2. OSI model
3. Actually covers
4. Presentation 5. Session 6. Application achitechture Peer-to-peer Client/server 7. Application layer protocols
8. SMTP 9. DNS Other examples
10. Streaming 11. FTP 12. HTTP
13. TCP or UDP? A standard
14. HTTP questions
15. What is GET and POST? 16. Default port number for HTTP? 17. HTTP response message Other possibilities:
18. 400 Bad request 19. 301 Moved permanently 20. And more. See RFCs for details. 21. Exercise
22. host:www.sde.dk 23. Why HTTP stuff? 24. Why host? 25. Possible solution Send Received 26. Web proxy
27. Uses If-modified-since header line 28. Homework
29. Redo the HTTP exercise, both using a browser and telnet.
30. SMTP example
31. DNS 32. DNS root servers Root server geographically 33. Dns exercise
34. dig dr.dk MX 35. dig google.com 36. dig @dns101.telia.com google.com 37. And how does this look in wireshark?
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