An e-commerce platform generates two types of files that are stored in an Amazon S3 bucket… — AWS Certified Solutions Architect - Associate

An e-commerce platform generates two types of files that are stored in an Amazon S3 bucket:

* Hourly transaction summaries: Average file size of $450\text{ KB}$ . These files are accessed frequently during the first $15\text{ days}$ for financial reconciliation, and rarely thereafter. They must be available for immediate download in the event of an audit over a $1\text{-year}$ retention period.
* Raw server access logs: Average file size of $20\text{ MB}$ . These logs are kept for $90\text{ days}$ for security analysis. They are rarely accessed, but if they are needed for a security investigation, a retrieval time of $3$ to $5\text{ hours}$ is acceptable.

Which combination of Amazon S3 Lifecycle rules will provide the most cost-optimized storage solution? (Select TWO.)

Transition the hourly transaction summaries to Amazon S3 Standard-Infrequent Access (S3 Standard-IA) $30\text{ days}$ after object creation.Cevap
Transition the raw server access logs to Amazon S3 Glacier Flexible Retrieval immediately after object creation, and expire them after $90\text{ days}$ .Cevap
C
Transition the hourly transaction summaries to Amazon S3 Standard-Infrequent Access (S3 Standard-IA) $15\text{ days}$ after object creation.
D
Transition the raw server access logs to Amazon S3 Standard-Infrequent Access (S3 Standard-IA) immediately after object creation, and expire them after $15\text{ days}$ .
E
Transition the hourly transaction summaries to Amazon S3 Glacier Flexible Retrieval $30\text{ days}$ after object creation.

Cevap

The correct combination of lifecycle rules is to transition the hourly transaction summaries to Amazon S3 Standard-IA after

30\text{ days}

, and transition the raw server access logs to Amazon S3 Glacier Flexible Retrieval immediately and expire them after

90\text{ days}

For the hourly transaction summaries, S3 Standard-IA is the most cost-optimized tier because the files are larger than the

128\text{ KB}

transition threshold, are accessed infrequently after

15\text{ days}

, and must support immediate download. Since S3 Lifecycle rules require objects to stay in S3 Standard for a minimum of

30\text{ days}

before transitioning to S3 Standard-IA, transitioning them after

30\text{ days}

is the most cost-effective correct configuration. For the raw server access logs, the

20\text{ MB}

files are large enough for Glacier storage without excessive metadata overhead, can tolerate a

3

5\text{ hour}

retrieval window, and are retained for

90\text{ days}

. Transitioning them immediately to S3 Glacier Flexible Retrieval minimizes costs, and expiring them after

90\text{ days}

aligns with the retention requirement while satisfying the

90\text{-day}

minimum storage duration of Glacier Flexible Retrieval, avoiding early deletion penalties.

Adım Adım Çözüm

Analyze requirements for the hourly transaction summaries.

The transaction summaries require immediate download and a

1\text{-year}

retention. They are accessed rarely after

15\text{ days}

. Their average size is

450\text{ KB}

, which is above the

128\text{ KB}

minimum size limit for S3 Standard-IA transition.

To identify if S3 Standard-IA is the correct tier and determine the size and retrieval constraints.

Check the S3 Standard-IA transition constraint.

S3 Lifecycle configurations require objects to remain in S3 Standard for at least

30\text{ days}

before transitioning to S3 Standard-IA or S3 One Zone-IA.

To determine the earliest possible transition window for S3 Standard-IA.

Analyze requirements for the raw server access logs.

The logs are

20\text{ MB}

each, are kept for

90\text{ days}

, and can tolerate a retrieval time of

3

5\text{ hours}

. This makes S3 Glacier Flexible Retrieval (standard retrieval) the most cost-effective tier.

To determine the correct target tier based on file size, access frequency, retrieval window, and retention period.

Verify Glacier minimum storage duration constraints.

S3 Glacier Flexible Retrieval has a

90\text{-day}

minimum storage duration. Expiring the logs after

90\text{ days}

matches the retention requirement and avoids early deletion penalties.

To verify that deleting the logs at

90\text{ days}

does not trigger extra charges.

Anahtar Kavram

Selecting S3 storage tiers based on access frequency, file size, retrieval time, and S3 Lifecycle minimum transition and storage duration rules.

Soru

Cevap

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Anahtar Kavram

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