| 1. | The physical layer is concerned with the movement of _______ over the physical medium. |
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Answer: (d).bits
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| 2. | The _______ is the physical path over which a message travels. |
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Answer: (b).Medium
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| 3. | Before data can be transmitted, they must be transformed to ________. |
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Answer: (b).electromagnetic signals
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| 4. | A periodic signal completes one cycle in 0.001 s. What is the frequency? |
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Answer: (c).1 KHz
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| 5. | The physical layer concerns with |
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Answer: (a).bit-by-bit delivery
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| 6. | The physical layer translates logical communication requests from the ______ into hardware specific operations. |
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Answer: (a).data link layer
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| 7. | The term ......... describes the position of the waveform relative to time 0. |
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Answer: (b).Phase
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| 8. | In a frequency-domain plot, the horizontal axis measures the ________. |
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Answer: (b).frequency
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| 9. | In a time-domain plot, the horizontal axis is a measure of ________. |
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Answer: (d).time
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| 10. | If the bandwidth of a signal is 5 KHz and the lowest frequency is 52 KHz, what is the highest frequency? |
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Answer: (d).57 KHz
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