Line coding, block coding and scrambling are conversion techniques for

• Analog to analog conversion

• Analog to digital conversion

• Digital to analog conversion

• Digital to digital conversion

Which of the following are line coding schemes?

• Unipolar,

• Polar

• Multitransition

• Bipolar

• Multiline

Mention any five line coding characteristics.

Goal in data communications is to ______ the signal rate.

These two signals represents which encoding schemes?

• AMI & Pseudoternary

• NRZ-L & NRZ-I

• Manchester & Differential Manchester

• NRZ & AMI

In mBnL coding, first two letters define the ______ pattern, and the second two define the _______ pattern.

• Signal, Line

• Line, Data

• Data, Data

• Data, Signal

The two binary, one quaternary (2B1Q) means__________.

• the 4-bit patterns encoded as one signal element belonging to a four-level signal

• the 2-bit patterns encoded as one signal element belonging to a four-level signal

• the 2-bit patterns encoded as one signal element belonging to a two-level signal

• the 4-bit patterns encoded as one signal element belonging to a two-level signal

Block coding provides ___________ to ensure

synchronization and inherent error detection.

In which technique, eight consecutive zero-level voltages are replaced by the sequence 000VB0VB?

• B8ZS

• HDB3

• 8B/10B

• All of the above

A PCM encoder includes which three processes?

• Sampling

• Quantizing

• Modulating

• Encoding