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A logistics company exposes a Regional Amazon API Gateway REST API (GET /shipments/{trackingId}) that invokes an AWS Lambda function using Lambda proxy integration; on 2024-11-03 at 14:25:33 UTC, a developer runs curl -i https://api.company.example/prod/shipments/42 and receives HTTP 502, API Gateway execution logs show 'Method completed with status: 502', and the Lambda’s CloudWatch Logs indicate the handler completed successfully and returned the plain string 'OK' (2 bytes) with no stack trace; to resolve the error and have the API return 200, what should the developer change?
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점수는 793점으로 합격했어요! 하루에 최소 30문제는 풀었어요. 밖에서도 짬 날 때마다 풀 수 있으니 좋네요ㅎㅎ
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앱 문제가 시험이랑 굉장히 유사했어요. 그리고 해설들이 왜 틀렸는지 이해하는데 도움이 됐어요.
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Thank you very much, these questions are wonderful !!!
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1달 전에 합격했는데 지금 후기쓰네요. 시험하고 문제 구성이 비슷했어요
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I just passed the exam, and I can confidently say that this app was instrumental in helping me thoroughly review the exam material.
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A team adds OpenCV and SciPy to an existing AWS Lambda function that resizes images; after the update, the unzipped .zip deployment package is 420 MB, exceeding the 250 MB quota for .zip-based Lambda packages, and the function uses the x86_64 instruction set architecture that must remain unchanged. The developer must deploy the function with the new dependencies without altering its business logic—Which solution will meet these requirements?
A fintech team uses AWS CloudFormation to deploy an EventBridge-triggered AWS Lambda function whose code is a zipped artifact stored in Amazon S3 (bucket artifacts-567890-us-east-1 with versioning enabled, key builds/processor.zip, last version ID 3Lg8xZ2), but every time they run a stack update while keeping the same S3 object key, the Lambda function code does not change; what should they do to ensure CloudFormation applies the new code during updates?
A fintech startup operates 340 AWS Lambda functions in us-west-2 that must be tested via Lambda function URLs, and the internal verification team grouped in an IAM group named QA-Reviewers needs to invoke all endpoints using the public URLs while blocking anonymous access, so as the developer, how should you configure authentication and permissions at scale to meet these requirements?
A small team is prototyping an event-driven photo-tagging service on AWS using 10 AWS Lambda functions, Amazon API Gateway, and a single Amazon DynamoDB table, and they need an accelerated inner-loop workflow that can push code-only changes for one Lambda function to a dev stack within 20 seconds for QA testing without performing a full stack redeploy on every commit. The team wants to keep AWS CloudFormation as the deployment backbone and use one CLI command from their workstation to incrementally sync updated code and minor template changes (such as environment variables) to the cloud. What should the team do to meet these requirements?
A fitness startup runs a daily step-count challenge on AWS; participant submissions are written to an Amazon DynamoDB table, aggregate winners are announced at 09:00 UTC the next day, and thereafter the raw submissions are no longer needed; a developer has added an expires_on attribute (Unix epoch time in seconds set to submission_time + 86,400) to each item and wants the old submissions to be removed automatically with the least development effort; which solution meets these requirements?
A sports streaming startup places Amazon CloudFront in front of an S3 origin to deliver HLS segments and static assets. A developer needs a dashboard that visualizes 4xx/5xx error rates and anomalies for each edge location with near-real-time updates (≤2 seconds delay). Which combination of steps will meet these requirements? (Choose two.)
A developer at Company X must publish messages to an Amazon SQS queue in a partner AWS account (account ID 444455556666) by assuming the cross-account role arn:aws:iam::444455556666:role/SQSWriter, and the company mandates multi-factor authentication (MFA) using the virtual device arn:aws:iam::111122223333:mfa/dev1 with a 6-digit token and a 60-minute session duration; which AWS Security Token Service (AWS STS) API operation should the developer call with the MFA parameters to obtain temporary credentials for this access?
A developer is authoring an AWS CloudFormation template for an internal API service in us-east-1 that must attach to an existing interface VPC endpoint (service name com.amazonaws.us-east-1.ssm) created by a separate CloudFormation stack named network-core, but on the first launch the application stack fails because it attempts to reference the endpoint ID from the other stack; which template coding mistakes could have caused this failure? (Choose two.)
A developer is building an AWS Step Functions state machine to orchestrate a subscription activation workflow for a video streaming platform. When a new subscription request arrives, the state machine must pause until the external billing system confirms payment. The billing system, upon successful charge, writes a confirmation item with partition key subscriptionId into an Amazon DynamoDB table named BillingConfirmations. The developer must complete the workflow so it resumes only after the matching confirmation item exists, while minimizing idle compute and avoiding long-running functions. Which solution will meet this requirement?