Assume you urgently need to transfer 40 Gigabytes of data from Los Angeles to New York City. For data transfer, you have a 500 kilobit dedicated connection. Would you prefer to transfer the data over this connection, or will you take it yourself to New York?
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- a. Assume your university library has a million books. Calculate the number of bytes of data if all of these books were stored online and accessible through a computer network (to the closest order of magnitude). b. How long does it take to transmit the full library of books if the transmission medium's data rate is 10 Mbps, the original Ethernet's speed? If we have a 1 Gbps connection, how long will it take? (The time it takes to download your whole college library is represented by this number.)Computer Science Suppose that you had more than 4GByte of data to send and could only afford one memory stick but you had plenty of pigeons available (Winston’s extended family). You reason that you can send the data stick back, load it with the next 4GByte of data. What would the throughput of this channel be now?Suppose you work in a company, and you need to move 40 Terabytes worth of data from one datacenter to a different center on a different power grid. The network is under maintenance and the available bandwidth for this project is 100 Mbps only for the next 90 days. The data is needed as soon as possible. Are we able to transfer the data over the network within a reasonable amount of time or should we ship the data disks by mail to the new datacenter? Support your answer with numbers.
- a. Assume there are one million books in your campus library. Approximate (to the nearest order of magnitude) how many bytes of data there are if all these books were stored online and accessible across a computer network. b. How long does it take to transfer the entire collection of books if the data rate of the transmission medium is 10 Mbps, the speed of the original Ethernet? How long does it take if we have a line with a speed of 1 Gbps? (This value represents the time needed to download your entire campus library.)Assume a shared connection of 1 Mbps (for example, an Ethernet bus). How long does it take (in microseconds) to transmit a 1000-bit frame over this connection?Assume there is a 1 Mbps shared connection (e.g. Ethernet bus). How long (in microseconds) does it take to send a 1000-bit frame over this link?
- Suppose there is a shared link (e.g. Ethernet bus) of 1 Mbps. How much time is needed (in microseconds) to transmit a 1000 bits long frame on this link?Assume there is a shared connection with a 1 Mbps speed, such as an Ethernet bus. How long (in microseconds) does it take to deliver a frame with a 1000 bit length over this link?Suppose there are two links between a source and a destination. The first link has trans- mission rate 100 Mbps and the second link has transmission rate 10 Mbps. Assuming that the only traffic in the network comes from the source, what is the throughput for a large file transfer? A. 100 Mbps B. 10 Mbps C. 1 Gbps D. 110 Mbps
- Suppose a switch is built using a computer workstation and that it can forward packets at a rate of 500,000 packets per second, regardless (within limits) of size. Assume the workstation uses direct memory access (DMA) to move data in and out of its main memory, which has a bandwidth of 2 Gbps, and that the I/O bus has a bandwidth of 1 Gbps. At what packet size would the bus bandwidth become the limiting factor?Assume that there is a shared connection (for example, an Ethernet bus) with a speed of 1 Mbps. How much time (in microseconds) is required to send a frame with a length of 1000 bits over this link?Computer Science Assume the length of each message is L=5, the access link has a speed of X=180 Mbps, and there are B=6 messages per second on average. What is the total average delay for receiving a message when no cache is used, i.e., the sum of LAN delay, access delay, and internet delay? Give your answer in milliseconds.