B5. What is the bit rate of the following binary signal? 0.8 0.6 1 0 0.2 0.2 0.6 0.8 Timelmsect (a) 200 bps (b) 2000 bps (c) 20000 bps (d) 50000 bps (e) 5000 bps () 500 bps B6. Capacity of a channel is 4000 bps and the bandwidth of the channel is 1000 Hz. What is the SN RaB (a) 15 dB (b) 11.76 dB (c) 31 dB (d) 14.91 dB (e) 4 dB (f) 2 dB B7. Find the medium whose operational frequencies are the highest. (a) Twisted Pair (b) Coaxial cable (c) Optical fiber