Assignment 1 1. List the layers of the OSI model and the TCP/IP protocol suite (the Internet Model) 2. How do the layers of the OSI correlate to the layers of the TCP/IP protocol suite? 3. Which...

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Assignment 1 1. List the layers of the OSI model and the TCP/IP protocol suite (the Internet Model) 2. How do the layers of the OSI correlate to the layers of the TCP/IP protocol suite? 3. Which layers of the TCP/IP protocol suite are the network support layers and which layers are the user support layers? 4. What is data encapsulation (with respect to Questions 1-3)? 5. What are the responsibilities of the Data Link layer? 6. What is the difference between Network layer and Transport layer delivery? 7. If the Data link layer can detect errors between hops, why do you think we need another mechanism at the Transport layer? 8. What are the responsibilities of the Network layer? 9. What are the responsibilities of the Transport layer? 10. What is the difference between a port address, a logical address and a physical address? 11. Name some services provided by the Application layer 12. What are the advantages of combining Session, Presentation and Application layers of the OSI model to a single layer in the TCP/IP protocol suite? 13. What is an advantage of a hierarchical name space over a flat name space for a system the size of the Internet? 14. What is the difference between a primary and a secondary DNS? 15. Why do we need POP3 or IMAP for electronic mail? 16. What is the purpose of FTP? 17. What anonymous FTP? 18. How is HTTP related to WWW? 19. What is a URL and what are its components? 20. What is a proxy server and how is it related to HTTP? 21. What does HTML stand for and what is its function? 22. What are the SNMP components? 23. List the SNMP v1 and v2 message types and their function 24. Can two devices connected to the same Frame Relay network use the same DLCIs? 25. Compare an SVC with a PVC 26. How is an ATM virtual connection identified? 27. Why is SONET called a synchronous network?