1)In class, we studied the concept of an Internet Service Provider (ISP). Explai

Question

1)In class, we studied the concept of an Internet Service Provider (ISP). Explain in your own words the basic functionality of an ISP. (3 points)

2)In our home networks, as well as in other kinds of networks, computers are connected to a modem. Explain why. (3 points)

3)What are the two most common types of access networks? (2 points)

4)Suppose that Bob sends N back-to-back packets, each of length L bits, to Alice over 3 links (shown below). Suppose that the transmission rate of each link is R bits/sec. What is the end-to-end delay of sending all packets to Alice? Note, consider only the transmission delay that occurs in sending packets. Show the steps used for derivation. (7 points)

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Explanation / Answer

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Ques 1. ISP stands for Internet Service Provider. They are basically the organisations which provide the internet access services to the users. They can be either non-profit, commercial, owned by a community etc. They are available on different scale. They can provide services on a large scale like providing internet services to the entire country , or a mid scale like providing services in a state or on a small scale like providing the services in a city or a locality. The costumers pay to the ISP in order to access the services of the internet. In this way, they earn money. hence, the main functionality is to provide internet services to the user.

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