1. If a telephone lise has a bendwidth of 4KH, what is the maximum number of beas we emen transumit using 64-QAM? 2. If our equipment in problen 1 opcrates at 1200 Basd what is the actual dias rite we are tranamitring? 3. Suppose a local loop (residential analog pbone line) has a signal to noise ratio of 35dB and a bandwidth of 4000Hz. What is the maximum possible data rate with a modem? 4. If we have a channel with 4KHz bandwidth and we want to send data at 100Kbps, what is the minimum signal to noise ratio in decibels? 5. A 400km long cable runs at the T1 data rate. The propagation speed in the cable is 2/3 of the speed of light. How long does it take a bit to travel from one end to the other? How many bits can be sent in tha amount of time? (T-1 lines operate at 1.544Mbps ) 6. How many bits can fit on a link with a 2ms delay if the bandwidth of the link is 10 Mops? 7. A signal has a wavelength of 1m in air. What is the frequency of the signal? 8. If a signal with 200 milliwatts power passes through a device with an average noise level of 2 microwat what is the signal to noise ratio in Decibels? 9. Television channels are 6MHz wide. How many bits/sec can be sent if four-level digital signals are Assume a noiseless channel. 10. The attenuation of a signal is 10dB. What is the final signal power if it was originally 5 watts