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Question 332 - SOA-C02 discussion

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A company recently deployed an application in production. The production environment currently runs on a single Amazon EC2 instance that hosts the application's web application and a MariaDB database. Company policy states that all IT production environments must be highly available.

What should a SysOps administrator do to meet this requirement?

A.
Migrale the database from the EC2 instance to an Amazon RDS for MariaDB Multi-AZ DB instance. Run the application on EC2 instances that are in an Auto Scaling group that extends across multiple Availability Zones. Place the EC2 instances behind a load balancer.
Answers
A.
Migrale the database from the EC2 instance to an Amazon RDS for MariaDB Multi-AZ DB instance. Run the application on EC2 instances that are in an Auto Scaling group that extends across multiple Availability Zones. Place the EC2 instances behind a load balancer.
B.
Migrate the database from the EC2 instance to an Amazon RDS for MariaDB Multi-AZ DB instance. Use AWS Application Migration Service to convert the application into an AWS Lambda function. Specify the Multi-AZ option for the Lambda function.
Answers
B.
Migrate the database from the EC2 instance to an Amazon RDS for MariaDB Multi-AZ DB instance. Use AWS Application Migration Service to convert the application into an AWS Lambda function. Specify the Multi-AZ option for the Lambda function.
C.
Copy the database to a different EC2 instance in a different Availability Zone. Use AWS Backup to create Amazon Machine Images (AMIs) of the application EC2 instance and the database EC2 instance. Create an AWS Lambda function that performs health checks every minute. In case of failure, configure the Lambda function to launch a new EC2 instance from the AMIs that AWS Backup created.
Answers
C.
Copy the database to a different EC2 instance in a different Availability Zone. Use AWS Backup to create Amazon Machine Images (AMIs) of the application EC2 instance and the database EC2 instance. Create an AWS Lambda function that performs health checks every minute. In case of failure, configure the Lambda function to launch a new EC2 instance from the AMIs that AWS Backup created.
D.
Migrate the database to a different EC2 instance. Place the application EC2 instance in an Auto Scaling group that extends across multiple Availability Zones. Create an Amazon Machine Image (AMI) from the database EC2 instance. Use the AMI to launch a second database EC2 instance in a different Availability Zone. Put the second database EC2 instance in the stopped state. Use the second database EC2 instance as a standby.
Answers
D.
Migrate the database to a different EC2 instance. Place the application EC2 instance in an Auto Scaling group that extends across multiple Availability Zones. Create an Amazon Machine Image (AMI) from the database EC2 instance. Use the AMI to launch a second database EC2 instance in a different Availability Zone. Put the second database EC2 instance in the stopped state. Use the second database EC2 instance as a standby.
Suggested answer: A

Explanation:

To make the production environment highly available in accordance with company policy:

Database Migration: Move the MariaDB database from a single EC2 instance to Amazon RDS for MariaDB configured for Multi-AZ. This setup ensures high availability of the database with synchronous replication to a standby instance in a different Availability Zone.

Application Scalability: Deploy the application on EC2 instances within an Auto Scaling group. Configure the Auto Scaling group to operate across multiple Availability Zones to ensure that the application remains available even if one zone becomes unavailable.

Load Balancing: Place the EC2 instances behind an Elastic Load Balancer (ELB). The load balancer will distribute incoming application traffic across the multiple, geographically dispersed EC2 instances, further enhancing the availability and fault tolerance of the application.

This solution leverages AWS managed services to increase the reliability and availability of both the application and database layers, adhering to best practices for deploying critical production environments on AWS.

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asked 16/09/2024
Timothy Smith
38 questions
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