Test 3

[Samli]

2. Question

Category: CSAP – Continuous Improvement for Existing Solutions

A company is hosting its three-tier web application on the us-east-1 region of AWS. The web and application tiers are stateless and both are running on their own fleet of On-Demand Amazon EC2 instances, each with its respective Auto Scaling group. The database tier is running on an Amazon Aurora database with about 40 TB of data. As part of the business continuity strategy of the company, the Solutions Architect must design a disaster recovery plan in case the primary region fails. The application requires an RTO of 30 minutes and the data tier requires an RPO of 5 minutes.

Which of the following options should the Solution Architect implement to achieve the company requirements in a cost-effective manner? (Select TWO.)

I believe 2 and 4 is answer. I mnot sure how “Schedule a daily snapshot of the Amazon EC2 instances for the web and application tier. Copy the snapshot to the backup region. Restore the backups in case of a disaster in the primary region.” be helpful

[Samli]

Hello any update on this?

A stateless application is an application that doesn’t store any client-specific information or session data on the server between requests. Each request from a client to the server is treated independently, with no reference to previous interactions.

I dont understand why option 5 is answer not 2??

[JR-TutorialsDojo]

Hello Samli,

Thank you for your feedback.

Please note that the question explicitly asked for a cost-effective solution.

The option that suggests setting up a hot-standby of web and application tier on the backup region and redirecting traffic in case of a disaster, while technically possible, is not the most cost-effective solution. This is because it requires a significant number of resources to be continuously running.

For a recovery time objective (RTO) of 30 minutes, a more efficient approach would be to restore backups of the EC2 snapshots for the web and application tiers, rather than maintaining a hot-standby environment.

It’s important to note that in disaster recovery, a “hot-standby” refers to the application running in the DR region. Since it’s always running, the associated costs can be quite substantial.

Make sure to read the question and the explanations carefully.

I hope this helps! Let us know if you need further clarification.

Regards,
JR @ Tutorials Dojo