1. (TCO 1) Block encoding takes several _____ and sends it out as a new code word.
2. (TCO 1) 1000 Mbps Ethernet uses _____ block encoding.
3. (TCO 1) In NRZ, line encoding is a binary code where 1s are represented by _____ .
absence of a signal
presence or level of a signal
a circular, sinusoidal signal
line block coding
4. (TCO 1) Digital signals are _____.
continuously varying quantities
based on block signaling
based on transmission errors