| 1. | Which transmission media has the highest transmission speed in a network? |
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Answer: (c).optical fiber
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| 2. | Bits can be send over guided and unguided media as analog signal by |
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Answer: (a).digital modulation
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| 3. | Which data communication method is used to transmit the data over a serial communication link? |
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Answer: (c).Full duplex
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| 4. | The method of communication in which transaction takes place in both directions,but only in one direction at a time, is called ? |
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Answer: (d).Half-duplex
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| 5. | In communication satellite, multiple repeaters are known as? |
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Answer: (d).Transponders
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| 6. | Loss in signal power as light travels down the fiber is called? |
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Answer: (a).Attenuation
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| 7. | Which of the following devices modulates digital signals into analog signals that can be sent over traditional telephone lines? |
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Answer: (d).Modem
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| 8. | Which of the following performs modulation and demodulation? |
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Answer: (d).modem
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| 9. | The process of converting analog signals into digital signals so they can be processed by a receiving computer is referred to as |
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Answer: (d).digitising
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| 10. | Which of the following communication modes support two-way traffic but in only one direction at a time? |
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Answer: (b).half duplex
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