DOP-C02 Question #312: Real Exam Question with Answer & Explanation

Question

A company uses an Amazon Aurora PostgreSQL global database that has two secondary AWS Regions. A DevOps engineer has configured the database parameter group to guarantee an RPO of 60 seconds. Write operations on the primary cluster are occasionally blocked because of the RPO setting. The DevOps engineer needs to reduce the frequency of blocked write operations. Which solution will meet these requirements?

Options

• AAdd an additional secondary cluster to the global database.
• BEnable write forwarding for the global database.
• CRemove one of the secondary clusters from the global database.
• DConfigure synchronous replication for the global database.

Explanation

Blocked write operations in a global database can occur due to the replication lag, especially when there are multiple secondary clusters. Each secondary cluster can introduce latency that affects the replication speed and can block write operations on the primary cluster to maintain the Recovery Point Objective (RPO). By removing one of the secondary clusters, you reduce the number of secondary regions that the primary cluster has to keep in sync, thereby reducing the replication load. This helps improve write performance and reduces the frequency of blocked write operations while still maintaining an acceptable RPO.

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