Description: A ‘header’ is a fundamental part of a data packet that contains metadata about the packet. In the context of programming, headers are used to transmit additional information that can be crucial for interpreting and handling the data being sent or received. This metadata can include details such as content type, packet length, source and destination addresses, and other parameters that facilitate communication between different systems or software components. In web development, headers are commonly used in handling HTTP requests and responses, where essential characteristics of web communication are defined. Proper implementation and handling of headers is vital to ensure that data is processed correctly and efficiently, allowing for smooth interaction between applications and services. Additionally, headers can be used for authentication, cache control, and session management, making them a versatile and essential tool in the development of web applications and API services.
