1. in phase modulation transmission, the peak amplitude and frequency of the carrier signal varies, but as the amplitude of the signal changes, the phase of the carrier remains constant. A. True B. False 2.multiple beams from a light source move through the core of an optic fiber in different paths when in multimode A. True B. False 3.although two nodes are physically connected by a transmission medium such as cable or air, the _______ controls how the medium is used. A. delimiter B. block coding C. sampling D. set rate 4. The term phase, or phase shift, describes the position of the waveform relative to time ______ A. drift B. 10 C. 0 D. cycle 5.when data packets are checked for error using polynomials: the degree of a polynomial is the lowest power in the polynomial A. True B. False