weeks ago
Selected Answer: C
Since it was requested high availability, then can't be Standard One Zone. And in the end of 2 years it was asked for the most cost effective, than Glacier Deep Archive.
upvoted 4 times
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arvehisa
6 months, 3 weeks ago
Selected Answer: C
2 requirements: 1)highly available 2) cost-effective. no mention about load time so C is correct.
upvoted 2 times
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blackgamer
6 months, 3 weeks ago
Selected Answer: C
The question mention "the most cost-effective way". C is most cost-effective and still highly available. The requirement doesn't indicate the retrieval time requirement.
upvoted 2 times
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