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Exam AWS DevOps Engineer Professional topic 1 question 167 discussion

Exam question from Amazon's AWS DevOps Engineer Professional
Question #: 167
Topic #: 1
[All AWS DevOps Engineer Professional Questions]

A company is using AWS Database Migration Service (AWS DMS) to replicate data from a source database in a data center to a target Amazon Aurora PostgreSQL database. The company has created a DMS replication task with change data capture (CDC).

The replication instance sometimes gets interrupted and affects critical functionality. The company must improve the replication instance's resiliency and receive notifications about interruptions.

Which solution will meet these requirements with the LEAST operational overhead?

  • A. Copy data from the source database to Amazon S3 by using AWS DataSync. Configure AWS Lambda functions to copy the data to the target database. Configure Amazon CloudWatch alarms to monitor the Lambda functions for errors and throttles. Use an Amazon Simple Notification Service (Amazon SNS) topic for email notification.
  • B. Create Amazon CloudWatch alarms to monitor DMS replication task metrics and host metrics. Use an Amazon Simple Notification Service (Amazon SNS) topic for email notification and to invoke an AWS Lambda function to configure a standby DMS replication instance in a different AWS Region.
  • C. Create Amazon CloudWatch alarms to monitor DMS replication task metrics and host metrics. Use an Amazon Simple Notification Service (Amazon SNS) topic for email notification. After receiving the notification, configure a new DMS replication task in the same AWS Region.
  • D. Modify the DMS replication instance by tuming on Multi-AZ support. Create Amazon CloudWatch alarms to monitor DMS replication task metrics and host metrics. Use an Amazon Simple Notification Service (Amazon SNS) topic for email notification.
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Suggested Answer: D 🗳️
by Oleg_gol at Jan. 15, 2023, 1:44 p.m.
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bgc1
2 years, 2 months ago
Selected Answer: D
You can modify dms instance to enable multi az - https://awscli.amazonaws.com/v2/documentation/api/latest/reference/dms/modify-replication-instance.html
upvoted 1 times
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Piccaso
2 years, 2 months ago
Selected Answer: D
"With Availability Zones, you can design and operate applications and databases that automatically fail over between zones without interruption. Availability Zones are more highly available, fault tolerant, and scalable than traditional single or multiple data center infrastructures." https://docs.aws.amazon.com/mgn/latest/ug/disaster-recovery-resiliency.html
upvoted 2 times
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Bulti
2 years, 3 months ago
D is correct. The keyword is "to make the DMS replication instance resilient". This should ring Multi-AZ.
upvoted 3 times
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DerekKey
2 years, 3 months ago
Selected Answer: D
C - doesn't make sense - you don't have to create new task you can restart exisrting task if you have storage D - If you use AWS DMS for ongoing replication purposes, choosing a Multi-AZ instance can improve your availability should a storage issue occur. When using a single AZ or Multi-AZ replication instance during a FULL LOAD and a failover or host replacement occurs, the full load task is expected to fail. You can restart the task from the point of failure for the remaining tables that didn't complete, or are in an error state.
upvoted 2 times
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saeidp
2 years, 3 months ago
Selected Answer: D
I go with D. Question is asking about least operational overhead. By the way multi-AZ allows continuous data replication by enabling redundant replication instances https://aws.amazon.com/dms/features/
upvoted 3 times
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Oleg_gol
2 years, 3 months ago
Selected Answer: C
i vote c
upvoted 2 times
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