A user in an Internet Café' is trying to download a file. If the download operation has been completed within 40 minutes, how much will be the size of the file knowing that the Internet link speed was 500 Kbps? (Express your answer in MB)
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- Suppose that R = 1 Gbps and Rc is 300 Mbps and Rs is 200 Mbps. Assuming that the servers are sending at their maximum rate possible, enter the link utilization of the shared link, whose rate is R, below. Enter your answer as a decimal, of the form 1.00 (if the utilization is 1, or 0.xx if the utilization is less than 1, rounded to the closest xx).What is the data transmission time to send a 20 GiB file over a link with a 1 Gbps line rate? You can assume there is no overhead. (Show your work)A sender and a receiver are connected by two routers as shown. The bandwidth of each link is 1,000,000 Bytes/sec and the propagation delay for each link is 0.1 msec. A file size of 1000 bytes needs to be transferred from source to destination. Calculate the total time taken to transfer the file if message switching is used. enter only the value and not any units. For example, If your answer is 10.4 msec, just enter the value 10.4.
- Calculate total time (in milliseconds) required to send a file of size of 8000 Bytes. Assume RTT (round trip time) of 80 milli second on a link with bandwidth of 0.8 x106bits /second and a packet size of 1000 Bytes where after sending each packet we must wait one RTT before sending the next packet.Skype is a well‑known VoIP system used not only for peer‑to‑peer conversations but also for audio and video conferencing involving three or more callers. Assume a video conference with a central server on Skype has N callers, and each caller generates a constant data stream at rate r bps. How many bits per second does the call initiator need to send? How many bits does each of other N‑1 callers need to send?Calculate total time (in milliseconds) required to send a file of size of 8000 Bytes. Assume RTT (round trip time) of 80 milli second on a link with bandwidth of 0.8 x106 bits /second and a packet size of 1000 Bytes where after sending each packet we must wait one RTT before sending the next packet.
- Computer A uses the Go-back-N ARQ protocol to send a 110 Mbytes file to computer B with a window size of 15. Given each frame carries 100K bytes data. How long does it take to send the whole file (the total time taken from A sending the first bit of the file until A receiving the last acknowledgment)? Given that the transmission rate of the link is 500 Mbps and the propagation time between A and B is 15ms. Assume no data or control frame is lost or damaged and ignore the overhead due to header and trailer.If we know a printer's IP address is 200.23.16.202 and subnet mask is 255.255.255.224, then, what's the network ID and host ID of this printer? Write both in the standard dot-decimal format without attaching the subnet mask. ( show the calculation)What is the efficiency if a 100-byte file is transmitted using Ethernet? A 10,000-byte file?
- Suppose Host A wants to send a large file to Host B. The path from Host A to Host B has three links, of rates R1=500 kbps, R2=2 Mbps, and R3=1 Mbps a. Assuming no other traffic in the network, what is the throughput for the file transfer? b. Suppose the file is 4 million bytes. Dividing the file size by the throughput, roughly how long will it take to transfer the file to Host B? c. Repeat (a) and (b), but now with R reduced to 100 kbps.Based on the given block data below, answer the following questions. Hint: First do Google search for ‘packet dump decode’. Then cut and paste the block of data below into the input data section. Then press decode. You will be able to find the answer from the decoding result. Hint Q6: For the payload of the application layer, look at the last few bytes in ASCII. You can use the ASCII character table to manually convert them. If you understanding the layer 4 destination port #, you understand what it is asking for. There is only one kind of information for the port #. Data block to be decoded: 00 11 bc b5 49 40 b8 8d 12 00 0d fa 08 00 45 00 00 37 99 09 00 00 ff 11 ea 9f 0a 07 03 1a 42 aa e8 41 c7 19 00 35 00 23 a3 9e 02 90 01 00 00 01 00 00 00 00 00 00 05 6d 69 74 72 65 03 6f 72 67 00 00 01 00 01 Please answer the following questions after decoded the above data block: Q1: (Layer 4) Protocol is: Q2: Source MAC address: Q3: Destination MAC address: Q4: Source IP address:…1. Suppose two hosts, A and B, are separated by 30,000 kilometers and are connected by a direct link of R = 3 Mbps. Suppose the propagation speed over the link is 2.5 x 108 meters/sec. a. Calculate the bandwidth-delay product, R _ dprop. b. Consider sending a file of 900,000 bits from Host A to Host B. Suppose the file is sent continuously as one large message. What is the maximum number of bits that will be in the link at any given time?