Fiber Install and Activation (A+ Guaranteed)

Which standards organization is considered to be the creator of the worlds' most recognized communications standards, known as "recommendations"? correct answers The International Telecommunications Union (ITU) In which component in a fiber-optics communication system do changes to the intensity of the optical signal occur? correct answers The optical transmitter What is a drawback of using Fabry-Perot (F-P)lasers in high-speed data (HSD) networks? correct answers The emission of a number of discrete wavelengths or side modes. Why are laser diodes most effective when coupled to singlemode fiber? correct answers Its high coupled power, directionality, and speed. What are the factors that contribute to an optical receiver's sensitivity? correct answers Noise, responsivity, response time, linear response, back reflection, optical detector. What is a positive-intrinsic-negative (PIN) diode? correct answers An optical detector with current flow that is linear to the intensity of light photons, with one electron/hole pair created for every absorbed photon until saturation. What does the amplification process in an avalanche photodiode (APD) introduce into the electrical output of an optical detector? correct answers Noise What function does the detector in an optical receiver perform? correct answers Conversion of an optical carrier to an electrical signal, and demodulation of the modulated optical carrier. What happens if the optical signal exceeds the maximum specified input power into a photodetector? correct answers Nonlinear operation resulting in distortion, data errors, and signal loss. What is a characteristic of light in a laser beam? correct answers The laser beam consists of a limited range of wavelengths (monochromatic), with all light waves in phase (coherent light). Monitoring the status of optical nodes correct answers Involves the use of a node transponder that continuously monitors a number of critical functions. Digital return path transmissions correct answers Use dense wavelength division multiplexing (DWDM) digital return transmitters in hub-to-headend architectures. What is channel bonding? correct answers A 3.0 revision to DOCSIS that significantly increases upstream and downstream transport data rates.