A signal in a network has a propagation velocity of 1.77x10' m/s and a delay of 4.3 us introduced by each repeater. If the round trip delay for two computers at either end of a link that includes three repeaters is 52.92 us, calculate the length of this link? Express your answer in kilometers.

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?

Why does asynchronous transmission have a non-constant delay between bytes?

A regular telephone line normally has bandwidth of 4000 Hz. The signal-to-noise ratio is usually 3162 (35 dB). What is the theoretical highest bit rate (capacity) of this regular telephone line? 4000 Kbps 3162 bps 46.5 Kbps None of the other choices listed is correct