S5:E2 Internet Communication: Networks and Web Technologies
Update: 2025-10-27
Description
This episode provides a comprehensive overview of internet communication and network technologies. It begins by detailing the fundamental concepts of circuit switching versus packet switching, emphasising why the latter is crucial for the internet's interconnectedness. The source then explains how data is broken into "packets," describing their structure, including headers and trailers for addressing, reassembly, and error checking. Finally, it highlights the critical role of protocols and standards, particularly the TCP/IP stack with its four layers (Application, Transport, Internet, Link), and discusses various protocols like FTP, SMTP, POP3, and IMAP for specific network services such as file transfer and email.
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