Google Professional Data Engineer Question 136
Select 2Google Cloud PlatformYour organization stores vast amounts of data in Google Cloud Storage and wants to optimize costs by implementing a lifecycle management policy. The data is initially accessed frequently but becomes infrequently accessed after 30 days and can be archived after 90 days. Which of the following lifecycle policy configurations will best meet these requirements while minimizing costs?
- A
Set a lifecycle rule to transition objects to the 'Nearline' storage class after 30 days and to the 'Coldline' storage class after 90 days.
- B
Set a lifecycle rule to delete objects after 90 days.
- C
Set a lifecycle rule to transition objects to the 'Coldline' storage class after 30 days and to the 'Archive' storage class after 90 days.
- D
Set a lifecycle rule to transition objects to the 'Standard' storage class after 30 days and to delete them after 90 days.
- E
Set a lifecycle rule to transition objects to the 'Nearline' storage class after 30 days and to the 'Archive' storage class after 90 days.
Show answer and explanation
Correct answers: A, E
Explanation
To optimize costs with lifecycle management in Google Cloud Storage, data should be transitioned to storage classes that align with access patterns. 'Nearline' is suitable for infrequently accessed data (30–90 days), while 'Coldline' or 'Archive' is cost-effective for long-term storage (90+ days). Both configurations (options 1 and 5) meet the requirements and minimize costs while adhering to the specified data access patterns.
- A. Correct.
Correct. Transitioning objects to 'Nearline' after 30 days and 'Coldline' after 90 days aligns with the requirements of infrequent access after 30 days and archiving after 90 days while minimizing costs.
- B. Incorrect.
Incorrect. Deleting objects after 90 days does not align with the requirement to archive them for future use.
- C. Incorrect.
Incorrect. Transitioning objects to 'Coldline' after 30 days is not cost-effective for data that is still infrequently accessed, and 'Archive' storage is more suitable for long-term retention after 90 days.
- D. Incorrect.
Incorrect. The 'Standard' storage class is designed for frequently accessed data, which does not meet the requirements for cost optimization after 30 days. Additionally, deleting objects after 90 days does not align with the requirement to archive them.
- E. Correct.
Correct. Transitioning objects to 'Nearline' after 30 days and 'Archive' after 90 days is another valid configuration that meets the requirements and minimizes costs for long-term storage.