From the course: AWS Certified Advanced Networking - Specialty (ANS-C01) Cert Prep

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OSI model explained for beginners

OSI model explained for beginners - Amazon Web Services (AWS) Tutorial

From the course: AWS Certified Advanced Networking - Specialty (ANS-C01) Cert Prep

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OSI model explained for beginners

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Hello, everyone. Today, we're going to talk about the OSI model, one of the most important concepts in networking. So if you've ever wondered how a message you send on your phone reaches your friend, or how a website loads when you type in a URL, the OSI model explains exactly how that happens. So what exactly is the OSI model? OSI stands for Open Systems Interconnection. It's a conceptual framework that explains how data moves from one device to another over a network. It helps network engineers, developers, and IT professionals understand and troubleshoot how data travels. Think of it like a step-by-step map. Every time you send a message, stream a video, or open a website, your data passes through these seven layers. Before the OSI model, different companies made networking systems that often couldn't talk to each other. For example, a computer from one manufacturer might not communicate properly with a network…

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