Question

41. Which of the following types of communications cabling has the longest usable transmission distance?

A. Single-mode optical fiber

B. Multimode optical fiber

C. Category 6A

D. Category 6

42. What's the operating frequency of a Category 5 cable that's 1,500 feet long at ACR = 0?

A. 4.5 MHz

B. 10 MHz

C. 20 MHz

D. 200 MHz

43. All of the following statements are correct except: A. Plenum cables don't produce toxic gases when they burn.

B. A plenum cable can be substituted for a riser cable.

C. Plenum cables always produce toxic gases when they burn.

D. Riser and plenum cables have the same flame rating.

44. Which category of UTP cabling can be used with 10GBASE-T applications?

A. RG-58

B. Category 3

C. Category 4

D. Category 6A

55. Which of the following tools is used with an amplifier probe to find a specific copper cable in a large bundle of cables?

A. Tone generator

B. Fish tape

C. Continuity tester

D. Voltage meter

Answer 1

41) A. Single-mode optical fiber has the longest usable transmission distance because the core of this cable is smaller than ohters.

42) C. 20 MHz

43) A. Plenum cables don't produce toxic gases when they burn. This statement is false because Plenum cables emits toxic fumes but it is less.

44) D. Category 6A cabling can be used with 10GBASE-T applications to provide higher performance.

55) A. Tone generator is used with an amplifier probe to find a specific copper cable in a large bundle of cables.


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