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- Calculate the minimum timeout value for a stop-and-wait algorithm running over a 50-meter point-to-point copper link. Assume a minimum delay of 5 µs at the receiver. If you know the distance between two points, you can calculate the speed-of-light latency, although you have to be careful because light travels across different media at different speeds: It travels at 3.0 × 108 m/s in a vacuum, 2.3 × 108 m/s in a copper cable, and 2.0 × 108 m/s in an optical fiber.if you are given alow-pass channel that ends at 40MHz and you knew that the SNR for this channel is 255, then the maximum number of signal levels to be used over this particular channel equal?What is the propagation time if the distance between the two points is 48,900 ? Assume the propagation speed to be 2.4 x 108 meter/second in cable. a. 0.5 ms b. 20 ms c. 50 ms d. 200 ms
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- For data is transmitted over twisted-pair cable, you have these characteristics: A signal's power on the channel is 60 dB, signal attenuation is 2 dB per 100 meters, and average noise power on the cable is 0.15 dB per meter. Answer the following questions: What's the S/N ratio at the end of a 60-meter channel? What's the S/N ratio at the end of a 1.5-kilometer channel? What's the maximum channel length if the receiving device requires at least 25 dB of S/N ratio for reliable operation?Describe Transmission Delay in Different Topologies.