- A
Disable TLS for the database connection
Why wrong: TLS should be enforced for encrypting data in transit.
- B
Configure VPC integration for the Lambda function
VPC integration allows Lambda to access resources in a VPC.
- C
Attach an Internet Gateway to the Lambda function
Why wrong: Internet Gateway is not needed; Lambda should use VPC integration.
- D
Assign a public IP address to the Lambda function
Why wrong: Lambda functions do not have public IPs; VPC integration uses ENIs.
- E
Create an execution role with permissions to the RDS database
The execution role grants the function the necessary database access.
Question 402 of 1,000
easyMultiple SelectObjective-mapped
CCSP Practice Question: Deploying a serverless function in AWS Lambda…
This CCSP practice question tests your understanding of ccsp exam topics. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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 deploying a serverless function in AWS Lambda that needs to access a private RDS database. Which TWO configurations are necessary for secure access?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Configure VPC integration for the Lambda function
Option B is correct because Lambda functions must be attached to a VPC using VPC integration to access resources inside a private subnet, such as an RDS database. Without VPC integration, the Lambda function runs in an AWS-managed VPC and cannot reach resources in the customer’s VPC. This configuration requires the Lambda function to be associated with the same VPC, subnets, and security groups as the RDS instance.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Disable TLS for the database connection
Why it's wrong here
TLS should be enforced for encrypting data in transit.
- ✓
Configure VPC integration for the Lambda function
Why this is correct
VPC integration allows Lambda to access resources in a VPC.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Attach an Internet Gateway to the Lambda function
Why it's wrong here
Internet Gateway is not needed; Lambda should use VPC integration.
- ✗
Assign a public IP address to the Lambda function
Why it's wrong here
Lambda functions do not have public IPs; VPC integration uses ENIs.
- ✓
Create an execution role with permissions to the RDS database
Why this is correct
The execution role grants the function the necessary database access.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The CCSP exam often tests the misconception that Lambda functions can directly access private resources without VPC integration, or that public IPs or Internet Gateways are needed for private connectivity, leading candidates to select options like C or D instead of recognizing the necessity of VPC integration and proper IAM roles.
Detailed technical explanation
How to think about this question
When you enable VPC integration for a Lambda function, AWS creates an Elastic Network Interface (ENI) in your specified subnets, which allows the function to communicate with RDS using private IP addresses within the VPC. The Lambda execution role must include permissions for ec2:CreateNetworkInterface and related actions to manage these ENIs, and the RDS security group must allow inbound traffic from the Lambda function’s security group on the database port (e.g., 3306 for MySQL, 5432 for PostgreSQL). A common real-world scenario is when Lambda functions need to query RDS for user authentication or transaction processing, and misconfiguring security group rules or IAM permissions leads to timeout errors.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
TExam Day Tips
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A developer is choosing between AES-256 (symmetric) and RSA-2048 (asymmetric) for encrypting a large file that will be sent to a partner. Symmetric encryption is fast but requires key exchange; asymmetric is slower but solves the key distribution problem. A hybrid approach — encrypt the file with AES, encrypt the AES key with RSA — is standard. Questions like this test whether you understand when each approach applies.
Visual reference
Quick reference
Cloud Service Model Comparison
| Model | You Manage | Provider Manages | Examples |
|---|---|---|---|
| IaaS | OS, runtime, apps, data | Hardware, hypervisor, networking | EC2, Azure VMs, GCP Compute Engine |
| PaaS | Apps and data | OS, runtime, middleware, hardware | Elastic Beanstalk, Azure App Service |
| SaaS | Data and settings only | Everything else | Microsoft 365, Salesforce, Workday |
| FaaS / Serverless | Function code only | Infra, scaling, runtime | Lambda, Azure Functions, Cloud Run |
| CaaS | Containers and apps | Kubernetes, OS, hardware | EKS, AKS, GKE |
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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FAQ
Questions learners often ask
What does this CCSP question test?
Read the scenario before looking for a memorised answer.
What is the correct answer to this question?
The correct answer is: Configure VPC integration for the Lambda function — Option B is correct because Lambda functions must be attached to a VPC using VPC integration to access resources inside a private subnet, such as an RDS database. Without VPC integration, the Lambda function runs in an AWS-managed VPC and cannot reach resources in the customer’s VPC. This configuration requires the Lambda function to be associated with the same VPC, subnets, and security groups as the RDS instance.
What should I do if I get this CCSP question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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 →
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Last reviewed: Jul 4, 2026
This CCSP practice question is part of Courseiva's free ISC2 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 CCSP exam.
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