1. What are the bits transmitted for the NRZ-L system? a) 10001101 b) 01001110 c) 10110001 d) 10001101 AnswerAnswer: c [Reason:] High – 0, Low -1. 2. What are the bits transmitted for the return to zero system? a) 01001 b) 10110 c) 10010 d) 01101 AnswerAnswer: a [Reason:] First half low – 0, First…