The payload is encapsulated within the packet's header and trailer, which contain control and addressing information. For example, if we are sending an image file over a network, the payload would consist of the binary data representing the pixels of the image. The header of the packet would contain information such as source and destination addresses, protocol information needed for the proper routing and delivery of the packet. The trailer might include error-checking information to ensure the integrity of the transmitted data.
In summary, the payload is the essential data being transported by the network, while the header and trailer provide the necessary control and addressing information for the packet to reach its destination and be properly processed.
