Implementing basic encryption and decryption algorithms in Python Caesar cipher,

1. Chapter 12
Local Area Networks
• Project 802
• Ethernet
• Token Ring
• FDDI
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2. Figure 12-1
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OSI Model and Project 802

3. Figure 12-2
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Project 802

4. Figure 12-3
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PDU Format

5. Figure 12-4
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PDU Control Field

6. Figure 12-5
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7. Figure 12-6
WCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998
Evolution of CSMA/CD

8. Figure 12-7
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MAC Frame

9. Figure 12-8
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Ethernet Segments

10. Figure 12-9
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11. Figure 12-9-continued
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10BASE5

12. Figure 12-10
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Transceiver

13. Figure 12-11
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14. Figure 12-11-continued
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10BASE2

15. Figure 12-12
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16. Figure 12-12-continued
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10BASET

17. Figure 12-13
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18. Figure 12-13-continued
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1BASE5

19. Figure 12-14
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