# AWS-Certified-Database---Specialty — Question 425

**Type:** multiple_choice
**Topics:** topic_1

## Question

A Database Specialist is migrating a 2 TB Amazon RDS for Oracle DB instance to an RDS for PostgreSQL DB instance using AWS DMS. The source RDS Oracle
DB instance is in a VPC in the us-east-1 Region. The target RDS for PostgreSQL DB instance is in a VPC in the use-west-2 Region.
Where should the AWS DMS replication instance be placed for the MOST optimal performance?

## Correct Answer

_See scenario._

## Explanation

C. See the diagram here:
https://docs.aws.amazon.com/dms/latest/userguide/CHAP_ReplicationInstance.VPC.html#CHAP_ReplicationInstance.VPC.Configurations.ScenarioVPCPeer
In fact, all the configurations list on above url prefer the replication instance putting into target vpc region / subnet / az.

**Reference:** examtopics_top_comment

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Source: https://hiexam.net/q/amazon/AWS-Certified-Database---Specialty/425  
Practice (tracked): https://hiexam.net/study/AWS-Certified-Database---Specialty/practice