August 2024
Beginner
216 pages
5h 24m
English
Content preview from Exploring Computer Hardware
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Network Layers
The OSI 7 Layer Model is a conceptual framework used to describe the functions of a computer network and is split into seven different layers: Physical, Data Link, Network, Transport, Session, Presentation, and Application. Each layer handles a different part of the communication.
A layer serves the layer above it and is served by the layer below it.
Physical Layer (Layer 1) is concerned with transmitting raw bit streams over the physical medium. It translates data bits into electrical, radio, or optical signals. Characteristics such as voltage levels, timing of voltage changes, physical data rates, maximum transmission distances, ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.