What is the format in which data is sent over transmission media?

Data sent over transmission media is typically formatted into packets or frames, which encapsulate the information along with necessary control and addressing information. This allows for efficient routing and error-checking during transmission. The actual format can vary depending on the protocol used, such as TCP/IP for internet communications or Ethernet for local networks. Additionally, data can be transmitted in various forms such as analog signals, digital signals, or as a series of bits.