Amazon DOP-C02 Exam - Topic 3 Question 54 Discussion

Actual exam question for Amazon's DOP-C02 exam

Question #: 54
Topic #: 3

A company manages a web application that runs on Amazon EC2 instances behind an Application Load Balancer (ALB). The EC2 instances run in an Auto Scaling group across multiple Availability Zones. The application uses an Amazon RDS for MySQL DB instance to store the dat

a. The company has configured Amazon Route 53 with an alias record that points to the ALB.

A new company guideline requires a geographically isolated disaster recovery (DR> site with an RTO of 4 hours and an RPO of 15 minutes.

Which DR strategy will meet these requirements with the LEAST change to the application stack?

ALaunch a replica environment of everything except Amazon RDS in a different Availability Zone Create an RDS read replica in the new Availability Zone: and configure the new stack to point to the local RDS DB instance. Add the new stack to the Route 53 record set by using a hearth check to configure a failover routing policy.

BLaunch a replica environment of everything except Amazon RDS in a different AWS. Region Create an RDS read replica in the new Region and configure the new stack to point to the local RDS DB instance. Add the new stack to the Route 53 record set by using a health check to configure a latency routing policy.

CLaunch a replica environment of everything except Amazon RDS ma different AWS Region. In the event of an outage copy and restore the latest RDS snapshot from the primary. Region to the DR Region Adjust the Route 53 record set to point to the ALB in the DR Region.

DLaunch a replica environment of everything except Amazon RDS in a different AWS Region. Create an RDS read replica in the new Region and configure the new environment to point to the local RDS DB instance. Add the new stack to the Route 53 record set by using a health check to configure a failover routing policy. In the event of an outage promote the read replica to primary.

Show Suggested Answer

Suggested Answer: D

by Kristeen at Oct 19, 2025, 07:47 PM

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Kayleigh

9 days ago

I feel like option D covers all bases. It’s comprehensive.

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Dorsey

14 days ago

Option C seems risky. Restoring from a snapshot takes time.

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Shawna

19 days ago

I agree, but option D sounds solid too. Promoting the read replica is smart.

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Shanice

24 days ago

Option D covers all bases, but it feels like a lot of work!

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Gracie

30 days ago

I’m not sure about C, copying snapshots sounds risky for RTO.

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Roselle

1 month ago

Wait, why not just use option A? Seems simpler to me.

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Carin

1 month ago

I think D is the best choice, promoting the read replica is smart!

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Valentin

2 months ago

Haha, I bet the exam writers are hoping we don't just pick the longest answer option!

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Dominque

2 months ago

D is the way to go. Promoting the read replica to primary in the event of an outage is a nice failover mechanism.

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Johnetta

2 months ago

I agree, D looks like the best option. Keeping the RDS instance as a read replica in the DR region is a smart move.

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Von

2 months ago

Option D seems like the most straightforward approach to meet the RTO and RPO requirements.

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Wilda

2 months ago

I think option D is the way to go. It meets the RTO and RPO requirements, and the changes to the existing stack are minimal. The read replica promotion is a well-established DR technique, so I feel confident in that approach.

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Dallas

3 months ago

I think option B is the best choice. It meets the RTO and RPO requirements.

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Carri

3 months ago

Option B seems solid, replicating in a different region is key.

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Felicidad

3 months ago

I’m leaning towards option A. It’s simpler and keeps things local.

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Shawnda

3 months ago

Ah, the classic "longest answer is the correct one" strategy. Classic exam tactic!

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Devorah

3 months ago

I'm not sure I fully understand the difference between options B and D. They both involve creating a read replica in a different region, but the routing policy is different. I'll need to think through the implications of each approach.

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Derrick

4 months ago

Option D looks like the best choice to me. Creating a read replica in a different region and promoting it to primary in the event of an outage is a common DR strategy, and it avoids the need to fully replicate the entire environment.

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Stevie

4 months ago

Hmm, I'm a bit confused by the different routing policies mentioned in the options. I'll need to review my notes on Route 53 to make sure I understand the differences between latency and failover routing.

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Berry

4 months ago

This looks like a pretty straightforward disaster recovery question. I think I'll go with option D - it seems to meet the RTO and RPO requirements while making the least changes to the existing application stack.

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Jesusita

2 months ago

I agree, option D seems solid for the requirements.

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Ivan

4 months ago

I recall a practice question about setting up read replicas, and it seems like option B might be the most comprehensive, but it requires more changes than I expected.

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Stefania

4 months ago

I feel like option D could be a strong choice since it involves promoting a read replica, but I'm not entirely clear on how that impacts the RTO.

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Cheryl

5 months ago

I'm a bit unsure about the differences between failover and latency routing policies in Route 53. I think option A might be the safest bet since it keeps things simpler.

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Mammie

5 months ago

I remember we discussed the importance of RTO and RPO in our last study session. I think we need to ensure the DR strategy aligns with those requirements.

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