retourcijfers

Retourcijfers, also known as return codes or response codes, are numerical codes used in computing and telecommunications to indicate the status of a request or operation. They are widely used in protocols such as HTTP (Hypertext Transfer Protocol) and SMTP (Simple Mail Transfer Protocol). In HTTP, for example, a retourcijfer of 200 typically indicates a successful request, while a 404 indicates that the requested resource could not be found. These codes help in troubleshooting, debugging, and understanding the flow of data between systems. They are standardized to ensure consistency and interoperability across different platforms and applications.