Understanding the Internet and Its Components The Internet is a vast global network connecting millions of computers across countries, enabling information sharing, entertainment, and communication. At its core are end systems or hosts like personal devices (computers, smartphones) located at the edge of this network. These connect through routers and link-layer switches via communication links to form networks that interconnect into what we call the "Internet." The connection between these networks is facilitated by ISPs (Internet Service Providers), creating an interconnected web known as a "network of networks." Distributed applications on devices use this infrastructure for data exchange while protocols ensure standardized communication.
How Data Travels Through Protocols in the Internet Data sent over the internet is divided into packets which travel from one system to another before being reassembled at their destination. Applications handle converting these packets back into usable formats such as text or video; however, packet delivery itself relies solely on internet mechanisms. Communication standards called protocols—like TCP/IP or HTTP—govern how data moves efficiently across different systems within this massive structure. These rules are established by IETF under documents named RFCs ensuring seamless interaction among diverse technologies globally.