Internet protocols such as TCP/IP and HTTP are essential for supporting data transmission over networks. They define how data packets are created, sent, and received across the internet, ensuring reliable and efficient communication. TCP (Transmission Control Protocol) manages the integrity of data transmission by establishing connections and confirming data delivery, while IP (Internet Protocol) handles the addressing and routing of data packets to the correct destination. Together, these protocols enable seamless interaction between different devices and applications, underpinning web browsing, streaming, and online services.