Cristina Ortega
Week 3 Lab
1/09/2015
Professor Yang
Lab 3.1 Network Reference Models
3.1.1
1. What would happen if wireless devices were not governed by the WIFI Alliance and each vendor had its own standards and protocol? What impact would this have on your personal life or business communications?
If the governed was not WIFI Alliance then each company will lose it customers because if you set a standard in just buying your product then you’re not going to go any farther than just a couple of months in selling them. This will lose interest in buying the product because then I would not know if it is safe or not.

Lab 3.1 Review 1 1. Why would a three- layer model of communication that has the layers physical, network, and application be insufficient to adequately describe network communication?

2. What is the history of the OSI reference model? How did it come about and why was it created? `

3. What is the history of the TCP/ IP model? Why was it created?
TCP/IP has two different names that come from. These key protocols two are usually considered the most important. The internet Protocol is the primary OSI network layer protocol that provides addressing, Datagram routing and other functions in a network. They were developed together with TCP/IP providing the mechanism for implanting the internet.

Lab 3.2 the OSI Reference Model
3.2.1
Using Figure 3- 1, define each layer of the OSI model in your own words and state what each layer provides. Use your textbook or Internet research to support your answer. 1. Physical: Physical parts that communicate and energy over those parts. 2. Data Link: Rules about when to use physical links: addressing specific to the physical links. 3. Network: Logical addressing routing. 4. Transport: Communicates functions useful to apps, but likely useful to many app. 5. Session: The