Explanation:
30
A write capacity unit represents one write per second, for an item up to 1 KB in size.
Item sizes for writes are rounded up to the next 1 KB multiple. For example, writing a 500-byte item consumes the same throughput as writing a 1 KB item. So, for the given use-case, each object is of size 4.5 KB, which will be rounded up to 5KB.
Therefore, for 6 objects, you need 6x5 = 30 WCUs.
Incorrect options:
24
15
46
These three options contradict the details provided in the explanation above, so these are incorrect.
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You are a DynamoDB developer for an aerospace company. The company's requirements stipulate that you need to write 6 items per second into the DynamoDB table, with each item having a size of 4.5KB.
Based on this information, calculate the necessary write capacity units (WCUs) required for your project in DynamoDB.
A
30
B
24
C
46
D
15