Watch and follow the YouTube video, the lesson contains three parts:
Key Information and content - all you need to do here is watch and listen. We recommend you take some notes for this one!
Learning activity - You are to complete the fill in the blanks activity.
Consolidation - these are past exam question and are for deliberate practice to check your understanding.
Task - Fill in the Blanks
Task - Exam Questions - Deliberate Practice
A layer can be removed/changed etc.
... without affecting any other layers
Each layer has its own purpose // seperates the purposes // self-contained
... so it does not need to consider what other layers do
... so it can be programmed individually
Individual protocols are each smaller/simpler to manage
Different layers can interface with different hardware