In NRZ - Inversion (NRZ-I) line encoding scheme, the change or lack of change in polarity determines the value of a symbol. Here a "0" symbol inverts the polarity a "1" does not. Levels of +10v and -10v are used. a. Assuming that the level of the signal is +10 V at t=0, draw the signal to carry through the medium if the sequence of bits to send is: 0010110011 [6 Marks]. You need to carefully label your sketch. b. Explain how this line encoding scheme (NRZ-I) is ensuring or not Self-synchronization. [4 Marks]