Problem
Answer the questions below. Some of the questions are basic, while others will require some extra reading/searching. (In the book or using search engines such as Google) so that you can build on the basics that you know. Use as much space as needed to answer the following questions. If you use the web, cite the URLs used.
Answers must be in complete sentences, with proper grammar and spelling. Cite your sources!
A. Mention the seven layers of the OSI stack, and describe the basic function of each layer.
B. What are the differences between the circuit switched and packet switched networks? Give examples of each.
C. What is the difference between hubs, switches, bridges, routers, repeaters and amplifiers?
D. What are the minimum length and the maximum length for an Ethernet frame? Why do we have those minimum and maximum lengths?
E. Could there be collisions on a switch? Justify your answer.
F. Rank the following LANs from most secure to least secure: Switched LAN, Wireless LAN and Shared LAN. Explain your reasoning.
G. What would happen if two machines on the same LAN had the same MAC address?
H. What would happen if two computers in the world had the same IP address? Justify your answer.
I. Why do we have layers in the OSI model and protocols in general?