Q1 a) Consider the following bit string 000110000110. Sketch its waveform using: i) NRZ-L in) Bipolar AMI assuming that the most recent preceding 1 bit has negative voltage i Manchester iv) Differential Manchester assuming that the most recent preceding bit has negative voltage v) NRZI assuming that the most recent preceding bit has negative voltage b) What are the advantages and disadvantages of NRZ-L encoding