Data and Signals Questions

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11.

________ is a type of transmission impairment in which the signal loses strength due to the resistance of the transmission medium.

A

Attenuation

B

Distortion

C

Noise

D

Decibel

Correct Answer: A

None.

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12.

________ is a type of transmission impairment in which the signal loses strength due to the different propagation speeds of each frequency that makes up the signal.

A

Attenuation

B

Distortion

C

Noise

D

Decibel

Correct Answer: B

None.

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13.

________ is a type of transmission impairment in which an outside source such as crosstalk corrupts a signal.

A

Attenuation

B

Distortion

C

Noise

D

Decibel

Correct Answer: C

None.

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14.

When propagation speed is multiplied by propagation time, we get the ________.

A

throughput

B

wavelength of the signal

C

distortion factor

D

distance a signal or bit has traveled

Correct Answer: D

None.

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15.

Data can be ________.

A

analog

B

digital

C

(a) or (b)

D

none of the above

Correct Answer: C

None.

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16.

_______ data are continuous and take continuous values.

A

analog

B

digital

C

(a) or (b)

D

none of the above

Correct Answer: A

None.

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17.

_______ data have discrete states and take discrete values.

A

Analog

B

Digital

C

(a) or (b)

D

None of the above

Correct Answer: B

None.

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18.

Signals can be ________

A

analog

B

digital

C

either (a) or (b)

D

neither (a) nor (b)

Correct Answer: C

None.

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19.

. _____ signals can have an infinite number of values in a range.

A

Analog

B

Digital

C

(a) or (b)

D

None of the above

Correct Answer: A

None.

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20.

_______ signals can have only a limited number of values.

A

Analog

B

Digital

C

(a) or (b)

D

None of the above

Correct Answer: B

None.

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