Please help ?

3-34. n the UTP wiring used in LANs, how many wires are there in a cord? d. 8 e. 25 3-35 In the UTP wiring used in LANs, how many wire pairs are there in a cord? C. d. 8 e. 25 3-36. In UTP cables, each wire is surrounded by .copper b. a jacke c. insulation d. All of the above. 3-37. In 4 pair UTP, what is twisted? a. All of the wires are twisted around one another. b. The wires in each pair are twisted around each other. c. Both A and B d. Neither A nor B. 3-38. The outer covering of a UTP cord is its a. insulation b coating C, sheath d. length e. jacket 3-39.Which transmission medium is dominant for the access line between a NIC and the switch that serves the NIC? a. 4-pair UTP b. Optical fiber. c. Both are used about equally d. Neither A nor B. 3-40. When a signal grows weaker as it travels, this is called Choose the most specific answer.) a. a propagation effect b. noise e. All of the above. 3-4 A signal is 1/16 of its initial value when it arrives at the receiver. In decibels, this is power ratio of approximately C. d. e. 12 -16 c. d. 12 16 3-42 A signal is 1/1000 of its initial value when it reaches the receiver. How many decibels is this power ratio? b. 6, c. 20. d. 30 . 40 The noise floor is a. a brief large increase or decrease in the noise energy b. a brief small increase or decrease in the noise energy c. the maximum noise energy d. the average noise energy e. the minimum noise energy 3-43- 3-44. A noise spike is a. a brief large increase or decrease in the noise energy b. a brief small increase or decrease in the noise energy c. the maximum noise energy d. the average noise energy e. teminimum noise energy 3-45. As a signal propagates down a UTP cord, greater propagation distance will result in more noise errors, even if the noise level is constant. a True. b. False. 3-46 In Ethernet, limiting UTP cord runs to 100 meters limits to an acceptable level. a. attenuation b. noise errors c Both A and B 347 In most versions of Ethernet, what is the maximum cord length allowed by the standard? . 25 cm (a half inch). b. 100 meters c. Both A and B d. There is no maximum length in the standard. 3-48 When a fluorescent light interferes with UTP transmission, this is a EMI b. rosstalk interference c. terminal crosstalk interference d. All of the above 3-49. When a one pair in a UTP cord interferes with signals in other pairs, this is EMI b. crosstalk interference c terminal crosstalk interference d. internal noise