ETA Fiber Certification Technician

A _____________ is used with an overfilled light source when testing loss in a multimode fiber and is placed on the ____________ MQJ. - Correct Answers Mandrel Wrap Light Source Back reflections from a mechanical interconnection can interfere with the operation of a __________________. - Correct Answers singlemode laser Checking the power at the _________________ should be the first test that is done when troubleshooting a network problem. - Correct Answers receiver Multiple channels carrying digital signals on the same fiber is an example of _____________________. - Correct Answers multiplexing ______________________ dispersion affects both singlemode and multimode fibers. - Correct Answers Chromatic material Tensile strength is the ability of a fiber to be pulled without breaking. (True/False) - Correct Answers True Which of the following is a workable solution to combat Chromatic Dispersion? a) Reduce cable length b) Reduce light source spectral width c) Reduce light source wavelength d) Reduce light source power - Correct Answers b) Reduce light source spectral width The NEC considers an installed fiber optic cable this is not terminated at equipment other than a connector an not tagged for future use as a(an) _____________ cable. - Correct Answers abandoned Find the link attenuation allowance for a fiber link that is 700 meters in length, has 3 matted pairs, and 2 splices with a 1300nm transmitter. a) 3.90dB b)4.55dB c) 3.60dB d) 3.00dB - Correct Answers a) 3.90dB Tier 1 testing accomplishes insertion loss, cable length, polarity verification, and overall fiber link attenuation and reflectance loss at connectors and splices. (True/False) - Correct Answers True A mechanical splice will be identified on an OTDR trace as a _______________ event. - Correct Answers reflective A fusion splicer creates a permanent splice when the optical fiber is melted together by an electric arc between a pair of electrodes. (True/False) - Correct Answers True An optical attenuator is a passive device that is used to reduce the _____________________ of an optical signal. - Correct Answers power level Fusion splices are most likely used in the middle of a _________ fiber run. - Correct Answers long A light source and power meter are connected together with two MQJ's. The reference power on the power meter is -15.3dBm. A 200 meter cable is inserted between the MQJ's and the measured power on the meter now reads -17.5dBm. the loss would be ________. - Correct Answers 2.2