AWS Certified Developer Associate Practice Exam 2025 – Complete Study Guide

When you successfully upload a file to Amazon S3, the expected HTTP response code is 200. This status code signifies that the request has been fulfilled successfully. In the context of an S3 upload, it indicates that the file has been received, processed, and stored as intended.

In more detail, a 200 status code means that the server has appropriately handled the HTTP request, which, in this case, is the PUT operation for uploading the file. When the upload is complete and there are no errors, the service responds with a 200 OK status, confirming the operation was successful.

Using other status codes in this context would indicate different scenarios. For instance, a 400 code would suggest a bad request, meaning there was an error in the client's request format or parameters. A 301 status indicates that the requested resource has been permanently moved to a different URL, which would not apply to a direct upload operation. Lastly, a 404 code signifies that the requested resource could not be found, which is unrelated to the successful upload of a file to S3.