1.Describe the seven layers of the OSI network model. Using a well‐known networked application, give an example of what occurs at each level of the model. Describe how the TCP/IP protocol suite maps onto the OSI model.
2. Network hardware typically consists of several different types of components: routers, switches, hubs, network interface cards, and cabling. Describe the functions o each of the aforementioned components, indicating where each operates in the OSI model and why.
3. TCP is rarely separated from IP, yet these are two distinct protocols. Describe the functions of TCP as separate from IP. Describe how UDP and TCP are different and why two different protocols are necessary over IP.
4. Describe the purpose and uses of VLANs as distinct from standard LAN technology. Consider a university campus network; describe a real‐world scenario where VLANs should be used.
5. A company requests and receives a range of IP addresses from IANA. The assigned range is
75.137.45.144/28. Explaining your work, answer the following:
a. How many machines can be directly connected to the Internet using this range?
b. If the company wishes to separate this network into two distinct and equally sized subnetworks, how would that be accomplished? How many machines may then be directly connected to the Internet?
c. Supposing that the company has many more machines than assigned IP addresses, how could the company provide access to Internet resources on all machines?