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Papers/Practice Exam 3.md

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+# Practice Exam 3 Mistakes
+
+---
+#### A Developer is creating a DynamoDB table for storing application logs. The table has 5 write capacity units (WCUs). The Developer needs to configure the read capacity units (RCUs) for the table. Which of the following configurations represents the most efficient use of throughput?
+
+- Eventually consistent reads of 5 RCUs reading items that are 4 KB in size
+x Strongly consistent reads of 5 RCUs reading items that are 4 KB in size
+- Eventually consistent reads of 15 RCUs reading items that are 1 KB in size
+- Strongly consistent reads of 15 RCUs reading items that are 1KB in size
+
+> [!note] Correct Answer
+> Eventually consistent reads of 15 RCUs reading items that are 1 KB in size
+
+> [!caution] Explanation 
+>Among these options, the most cost-efficient in terms of maximizing the number of read operations per RCU is:
+>**Eventually consistent reads of 15 RCUs reading items that are 1 KB in size.**
+> 
+>This choice utilizes the RCU allocation most effectively because:
+>- It leverages the lower RCU consumption of eventually consistent reads.
+>- It takes advantage of the smaller item size (1 KB), which requires fewer RCUs for the same number of operations compared to items up to 4 KB.
+---