Amazon Exam SOA-C02 Topic 2 Question 114 Discussion

Actual exam question for Amazon's SOA-C02 exam

Question #: 114
Topic #: 2

The company wants to improve the security and high availability of a two-tier web application that was rehosted to AWS, currently in a single Availability Zone.

Options (Select TWO):

APlace the web-tier instances in an Auto Scaling group. Configure the Auto Scaling group to support a Multi-AZ deployment into private subnets that are behind an internet-facing Application Load Balancer.

BPlace the web-tier instances in an Auto Scaling group. Configure the Auto Scaling group in multiple AWS Regions. Deploy the EC2 instances into private subnets that are behind an internet-facing Application Load Balancer.

CLaunch an additional EC2 instance to host SQL Server. Place the new database EC2 instance in a second AWS Region. Enable replication between the two database EC2 instances.

DUse AWS Database Migration Service (AWS DMS) to migrate the database EC2 instance to Amazon RDS for SQL Server with Multi-AZ Database Mirroring (DBM).

EUse AWS Database Migration Service (AWS DMS) to migrate the database EC2 instance to Amazon DynamoDB.

Show Suggested Answer

Suggested Answer: A, D

To improve security and availability, the best approach is to configure Multi-AZ for both the web and database tiers.

Multi-AZ Auto Scaling for Web Tier: Deploying the web-tier instances in an Auto Scaling group across multiple AZs with an internet-facing ALB provides high availability and fault tolerance.

RDS Multi-AZ for SQL Server: Migrating the SQL Server to RDS with Multi-AZ deployment ensures database redundancy and failover without additional management overhead.

Placing the web tier in multiple Regions would add unnecessary complexity, and migrating the database to DynamoDB is not suitable for applications requiring SQL Server's relational capabilities.

by Jamey at Apr 05, 2025, 11:03 PM

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Ernest

2 days ago

B is definitely the way to go. Scaling across multiple regions is the ultimate high availability solution. And who needs a database when you can just throw everything into DynamoDB, right? (E)

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Kaitlyn

3 days ago

A and D seem like the best options to improve security and availability. The Auto Scaling group and load balancer in A will provide high availability, and migrating to RDS with Multi-AZ DBM in D will ensure the database is highly available.

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Krissy

18 days ago

I agree with Stefania. Using Auto Scaling group with Multi-AZ deployment is a solid solution.

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Stefania

24 days ago

I think option A is a good choice to improve security and high availability.

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