61. | ___________ conversion involves three techniques: line coding, block coding, and scrambling. |
Discuss |
Answer: (d).Digital-to-digital
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62. | ________ is the process of converting digital data to a digital signal. |
Discuss |
Answer: (b).Line coding
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63. | _______ provides redundancy to ensure synchronization and inherent error detection. |
Discuss |
Answer: (a).Block coding
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64. | ________ is normally referred to as mB/nB coding; it replaces each m-bit group with an n-bit group. |
Discuss |
Answer: (a).Block coding
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65. | ________ provides synchronization without increasing the number of bits. |
Discuss |
Answer: Scrambling
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66. | Two common scrambling techniques are ________. |
Discuss |
Answer: (c).B8ZS and HDB3
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67. | The most common technique to change an analog signal to digital data is called __________. |
Discuss |
Answer: (b).PCM
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68. | The first step in PCM is ________. |
Discuss |
Answer: (c).sampling
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69. | There are three sampling methods: __________. |
Discuss |
Answer: (c).ideal, natural, and flat-top
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70. | ______ finds the value of the signal amplitude for each sample; ____ finds the change from the previous sample. |
Discuss |
Answer: (b).PCM; DM
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