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.
Which THREE actions should a developer take to secure an AWS Lambda function that processes sensitive data? (Choose 3.)
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Store configuration values in Lambda environment variables.
A, C, and E are correct. Using environment variables for configuration (A) avoids hardcoding secrets. Encrypting environment variables with KMS (C) protects them at rest. Using a VPC (E) isolates the function. Option B (IAM roles) is already required for permissions, not an additional action. Option D (CloudTrail) is for auditing, not direct security of the function.
Key principle: Authentication proves identity; authorization controls what that identity can do after login. Both must work for full privileged access.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✓
Store configuration values in Lambda environment variables.
Why this is correct
Environment variables avoid hardcoding secrets in code.
Related concept
Authentication checks who the user is.
✗
Attach an IAM role with least privilege permissions.
Why it's wrong here
This is a standard practice, but the question asks for actions specifically for sensitive data processing.
✓
Enable encryption of environment variables using AWS KMS.
Why this is correct
KMS encryption protects environment variable values at rest.
Related concept
Authentication checks who the user is.
✓
Run the Lambda function inside a VPC.
Why this is correct
VPC provides network isolation for sensitive data processing.
Related concept
Authentication checks who the user is.
✗
Enable AWS CloudTrail for the Lambda function.
Why it's wrong here
CloudTrail logs API calls but does not directly secure the function.
Common exam traps
Common exam trap: authentication is not authorization
Logging in proves the user can authenticate. It does not automatically mean the user is allowed to enter privileged or configuration mode. Watch for AAA authorization, privilege level and command authorization details.
Detailed technical explanation
How to think about this question
This kind of question is testing the difference between identity and permission. A user may successfully log in to a router because authentication is working, but still fail to enter configuration mode because authorization is missing, misconfigured or mapped to a lower privilege level.
KKey Concepts to Remember
Authentication checks who the user is.
Authorization controls what the user is allowed to do after login.
Privilege levels affect access to EXEC and configuration commands.
AAA, TACACS+ and RADIUS can separate login success from command access.
TExam Day Tips
→Do not assume successful login means full administrative access.
→Look for words such as cannot enter configuration mode, privilege level, authorization or command access.
→Separate login problems from permission problems before choosing the answer.
Key takeaway
Authentication proves identity; authorization controls what that identity can do after login. Both must work for full privileged access.
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 Cisco AAA concepts — authentication, authorization, and accounting. Study privilege levels (0–15), command authorization under TACACS+, and how RADIUS differs. Then practise related DVA-C02 questions on access control and AAA configuration.
Development with AWS Services — This question tests Development with AWS Services — Authentication checks who the user is..
What is the correct answer to this question?
The correct answer is: Store configuration values in Lambda environment variables. — A, C, and E are correct. Using environment variables for configuration (A) avoids hardcoding secrets. Encrypting environment variables with KMS (C) protects them at rest. Using a VPC (E) isolates the function. Option B (IAM roles) is already required for permissions, not an additional action. Option D (CloudTrail) is for auditing, not direct security of the function.
What should I do if I get this DVA-C02 question wrong?
Review Cisco AAA concepts — authentication, authorization, and accounting. Study privilege levels (0–15), command authorization under TACACS+, and how RADIUS differs. Then practise related DVA-C02 questions on access control and AAA configuration.
What is the key concept behind this question?
Authentication checks who the user is.
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Question Discussion
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