Data Communication and Computer Network
Data and Signals
Q. ________ 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
Similar Questions
1. Before data can be transmitted, they must be transformed to ________.
A.  periodic signals B.  electromagnetic signals C.  aperiodic signals D.  low-frequency sine waves
2. A periodic signal completes one cycle in 0.001 s. What is the frequency?
A.  1 Hz B.  100 Hz C.  1 KHz D.  1 MHz
3. In a frequency-domain plot, the horizontal axis measures the ________.
A.  peak amplitude B.  frequency C.  phase D.  slope
4. In a time-domain plot, the horizontal axis is a measure of ________.
A.  signal amplitude B.  frequency C.  phase D.  time
5. If the bandwidth of a signal is 5 KHz and the lowest frequency is 52 KHz, what is the highest frequency?
A.  5 KHz B.  10 KHz C.  47 KHz D.  57 KHz
6. What is the bandwidth of a signal that ranges from 1 MHz to 4 MHz?
A.  4 MHz B.  1 KHz C.  3 MHz D.  none of the above
7. As frequency increases, the period ________.
A.  decreases B.  increases C.  remains the same D.  doubles
8. Given two sine waves A and B, if the frequency of A is twice that of B, then the period of B is ________ that of A.
A.  one-half B.  twice C.  the same as D.  indeterminate from
9. A sine wave is ________.
A.  periodic and continuous B.  aperiodic and continuous C.  periodic and discrete D.  aperiodic and discrete
10. . If the maximum amplitude of a sine wave is 2 V, the minimum amplitude is ________ V.
A.  2 B.  1 C.  -2 D.  between -2 and 2
DATA COMMUNICATION AND COMPUTER NETWORK TOPICS