Attenuation, distortion, and noise are the three factors that contribute to transmission failure. What exactly is the problem, and how can we fix it so that things go more smoothly
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Attenuation, distortion, and noise are the three factors that contribute to transmission failure. What exactly is the problem, and how can we fix it so that things go more smoothly?
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- What is the difference between Simplex, Half Duplex, and Full Duplex? What is the importance of knowing those transmission modes?Poor transmission quality and poor sound quality are both caused by a number of factors, including attenuation, distortion, and noise. What steps can we take to make the situation better?What is the maximum data rate if that same system is subject to noise, with an average power level of 600 and an average noise level of 200?
- The level of the signal is inversely proportional to the a. Reliability of a system b. Efficiency of a system c. Accuracy of a system d. Bandwidth of a systemAn FM modulated signal has the form?(?) = 50 cos(? 107 ? + 2 cos(4000??))Determine1. the average transmitted power2. the peak-phase deviation3. the peak-frequency deviation4. the bandwidth of the FM modulated signalWhat would be the latency of the system? Express your answer in terms of k. Latency = What would be the throughput of the system? Express your answer in terms of k. Throughput = ___GIPS What would be the ultimate limit on the throughput? Express your answer as in integer. ______ GIPS
- 1) What is the major factor that makes coaxial cable less susceptible to noise than twistedpair cable? (a) Inner conductor (b) Diameter of cable (c) Outer sheath (d) Insulating material 2) Aliasing can be defined as errors occurring when (a) The sample rate exceeds twice the input frequency.(b) The bandwidth is less than the input frequency.(c) The number of bits per sample is low.(d) The sampling signal has been incorrectly identified. 3) In _______encoding, three levels are used: positive, zero, and negative. (a) Unipolar RZ (b) Bipolar RZ (c) Polar NRZ (d) Manchester NRZ 4) The ________ rate defines the number of data elements sent in 1sec; the ______ rate isthe number of signal elements sent in 1sec. (a) data; signal (b) signal; data (c) bit; baud (d) baud; bit5) The channel capacity of a noiseless channel can be improved by (a)Increasing the signal-to-noise ratio. (b) Decreasing the channel bandwidth.(c) Applying error correction technique. (d) Applying M-ary modulation scheme. 6)…16. Which one is not transmission impairment?a) Distortion b) Attenuation c) Signal d) Noise e) None17. If two signals, which carry data of the same type, interfere each other, then data in onechannel embeds into other. This is called:a) Noise b) Crosstalk c) Spectrum d) Attenuation e) None18. Which one of the followings cannot be improved at a constant temperature?a) Signal-to-noise ratio b) Bandwidth c) Signal powerd) Noise Power e) None19. Which one is a disadvantage of wired communication?a) Is useful only for point to point communicationb) Only a small partition of transmitted energy can be received, since energy distributeseverywherec) Useful bandwidth is less than other wireless transmissiond) It is requires more complex circuitse) None21. Which one is used to describe methods that enable transmission of two or more signalswith the same transmission system?a) Encoding b) Multiplexing c) Modulating d) Spectrum e) NoneSuppose that you noticed that flying two 60 mile trips was too much for a pigeon and you had to let the pigeon rest for 2 hours before returning. How does the “Winston Channel” compare to DSL under this circumstance?