Question: B8. Find the medium whose operational frequencies are the lowest. (a) Twisted Pair (b) Coaxial cable (c) Optical fiber B9. What is the radio line

B8. Find the medium whose operational frequencies are the lowest. (a) Twisted Pair (b) Coaxial cable (c) Optical fiber B9. What is the radio line of sight distance when antenna height is 200 meters? (a) 42.3 km (b) 46.3 km (c) 50.3 km (d) 54.3 km (e) 58.3 knm B10. What is the optical line of sight distance when antenna height is 200 meters? (a) 40.8 knm (b) 45.8 km (c) 50.8 km (d) 55.8 km (e) 60.8 km B11. If signal power is 0.1 Watt and noise power is 0.001 Watt, then what is the SNRdB? (a) 1 dB (b) 10 dB (c) 20 dB (d) 30 dB (e) 40 dB

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