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What is the Protocol Stack Model (Open System Interconnection aka OSI) and what part is the web and internet?

User Bowheart
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Final answer:

The OSI model is a framework for understanding the layers of network communication, where the Web operates at the top layers and the Internet spans across all layers. The Web and Internet are interconnected through standardized protocols, allowing global scale communications and information sharing.

Step-by-step explanation:

The Open System Interconnection (OSI) model is a conceptual framework used to understand and implement the interactions between different networking protocols. It is divided into seven layers, each with specific responsibilities. The Web primarily operates at the top three layers of the OSI model, which are the application, presentation, and session layers, while the Internet itself encompasses the entire OSI model, with an essential part being the network layer where the Internet Protocol (IP) operates.

In the context of the OSI model, the World Wide Web uses protocols like HTTP (Hypertext Transfer Protocol) that function at the application layer to serve web pages. Other technologies vital to the Web's operation include HTML (Hypertext Markup Language) for page structure and content, and URI/URL (Uniform Resource Identifier) for locating resources on the Internet.

The development of the Internet from projects like ARPANET and concepts like Licklider's 'Intergalactic Computer Network' has evolved into a vast network of interconnected devices across the world. The standardization of protocols allowed for the global scale communication, and technologies such as HTML, URL, and HTTP were developed by Tim Berners-Lee, laying the foundation for the Web on the existing infrastructure of the Internet.

User Pwilcox
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