The network layer service model "defines end-to-end packet transmission functionality between hosts transmitting and receiving." according to us. What does the service concept of the Interet network layer entail? What guarantees does the Intemet service model have about the host to host data chart delivery?

1) Consider a reliable data transfer protocol that uses only negative acknowledgments. Suppose the sender sends data only infrequently. Would a NAK-only protocol be preferable to a protocol that uses ACKs? Why? 2) Besides network-related considerations such as delay, loss, and bandwidth performance, there are other important factors that go into designing a CDN server selection strategy. What are they? 3) What are the five layers in the Internet protocol stack? What are the principal responsibilities of each of these layers? List five tasks that a layer can perform. 4) Why do HTTP, SMTP, and POP3 run on top of TCP rather than on UDP? 5) List six access technologies. Classify each one as home access, enterprise access, or wide-area wireless access, and then describe how they fundamentally operate.

The goal of this assignment is to explore the network packets associated with several typical online activities. You will have the chance to analyze bit-by-bit the flows associated with these services and evaluate different application and protocol parameters across the entire TCP/IP stack including Data Link Layer/Medium Access Control (L2), Network Layer (a.k.a. IP or L3), Transport Layer and Application Layer. To carry out this analysis, you will use Wireshark. Part of finishing this assignment will be learning how to use Wireshark effectively. While Wireshark allows you to capture packets on a network interface it can also be used to read previously collected packet traces.  Make sure to show the full steps and screenshots of capturing network packets on Wireshark.

According to us, the service model of a network layer "defines the characteristics of end-to-end packet transfer between transmitting and receiving hosts." What does the service concept of the Interet network layer entail? What guarantees does the Intemet service model have about the host to host data chart delivery?