computer science

Don’t copy and paste the answer from a google search. Please, use your own words.

1. A client sends a 200-byte request message to a service, which produces a response containing 5000 bytes. Estimate the total time to complete the request in each of the following cases, with the performance assumptions listed below:

                i)             Using connectionless (datagram) communication (for example, UDP);

                ii)            Using connection-oriented communication (for example, TCP);

                iii)           The server process is in the same machine as the client.

                [Latency per packet                (local or remote, incurred on both send and receive): 5 ms

                Connection setup time (TCP only): 5ms

                Data transfer rate: 10 Mbps

                MTU: 1000 bytes

                Server request processing time: 2  ms

                Assume that the network is lightly loaded.]

2. The Internet is far too large for any router to hold routing information for all destinations. How does the Internet routing scheme deal with this issue?

3. What is the task of an Ethernet switch? What tables does it maintain?


4. Explain how it is possible for a sequence of packets transmitted through a wide area network to arrive at their destination in an order that differs from that in which they were sent. Why can’t this happen in a local network?

5. Research/Summarize on some (at least 3) of the tools and simulators that can be used to develop applications in clusters (Min. 1 page)

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