DVA-C02 Development with AWS Services Practice Question
This DVA-C02 practice question tests your understanding of development with aws services. 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 is using AWS CodePipeline to automate their CI/CD pipeline. The pipeline includes a stage that runs a set of integration tests using AWS CodeBuild. The tests require access to a database running on a private subnet in a VPC. The CodeBuild project is configured to use a managed compute image. How can the CodeBuild project access the database?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Configure the CodeBuild project to use a custom VPC with the appropriate subnet and security group.
Option B is correct because by setting the CodeBuild project to use a custom VPC, it can be configured with a subnet and security group that allow access to the private database. Option A is wrong because a NATgateway would require the CodeBuild project to be in a public subnet, not private. Option C is wrong because VPC peering is unnecessary; CodeBuild can be launched directly in the VPC. Option D is wrong because a VPC endpoint is for accessing AWS services privately, not for general network access.
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.
✗
Place the CodeBuild project in a public subnet and use a NAT gateway to route traffic to the private subnet.
Why it's wrong here
This would not allow direct access to a private subnet; NAT is for outbound traffic.
✓
Configure the CodeBuild project to use a custom VPC with the appropriate subnet and security group.
Why this is correct
CodeBuild supports launching in a VPC, allowing access to resources in that VPC.
Set up a VPC peering connection between the CodeBuild VPC and the database VPC.
Why it's wrong here
CodeBuild does not have its own VPC; it runs in a managed environment unless custom VPC is configured.
✗
Create a VPC endpoint for the database service and attach it to the CodeBuild project.
Why it's wrong here
VPC endpoints are for AWS services like S3, not for RDS databases.
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 company's IT admin needs to give a contractor read-only access to production logs without sharing account credentials. Using role-based access control (RBAC) and temporary scoped permissions — not a permanent shared password — is the correct pattern. Questions like this test whether you can apply least-privilege access across cloud identity services.
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 DVA-C02 subnetting questions on CIDR, address ranges, and subnet selection.
Development with AWS Services — This question tests Development with AWS Services — CIDR notation defines the prefix length..
What is the correct answer to this question?
The correct answer is: Configure the CodeBuild project to use a custom VPC with the appropriate subnet and security group. — Option B is correct because by setting the CodeBuild project to use a custom VPC, it can be configured with a subnet and security group that allow access to the private database. Option A is wrong because a NAT gateway would require the CodeBuild project to be in a public subnet, not private. Option C is wrong because VPC peering is unnecessary; CodeBuild can be launched directly in the VPC. Option D is wrong because a VPC endpoint is for accessing AWS services privately, not for general network access.
What should I do if I get this DVA-C02 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 DVA-C02 subnetting questions on CIDR, address ranges, and subnet selection.
What is the key concept behind this question?
CIDR notation defines the prefix length.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
This DVA-C02 practice question is part of Courseiva's free Amazon Web Services certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the DVA-C02 exam.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.