Match the following : \(\begin{array}{clcl} \text{(a)} & \text{Line Coding} &…
2016
Match the following :
\(\begin{array}{clcl} \text{(a)} & \text{Line Coding} & \text{(i)} & \text{A technique to change analog signal to } \\ &&& \text{digital data} \\ \text{(b)} & \text{Block Coding} & \text{(ii)} & \text{Provides synchronization without} \\ &&& \text{increasing number of bits} \\ \text{(c)} & \text{Scrambling} & \text{(iii)} & \text{Process of converting digital data to } \\ &&& \text{digital signal}\\ \text{(d)} & \text{Pulse code Modulation } & \text{(iv)} & \text{Provides redundancy to ensure }\\ &&& \text{ synchronization and inherits error detection} \\ \end{array}\)
Codes :
- A.
(a)-(iv), (b)-(iii), (c)-(ii), (d)-(i)
- B.
(a)-(iii), (b)-(iv), (c)-(ii), (d)-(i)
- C.
(a)-(i), (b)-(iii), (c)-(ii), (d)-(iv)
- D.
(a)-(ii), (b)-(i), (c)-(iv), (d)-(iii)
Attempted by 50 students.
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Correct answer: B
Answer: The correct matching is given below with brief explanations.
Line Coding → Process of converting digital data to digital signal (it defines voltage/time patterns used to represent bits).
Block Coding → Provides redundancy to ensure synchronization and can include error-detection (adds extra bits according to coding rules).
Scrambling → Provides synchronization without increasing the number of bits (by altering bit patterns to guarantee sufficient transitions).
Pulse Code Modulation → Technique to change an analog signal into digital data (sampling and quantization produce a digital representation).
Thus the correct mapping is: (a) Line Coding → process of converting digital data to digital signal; (b) Block Coding → provides redundancy and error-detection; (c) Scrambling → provides synchronization without increasing bits; (d) Pulse Code Modulation → converts analog signal to digital data.