SOA-C02 · Question #645
A company migrated a two-tier web application from an on-premises environment to AWS by using a rehost strategy. The company hosts the web tier on Amazon EC2 instances in a public subnet. The…
The correct answer is A. Place the web-tier instances in an Auto Scaling group. Configure the Auto Scaling group to D. Use AWS Database Migration Service (AWS DMS) to migrate the database EC2 instance to. Migrating the web tier into an Auto Scaling group deployed in private subnets behind an internet- facing Application Load Balancer improves security by limiting direct internet exposure and enhances availability via Multi-AZ deployment. Migrating the SQL Server database from an…
Question
A company migrated a two-tier web application from an on-premises environment to AWS by using a rehost strategy. The company hosts the web tier on Amazon EC2 instances in a public subnet. The instances have Elastic IP addresses. The database tier is a single EC2 instance that runs Microsoft SQL Server. All the resources are in one Availability Zone. A SysOps administrator must implement a new architecture to improve the application's security and make the application highly available. The new architecture must require minimum application code changes and administrative overhead. Which combination of steps will meet these requirements? (Choose two.)
Options
- APlace the web-tier instances in an Auto Scaling group. Configure the Auto Scaling group to
- BPlace the web-tier instances in an Auto Scaling group. Configure the Auto Scaling group in
- CLaunch an additional EC2 instance to host SQL Server. Place the new database EC2 instance in
- DUse AWS Database Migration Service (AWS DMS) to migrate the database EC2 instance to
- EUse AWS Database Migration Service (AWS DMS) to migrate the database EC2 instance to
How the community answered
(25 responses)- A80% (20)
- B4% (1)
- C4% (1)
- E12% (3)
Explanation
Migrating the web tier into an Auto Scaling group deployed in private subnets behind an internet- facing Application Load Balancer improves security by limiting direct internet exposure and enhances availability via Multi-AZ deployment. Migrating the SQL Server database from an EC2 instance to Amazon RDS for SQL Server with Multi-AZ deployment using Database Mirroring minimizes administrative overhead while increasing the database tier's availability.
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