1. Chapter 3
OSI
Model
• The model
• Functions of the layers
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2. Figure 3-1
OSI Model
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3. Figure 3-2
OSI Layers
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4. Figure 3-3
An Exchange Using the OSI Model
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5. Figure 3-4
Physical Layer
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6. Figure 3-5
Data Link Layer
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7. Figure 3-6
Data Link Layer Example
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8. Figure 3-7
Network Layer
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