Launch a multi-AZ MySQL Amazon RDS instance in one availability zone only.

[seth_e]

This is part of an answer
> Launch a multi-AZ MySQL Amazon RDS instance in one availability zone only.

If it is multi-AZ then it is by definition in two availability zones. “multi-AZ” and “one availability zone” make no sense

[Amiel-Palacol-TutorialsDojo]

Hi seth_e,

Thank you for posting your question. For clarity, let me share the actual question here:

A company is migrating an interactive car registration web system hosted on its on-premises network to AWS Cloud. The current architecture of the system consists of a single NGINX web server and a MySQL database running on a Fedora server, which both reside in their on-premises data center. For the new cloud architecture, a load balancer must be used to evenly distribute the incoming traffic to the application servers. Route 53 must be used for both domain registration and domain management.

In this scenario, what would be the most efficient way to transfer the web application to AWS?

The provided answer is as follows:
1. Launch two NGINX EC2 instances in two Availability Zones.
2. Copy the web files from the on-premises web server to each Amazon EC2 web server, using Amazon S3 as the repository.
3. Migrate the database using the AWS Database Migration Service.
4. Create an ELB to front your web servers.
5. Use Route 53 and create an alias A record pointing to the ELB.

We do understand that the item “Launch a multi-AZ MySQL Amazon RDS instance in one availability zone only.” is included in the wrong options. This statement is not included in the correct answer.

To avoid any confusion, we will just replace the explanation with:

This is a trick question that contains a lot of information to confuse you, especially if you don’t know the fundamental concepts of AWS. All options seem to be correct except for their last steps in setting up Route 53. The options that has a step to launch a multi-AZ MySQL Amazon RDS instance in one availability zone only are wrong since a Multi-AZ deployment configuration uses multiple Availability Zones.

Let us know if you need further assistance. The Tutorials Dojo team is dedicated to help you pass your AWS exam on your first try!

Regards,

Amiel Palacol @ Tutorials Dojo