Exam AWS Certified SysOps Administrator - Associate topic 1 question 18 discussion

100% B. This scenario is explained at https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/EBSSnapshots.html#how_snapshots_work

1. First Snapshot: The entire volume is captured in the first snapshot, so it requires storage equivalent to the size of the volume, which is 10 GiB. 2. Second Snapshot: Only the changed blocks since the first snapshot are stored. In this case, 4 GiB have changed, so the storage required for the second snapshot is 4 GiB. 3. Third Snapshot: Only the changed blocks since the second snapshot are stored. In this case, 2 GiB have been added, so the storage required for the third snapshot is 2 GiB. The total storage required is the sum of the storage for each snapshot: 10 GiB + 4 GiB + 2 GiB = 16 GiB So, the total storage required to store these three snapshots is 16 GiB.

Amazon EBS snapshots are incremental, meaning only the data changed after the first snapshot is saved. The first snapshot captures 10 GiB, the second snapshot only saves the 4 GiB that changed, and the third snapshot only saves the newly added 2 GiB. Therefore, the total storage required is the initial 10 GiB plus the total of 6 GiB for added/changed data (4 GiB + 2 GiB), making it 12 GiB in total, not 16 GiB.

B is correct, 10+4+2=16GiB

Answer is B: Original 10 + 4 (changed data) + 2 (new data) = 16

this is a math question, not aws

The first snapshot that you create from a volume is always a full snapshot. It includes all of the data blocks written to the volume at the time of creating the snapshot. Subsequent snapshots of the same volume are incremental snapshots. They include only changed and new data blocks written to the volume since the last snapshot was created.

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ANS: B

https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/EBSSnapshots.html#how_snapshots_work

D. Incremental snapshots.

Due to incremental snapshots?