The answer is AWS CloudFormation. This service is the correct choice because it enables you to automate RDS deployment with CloudFormation by defining your entire infrastructure—including the RDS for SQL Server instance, VPC, subnets, and security groups—as reusable, version-controlled code. On the AWS Certified Database Specialty DBS-C01 exam, this question tests your understanding of infrastructure as code (IaC) principles and the distinction between provisioning services like CloudFormation versus management or configuration tools. A common trap is confusing CloudFormation with AWS Systems Manager or AWS Database Migration Service, which handle automation or migration but not declarative resource creation. Remember the key differentiator: if the task involves deploying and orchestrating multiple AWS resources together from a template, CloudFormation is the answer. Memory tip: think “CF = Code First” for your database infrastructure.
DBS-C01 Management and Operations Practice Question
This DBS-C01 practice question tests your understanding of management and operations. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A company wants to automate the creation of a new Amazon RDS for SQL Server instance with specific configurations, including VPC, subnet, and security group settings. Which AWS service should be used to deploy this infrastructure as code?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
AWS CloudFormation
AWS CloudFormation allows you to define infrastructure as code and automate resource creation.
Key principle: Count usable hosts — not total addresses — and remember that the network and broadcast addresses are not available to hosts in standard IPv4 subnets.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
AWS CodeDeploy
Why it's wrong here
CodeDeploy is for deploying application code, not infrastructure.
✗
AWS Elastic Beanstalk
Why it's wrong here
Beanstalk is for application deployment, not directly for RDS instance creation with custom VPC.
✓
AWS CloudFormation
Why this is correct
CloudFormation templates can define RDS instances along with VPC, subnets, and security groups.
OpsWorks is configuration management, not infrastructure provisioning.
Common exam traps
Common exam trap: usable hosts are not the same as total addresses
Subnetting questions often tempt you into counting all addresses. In normal IPv4 subnets, the network and broadcast addresses are not usable host addresses.
Detailed technical explanation
How to think about this question
Subnetting questions test whether you can identify the network, broadcast address, usable range, mask and correct subnet. Slow down enough to calculate the block size correctly.
KKey Concepts to Remember
CIDR notation defines the prefix length.
Block size helps identify subnet boundaries.
Network and broadcast addresses are not usable hosts in normal IPv4 subnets.
The required host count determines the smallest suitable subnet.
TExam Day Tips
→Write the block size before choosing the subnet.
→Check whether the question asks for hosts, subnets or a specific address range.
→Do not confuse /24, /25, /26 and /27 host counts.
Key takeaway
Count usable hosts — not total addresses — and remember that the network and broadcast addresses are not available to hosts in standard IPv4 subnets.
Real-world example
How this comes up in practice
A healthcare organisation deploys an application with a public-facing web tier and a private database tier. The database subnet has no public IP and only accepts connections from the web tier's security group. Questions like this test whether you can design cloud network isolation using VNets/VPCs, subnets, and security group rules.
What to study next
Got this wrong? Here's your next step.
Review block sizes, usable host formulas (2^n − 2), and how to find network and broadcast addresses for /24 through /30. Then practise related DBS-C01 subnetting questions on CIDR, address ranges, and subnet selection.
Management and Operations — This question tests Management and Operations — CIDR notation defines the prefix length..
What is the correct answer to this question?
The correct answer is: AWS CloudFormation — AWS CloudFormation allows you to define infrastructure as code and automate resource creation.
What should I do if I get this DBS-C01 question wrong?
Review block sizes, usable host formulas (2^n − 2), and how to find network and broadcast addresses for /24 through /30. Then practise related DBS-C01 subnetting questions on CIDR, address ranges, and subnet selection.
What is the key concept behind this question?
CIDR notation defines the prefix length.
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Question Discussion
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