DVA-C02 — Most Debated Topics

Community-voted ranking of 161 topics, sorted by disagreement level. Higher dispute = more test-takers disagree on the answer.

#1
How to Log Every Lambda Invocation to an SQS Queue?
S-Grade Dispute: 56% 7 comments
#2
How to Test Updated Lambda Functions with a Subset of Users Using API Gateway?
S-Grade Dispute: 50% 19 comments
#3
How to automate S3 object tagging after delayed third-party content audit?
S-Grade Dispute: 45% 15 comments
#4
How to securely hide an API key when calling a third-party HTTP API from a browser SPA?
S-Grade Dispute: 43% 7 comments
#5
How to automatically rotate encryption keys for API keys in serverless apps with no development effort?
S-Grade Dispute: 43% 6 comments
#6
How to Prevent CloudFormation from Resetting SSM Parameter Store Values on Stack Update?
S-Grade Dispute: 42% 12 comments
#7
How to configure AWS X-Ray sampling rules for serverless applications?
S-Grade Dispute: 42% 5 comments
#8
How Does IAM Explicit Deny Affect EC2 Instance S3 Access?
S-Grade Dispute: 40% 5 comments
#9
How to deploy AWS Lambda with large dependencies?
A-Grade Dispute: 40% 3 comments
#10
Which Two Commands Deploy an Existing AWS SAM Template?
A-Grade Dispute: 40% 3 comments
#11
How to Notify Before an Imported ACM Certificate Expires?
A-Grade Dispute: 40% 3 comments
#12
How to Encrypt a Large PDF File Using AWS KMS GenerateDataKey?
S-Grade Dispute: 39% 11 comments
#13
How to configure RDS for MySQL access without long-term credentials?
S-Grade Dispute: 36% 8 comments
#14
How to enable cross-account EC2 access to a Kinesis data stream?
S-Grade Dispute: 35% 8 comments
#15
How to notify the QA team on new AWS CloudFormation deployments in a specific environment?
S-Grade Dispute: 33% 6 comments
#16
How to Create an Automated CI/CD Pipeline with AWS Copilot and CodeCommit?
S-Grade Dispute: 33% 8 comments
#17
How to configure credential caching for WebSocket APIs?
A-Grade Dispute: 33% 4 comments
#18
How to Update Lambda Code in CloudFormation When the S3 Zip Changes?
A-Grade Dispute: 33% 3 comments
#19
How to perform a canary release for an AWS Lambda function behind API Gateway?
S-Grade Dispute: 31% 7 comments
#20
How to rotate RDS credentials with zero downtime using AWS Secrets Manager?
S-Grade Dispute: 31% 10 comments
#21
How to find slow Lambda executions across all functions?
S-Grade Dispute: 30% 8 comments
#22
How to Notify the Security Team 90 Days Before an Imported ACM Certificate Expires?
S-Grade Dispute: 29% 4 comments
#23
How to Resolve Duplicate SQS Message Processing in Lambda Cost-Effectively?
S-Grade Dispute: 27% 7 comments
#24
How to Enable Directory Index Access in CloudFront with Private S3 Origin?
S-Grade Dispute: 27% 9 comments
#25
How to use a 15 GB ML library across multiple AWS Lambda functions?
S-Grade Dispute: 25% 9 comments
#26
How to encrypt Lambda environment variables using AWS KMS?
S-Grade Dispute: 25% 6 comments
#27
How to transfer expired DynamoDB items to S3 with least operational overhead?
S-Grade Dispute: 25% 7 comments
#28
How to Dynamically Deploy ECS Application Parameters Without Downtime Using AWS AppConfig?
S-Grade Dispute: 25% 5 comments
#29
How to scale a Kinesis data stream for peak traffic most cost-effectively?
A-Grade Dispute: 25% 3 comments
#30
How to optimize Lambda RDS connection performance?
A-Grade Dispute: 25% 3 comments
#31
How to notify failed DynamoDB sales above a price threshold with least effort?
S-Grade Dispute: 23% 7 comments
#32
How to Roll Back an AWS Lambda Function with Minimal User Impact?
S-Grade Dispute: 20% 10 comments
#33
Which Elastic Beanstalk deployment policy minimizes impact and maximizes availability?
A-Grade Dispute: 20% 3 comments
#34
Which S3 encryption type prevents third-party access to uploaded documents?
A-Grade Dispute: 20% 4 comments
#35
How to query DynamoDB with same partition key and different sort key?
S-Grade Dispute: 18% 5 comments
#36
How to find the source of increased response time in a Lambda function integrated with API Gateway?
S-Grade Dispute: 17% 6 comments
#37
How to Efficiently Filter DynamoDB Records by Non-Key Attribute?
A-Grade Dispute: 17% 3 comments
#38
Which AWS KMS Key Type Supports Immediate Deletion?
A-Grade Dispute: 17% 4 comments
#39
How to Configure a Staging Environment for AWS Lambda Using Weighted Aliases?
A-Grade Dispute: 17% 3 comments
#40
How to enable cross-account DynamoDB access from EC2?
S-Grade Dispute: 15% 5 comments
#41
How to restrict direct S3 access to CloudFront only?
S-Grade Dispute: 14% 7 comments
#42
How to resolve AccessDeniedException when Lambda pushes events to EventBridge?
S-Grade Dispute: 14% 6 comments
#43
How to measure custom Lambda throughput excluding initialization in CloudWatch?
S-Grade Dispute: 14% 7 comments
#44
How to schedule a daily Lambda invocation cost-effectively?
S-Grade Dispute: 14% 6 comments
#45
How to Test AWS Lambda Locally with S3 Events Using SAM CLI?
S-Grade Dispute: 14% 5 comments
#46
How to Securely Store Encrypted Credentials for AWS Lambda?
S-Grade Dispute: 14% 7 comments
#47
How to securely allow authenticated users to download S3 objects from an EC2-hosted application?
S-Grade Dispute: 13% 7 comments
#48
How to limit Lambda concurrency from an SQS queue?
S-Grade Dispute: 12% 8 comments
#49
Which Partition Key Optimizes DynamoDB Performance for a Pet Store Rewards App?
A-Grade Dispute: 12% 4 comments
#50
What is the most cost-effective way to store video files for SQS-based processing?
A-Grade Dispute: 12% 4 comments
#51
How to prevent S3 event notifications from invoking the wrong Lambda function?
S-Grade Dispute: 11% 6 comments
#52
How to optimize CodeBuild performance with caching?
A-Grade Dispute: 10% 4 comments
#53
How to reference a plaintext SSM Parameter Store value in CloudFormation?
S-Grade Dispute: 9% 7 comments
#54
How to reference API Gateway endpoint in Step Functions via CloudFormation?
S-Grade Dispute: 8% 8 comments
#55
How to Isolate SAM Deployments to Avoid Impacting Pre-Production?
S-Grade Dispute: 8% 6 comments
#56
How to Mock Third-Party API Integrations in AWS API Gateway?
S-Grade Dispute: 8% 7 comments
#57
Which DynamoDB attribute should be used as a partition key for well-distributed records?
S-Grade Dispute: 7% 7 comments
#58
How to Avoid Third-Party Rate-Limiting Errors in AWS Lambda?
A-Grade Dispute: 7% 4 comments
#59
How to Prevent AWS Lambda Timeouts on SQS Event Sources?
S-Grade Dispute: 6% 5 comments
#60
How to Deploy ACM SSL Certificates to ALBs Across Multiple AWS Regions?
S-Grade Dispute: 6% 7 comments
#61
How to Configure API Gateway Stage-Specific Third-Party Endpoints?
A-Grade Dispute: 0% 4 comments
#62
How to deploy incremental changes in AWS serverless applications?
A-Grade Dispute: 0% 5 comments
#63
How to Mock API Gateway Endpoints for Frontend Development?
A-Grade Dispute: 0% 4 comments
#64
Why does an EKS application not connect to new backend resources after migration?
A-Grade Dispute: 0% 3 comments
#65
How to securely grant EC2 instances least-privilege access to multiple S3 buckets?
A-Grade Dispute: 0% 3 comments
#66
How to securely store and auto-rotate RDS credentials on EC2?
A-Grade Dispute: 0% 5 comments
#67
How to manage Amazon RDS database users consistently across multiple AWS accounts?
A-Grade Dispute: 0% 3 comments
#68
How to Mock API Gateway Responses Without a Backend?
A-Grade Dispute: 0% 3 comments
#69
How to prevent out-of-order updates with Amazon SQS FIFO queues?
A-Grade Dispute: 0% 4 comments
#70
How to encrypt EBS volumes for EC2 without impacting performance?
A-Grade Dispute: 0% 3 comments
#71
How to Implement Weighted Traffic Routing for AWS Lambda Versions?
A-Grade Dispute: 0% 4 comments
#72
How to enable frontend development while backend API is not ready using API Gateway?
A-Grade Dispute: 0% 5 comments
#73
How to Deploy Containerized Applications on AWS with Least Operational Effort?
A-Grade Dispute: 0% 7 comments
#74
How to automate DynamoDB item expiration and archival with minimal code?
A-Grade Dispute: 0% 5 comments
#75
How to implement user sign-in for a serverless application with minimal operational overhead?
A-Grade Dispute: 0% 5 comments
#76
How to speed up AWS Lambda deployment for large dependencies?
A-Grade Dispute: 0% 6 comments
#77
Which HTTP Error Should API Gateway Return for Invalid Login Credentials?
A-Grade Dispute: 0% 4 comments
#78
Which STS API Supports MFA for Cross-Account S3 Access?
A-Grade Dispute: 0% 6 comments
#79
How to Securely Grant EC2 Access to S3?
A-Grade Dispute: 0% 3 comments
#80
How to Retry a Lambda Task Once in Step Functions and Stop on Other Errors?
A-Grade Dispute: 0% 4 comments
#81
How to Pass a CloudFormation Log Group Name to an AWS Lambda Function?
A-Grade Dispute: 0% 6 comments
#82
How to Create a DynamoDB Table with an AWS-Owned Encryption Key?
A-Grade Dispute: 0% 6 comments
#83
How to Implement Cross-Region Distributed Tracing with AWS X-Ray?
A-Grade Dispute: 0% 4 comments
#84
How to Prioritize SQS Queues for Lambda with Max Concurrency?
A-Grade Dispute: 0% 6 comments
#85
How to Encrypt and Automatically Rotate Sensitive AWS Credentials per Environment?
A-Grade Dispute: 0% 6 comments
#86
Why Are Duplicate Email Messages Sent During High Traffic with SQS, Lambda, and SES?
A-Grade Dispute: 0% 4 comments
#87
Which S3 Storage Class Meets Minute Retrieval and 7-Year Retention Cost-Effectively?
A-Grade Dispute: 0% 5 comments
#88
How to Cache Dynamic RDS Data for Low-Latency Reads?
A-Grade Dispute: 0% 10 comments
#89
How to Trace Multi-Service Lambda Performance Without Code Changes?
A-Grade Dispute: 0% 5 comments
#90
Migrating Kubernetes Workloads and NFS Storage to AWS
A-Grade Dispute: 0% 5 comments
#91
How to Route Asynchronous Lambda Invocation Errors?
A-Grade Dispute: 0% 5 comments
#92
Which AWS Service Manages Feature Flags with Safe Deployment?
A-Grade Dispute: 0% 4 comments
#93
How to Implement Manual Approval in AWS CodePipeline?
A-Grade Dispute: 0% 4 comments
#94
How to Automatically Retry Timeout Errors in AWS Step Functions?
A-Grade Dispute: 0% 6 comments
#95
Deploying Serverless Apps Across Multiple Environments with Minimal Effort?
A-Grade Dispute: 0% 4 comments
#96
Handling Failed Lambda Invocations with Minimal Overhead?
A-Grade Dispute: 0% 4 comments
#97
How to Immediately Alert on Non-CloudFormation IAM Role Creation?
A-Grade Dispute: 0% 5 comments
#98
How to Deploy AWS SAM Templates Using CloudFormation?
A-Grade Dispute: 0% 8 comments
#99
How to Capture Failed AWS Lambda Async Events?
A-Grade Dispute: 0% 5 comments
#100
How to Throttle Third-Party API Calls in Serverless Architecture?
A-Grade Dispute: 0% 4 comments
#101
How to Securely Store and Rotate Database Credentials on AWS?
A-Grade Dispute: 0% 6 comments
#102
How does DynamoDB TTL prevent throttling during data cleanup?
A-Grade Dispute: 0% 5 comments
#103
How to Run Hourly Batch Containers on ECS with Least Management?
A-Grade Dispute: 0% 6 comments
#104
How to Automatically Remove Old DynamoDB User Responses with Least Effort?
A-Grade Dispute: 0% 6 comments
#105
How to Reference an S3 Deployment Package for Lambda in CloudFormation?
A-Grade Dispute: 0% 4 comments
#106
How to Ensure All Services Appear in AWS X-Ray Service Map?
A-Grade Dispute: 0% 4 comments
#107
How to securely store and pass API keys to a containerized application on AWS?
A-Grade Dispute: 0% 5 comments
#108
How to Improve DynamoDB Query Performance for Non-Key Attributes?
A-Grade Dispute: 0% 6 comments
#109
Least Effort Way to Rotate AWS Secrets for EC2 Startup?
A-Grade Dispute: 0% 6 comments
#110
How to Expose Lambda PROD and DEV Aliases Through API Gateway Stages?
A-Grade Dispute: 0% 4 comments
#111
How should you store S3 objects to support high request rates?
A-Grade Dispute: 0% 3 comments
#112
How to get email notifications when ERROR appears in CloudWatch Logs?
A-Grade Dispute: 0% 4 comments
#113
How to Encrypt SQS Queue Data at Rest?
A-Grade Dispute: 0% 4 comments
#114
How to Start CodePipeline Build When a New Dependency JAR Is Available?
A-Grade Dispute: 0% 5 comments
#115
How to store failed Lambda asynchronous invocations with least overhead?
A-Grade Dispute: 0% 4 comments
#116
How to Preview Changes Before Updating a CloudFormation Stack
A-Grade Dispute: 0% 3 comments
#117
Which AWS Services Support Atomic Multi-Item Transactions?
A-Grade Dispute: 0% 3 comments
#118
Why Does AWS CLI Return Access Denied After SSO Configuration?
A-Grade Dispute: 0% 3 comments
#119
How to securely store an external API key in AWS Lambda with full KMS control?
A-Grade Dispute: 0% 5 comments
#120
How to Capture Client Public IP Addresses Behind an ALB?
A-Grade Dispute: 0% 3 comments
#121
What Is the Most Secure Way to Get Temporary Cross-Account Access in AWS?
A-Grade Dispute: 0% 3 comments
#122
How to Securely Grant EC2 Application Access to S3?
A-Grade Dispute: 0% 3 comments
#123
How to Secure Public Website with OIDC Authentication Without Code Changes?
A-Grade Dispute: 0% 6 comments
#124
How to Implement Selective Feature Activation in AWS Web Applications?
A-Grade Dispute: 0% 3 comments
#125
How to Reference Cross-Stack Resources in AWS CloudFormation?
A-Grade Dispute: 0% 5 comments
#126
How to Update EC2 IAM Role Permissions with Least Disruption?
A-Grade Dispute: 0% 3 comments
#127
How to Configure CloudFront for Encryption in Transit?
A-Grade Dispute: 0% 5 comments
#128
How to Encrypt an Existing CloudWatch Log Group with KMS?
A-Grade Dispute: 0% 4 comments
#129
How to Concurrently Invoke Independent Lambda Functions on an Event?
A-Grade Dispute: 0% 3 comments
#130
How to Support Alternative DynamoDB Access Patterns Efficiently?
A-Grade Dispute: 0% 3 comments
#131
How to filter SNS messages for Lambda with least effort?
A-Grade Dispute: 0% 5 comments
#132
How to ensure session persistence during EC2 failure?
A-Grade Dispute: 0% 3 comments
#133
How to enable AWS X-Ray tracing for EC2 microservices?
A-Grade Dispute: 0% 3 comments
#134
Optimizing Lambda performance using /tmp directory caching
A-Grade Dispute: 0% 4 comments
#135
How to fix API Gateway 403 errors for new API keys?
A-Grade Dispute: 0% 3 comments
#136
How to detect manual changes to CloudFormation stack resources?
A-Grade Dispute: 0% 3 comments
#137
How to resolve CloudFront serving outdated S3 content?
A-Grade Dispute: 0% 4 comments
#138
How to fix CloudFormation DELETE_FAILED for IAM Roles?
A-Grade Dispute: 0% 3 comments
#139
How to sort DynamoDB query results in descending order?
A-Grade Dispute: 0% 4 comments
#140
How to collect failed Lambda async events?
A-Grade Dispute: 0% 4 comments
#141
How to configure traffic shifting between Lambda versions?
A-Grade Dispute: 0% 3 comments
#142
How to search serverless logs with least operational overhead?
A-Grade Dispute: 0% 3 comments
#143
How to access AWS AppConfig data in Lambda with least effort?
A-Grade Dispute: 0% 4 comments
#144
How to provide Lambda access to shared data and libraries?
A-Grade Dispute: 0% 4 comments
#145
How to reprocess messages from an SQS dead-letter queue?
A-Grade Dispute: 0% 4 comments
#146
How to configure S3 read access in AWS SAM?
A-Grade Dispute: 0% 3 comments
#147
How to trigger AWS CodePipeline on source code changes?
A-Grade Dispute: 0% 4 comments
#148
How to Fix a 502 Bad Gateway Error from API Gateway and Lambda?
A-Grade Dispute: 0% 4 comments
#149
Which AWS Service Traces End-to-End Requests Across Microservices on EC2?
A-Grade Dispute: 0% 4 comments
#150
How Do You Get Notified When EC2 CPU Utilization Exceeds 80%?
A-Grade Dispute: 0% 3 comments
#151
Why Does API Gateway Return 403 When Lambda Sends a User ID to a Cognito Authorizer?
A-Grade Dispute: 0% 4 comments
#152
What Happens to an S3 Event When Lambda Times Out with Default Settings?
A-Grade Dispute: 0% 3 comments
#153
Which S3 Storage Classes Provide Instant Access Then 10-Minute Retrievals?
A-Grade Dispute: 0% 3 comments
#154
Why doesn't CloudFront show updated S3 files after a CodeBuild deployment?
A-Grade Dispute: 0% 3 comments
#155
How to Test CloudFormation Templates in Primary and DR Regions with CodePipeline?
A-Grade Dispute: 0% 3 comments
#156
How to Make a Lambda Production Alias Available Through API Gateway?
A-Grade Dispute: 0% 3 comments
#157
Which CI/CD solution provisions multi-account test infrastructure and runs integration tests?
A-Grade Dispute: 0% 3 comments
#158
How to configure a built-in JWT authorizer on an Amazon API Gateway HTTP API?
A-Grade Dispute: 0% 4 comments
#159
How to Orchestrate AWS Lambda Functions in Sequence with Least Operational Overhead?
A-Grade Dispute: 0% 3 comments
#160
How to Monitor SNS FIFO Topic Notification Rate and Latency with AWS X-Ray?
A-Grade Dispute: 0% 3 comments
#161
How to Implement Mobile App Authentication with Amazon Cognito User Pools?
A-Grade Dispute: 0% 3 comments

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