Computer Science / Unit 2 CS 0065 short lesson, about 20 seconds
Layering
Captions available
The idea
Layering stacks a system into levels of abstraction, each layer serving the one above it and hiding its own inner workings.
In practice
A chat app's interface rides on message logic, which rides on a network layer nobody chatting ever sees.
Where people slip
A layer that leaks its details up the stack has failed its job.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
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