Which statements are true for digital to digital Encoding schemes. A. Unipolar…
2025
Which statements are true for digital to digital Encoding schemes.
A. Unipolar encoding uses one level of value.
B. Unipolar encoded signal contains a direct current component (a component with zero frequency).
C. In NRZ-L, the level of the signal is dependent upon the state of the bit.
D. In NRZ-I, the signal is not inverted if a 1 is encountered.
E. RZ encoding scheme removes both DC components and problem of synchronization.
Choose the correct answer from the options given below:
A, B, C & E Only
A, C, D & E Only
B, C, D & E Only
A, B, D & E Only
- A.
1
- B.
2
- C.
3
- D.
4
Attempted by 42 students.
Show answer & explanation
Correct answer: A
Statement A is correct: Unipolar encoding uses one level of value. Statement B is correct: It contains a DC component due to non-zero average voltage. Statement C is correct: In NRZ-L, the signal level depends on the bit state. Statement D is incorrect: In NRZ-I, a 1 causes an inversion of the signal level. Since statement D is false, any option including it is incorrect.