25. Full Duplex is one type of data flow; what are the other two? (Select only o

Question

25. Full Duplex is one type of data flow; what are the other two? (Select only one) a. Half Duplex and Simplex b. Duplex and Simplex c. Halfplex and Duplex d. Halfplex and Simplex 26. Serial signals move one bit at a time in sequence and parallel signals move multiple bits simultaneously. (one point) a. True b. False 27. Analog transmission of analog data includes these types of modulation. (Select all that apply) a. Amplitude Modulation (AM) b. Frequency Modulation (FM) c. Dual Modulation (DM) d. Phase Modulation (PM) 28. Analog transmission of digital data includes these types of modulation. (Select all that apply) a. Amplitude Shift Keying (ASK) b. Frequency Shift Keying (FSK) c. Quadrature Amplitude Modulation (QAM) d. Phase Shift Keying (PSK) 29. Digital transmission of analog data requires the analog data to be converted to digital form before transmission. a. True b. False 30. Ethernet Rapid Spanning Tree Protocol detects switch failure, works with redundant links, and performs which of the following? (Select all that apply) a. Disregards switching table rows for a failed switch b. Automatically re-routes traffic based on route costs in the switching table c. Changes traffic priority and re-routes traffic if it is 31. Power Over Ethernet (POE) does not: (Select all that apply) a. Interfere with message reception b. Provide 12.95 watts of DC at a device such as a VOIP phone c. Provide 12.95 watts of AC at a device such as a VOIP phone d. Provide 25.5 watts of DC at a device such as an IP camera

Explanation / Answer

25)a)

Half duplex and simplex are other two data flow types.

26)a)

True

27)a)b)d)

Amplitude modulation,frequency modulation and phase modulation .

28)a)b)c)d)

ASK,FSK,QAM,PSK

29)a)

True

30)b)

31)c)

A POE protocol does not provide 12.95 watts of AC .

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