Practice set
AWS Certified Developer Associate DVA-C02 questions
Question 1hardmulti select
Full question →A Lambda function behind API Gateway intermittently times out only during cold starts. Which two actions can reduce cold-start impact?
Question 2hardmultiple choice
Full question →Messages in an SQS queue are processed successfully but later reappear and are processed again. What is the most likely configuration issue?
Question 3mediummultiple choice
Full question →A developer is building a RESTful API using Amazon API Gateway and AWS Lambda. The API needs to support custom domain names with SSL/TLS certificates. The developer has created the custom domain name in API Gateway and uploaded the certificate to AWS Certificate Manager (ACM) in the same region. However, when accessing the custom domain, users get an SSL error. What is the most likely cause?
Question 4mediummultiple choice
Full question →A developer is building a serverless application using AWS Lambda and Amazon DynamoDB. The application needs to store large JSON documents (up to 1 MB) and retrieve them by a primary key. The documents are updated frequently. Which DynamoDB feature should the developer consider to optimize performance and cost for storing and retrieving these large items?
Question 5mediummultiple choice
Full question →A developer configures an AWS Lambda function to process image files uploaded to an S3 bucket. The bucket receives a mix of .jpg, .png, and .pdf files. To reduce costs, the developer wants the Lambda function to be invoked only for image files (.jpg and .png). How should the developer configure the S3 event notification?
Question 6hardmultiple choice
Full question →A Lambda function in a VPC must retrieve secrets from Secrets Manager without traversing the public internet. Which configuration should be used?
Question 7mediummultiple choice
Full question →A Lambda function must retrieve feature flags at runtime with low latency and controlled rollout. Which AWS service is most appropriate?
Question 8mediummultiple choice
Full question →A Lambda function must share reusable validation code across several functions without packaging the same library into every deployment artifact. What should be used?
Question 9mediummultiple choice
Full question →A Lambda function needs temporary scratch space larger than the default while processing images. Which setting should be adjusted?
Question 10mediummulti select
Full question →A Lambda function needs to decrypt data encrypted with a customer managed KMS key. Which two permissions are commonly required?
Question 11hardmulti select
Full question →A Lambda function processes a batch of SQS messages. Which two configurations reduce duplicate or failed-message impact?
Question 12hardmulti select
Full question →A Lambda function processes messages from an SQS standard queue and writes results to DynamoDB. Duplicate writes occasionally occur after retries. Which two changes best make the processing idempotent?
Question 13hardmulti select
Full question →A Lambda function reading from Kinesis is falling behind. Which two metrics/settings should be reviewed first?
Question 14mediummultiple choice
Full question →A Lambda function receives events from EventBridge. The developer wants failed invocations to be retried and then stored for later analysis if retries are exhausted. Which configuration should be used?
Question 15hardmultiple choice
Full question →A Lambda function using a Kinesis event source repeatedly retries one bad record and blocks progress in the shard. Which feature helps isolate failed records after retry limits?
Question 16hardmulti select
Full question →A Lambda function writes order records to DynamoDB after receiving API Gateway requests. Which two practices improve reliability during client retries?
Question 17mediummultiple choice
Full question →A mobile application must let authenticated users upload only to their own S3 prefix. Which approach best follows least privilege?
Question 18mediummultiple choice
Full question →A REST API requires request validation before invoking Lambda to reduce unnecessary function executions for malformed payloads. Where should validation be configured?
Question 19mediummulti select
Full question →A SAM application should gradually shift Lambda traffic and roll back on errors. Which two pieces are needed?
Question 20mediummultiple choice
Full question →A service needs loosely coupled asynchronous communication where one producer sends events to many different AWS service targets using rules. Which service fits best?
Question 21hardmultiple choice
Full question →A service publishes order events to SNS. Several consumers need different filtered subsets of events without changing publisher code. What should the developer configure?
Question 22hardmultiple choice
Full question →A Step Functions workflow calls three independent Lambda functions and should continue only after all results are available. Which state pattern should be used?
Question 23hardmultiple choice
Full question →A team wants CloudFormation to prevent accidental deletion of a production DynamoDB table during stack updates. What should they configure?
Question 24mediummulti select
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