1. Chapter 23 Upper OSI Layers

2. Figure 23-1 Session Layer Dialog

3. Figure 23-2 Session-to-Transport Layer Communication

4. Figure 23-3 Synchronization Points

5. Figure 23-4 SPDU

6. Figure 23-5 Presentation Layer Functions

7. Figure 23-6 Direct and Indirect Methods of Translation

8. Figure 23-7 Concept of Encryption and Decryption

9. Figure 23-8 Encryption/Decryption Methods

10. Figure 23-9 Monoalphabetic Substitution

11. Figure 23-10 Polyalphabetic Substitution

12. Figure 23-11 Transpositional Encryption

13. Figure 23-12 Encoding/Decoding

14. Figure 23-13 Permutation

15. Figure 23-14 Substitution

16. Figure 23-15 Product

17. Figure 23-16 Exclusive OR

18. Figure 23-17 Rotation

19. Figure 23-18 DES

20. Figure 23-19 Subkey Generation in DES

21. Figure 23-20 One of the 16 Steps in DES

22. Figure 23-21 Public Key Encryption

23. Figure 23-22 RSA

24. Figure 23-23 RSA Encryption and Decryption

25. Figure 23-24 Security of RSA

26. Figure 23-25 Signature Authentication

27. Figure 23-26 Data Compression Methods

28. Figure 23-27 Run-Length Encoding

29. Figure 23-28 MHS

30. Figure 23-29 Message Format in MHS

31. Figure 23-30 Virtual File Storage

32. Figure 23-31 Local Access

33. Figure 23-32 Remote Access

34. Figure 23-33 Virtual Terminal