TDC1231 Lec4 Quiz

Polar and bipolar encoding are types of _______ coding.

• line
• block
• scrambling
• None of the choices are correct

___________ conversion involves three techniques: line coding, block coding, and scrambling.

• Analog-to-digital
• Digital-to-analog
• Analog-to-analog
• Digital-to-digital

In _____, the level of the voltage determines the value of the bit.

• NRZ-I
• NRZ-L
• NRZ-I or NRZ-L
• None of the choices are correct

In ______, the change or lack of change in the level of the voltage determines the value of the bit.

• NRZ-I
• NRZ-L
• NRZ-I or NRZ-L
• None of the choices are correct

The idea of RZ and the idea of NRZ-L are combined into the ________ scheme.

• Manchester
• differential Manchester
• Manchester or differential Manchester
• None of the choices are correct

The idea of RZ and the idea of NRZ-I are combined into the ________ scheme.

• Manchester
• differential Manchester
• Manchester or differential Manchester
• None of the choices are correct

In Manchester and differential Manchester encoding, the transition at the middle of the bit is used for __________.

• bit transfer
• baud transfer
• synchronization
• None of the choices are correct

The _____ scheme uses data patterns of size 2 and encodes the 2-bit patterns as one signal element belonging to a four-level signal.

• 4B5B
• 2B1Q
• B8ZS
• None of the choices are correct

Which encoding method uses alternating positive and negative values for 1s?

• NRZ-I
• RZ
• Manchester
• AMI

Block coding can help in _______ and _________ at the receiver.

• synchronization and error detection
• synchronization and attenuation
• error detection and attenuation
• error detection and distortion