Fiber Optic Questions With Verified Answers

A fiber optic inspector microscope can increase the danger of high powerd light source by focusing the light out of a fiber into your eyes. - Answer True A fiber optic power meter measures absolute power in dBm (dB reference to 1 mw) and when a light source measures insertions loss in dB. - Answer True Confining light in a material by surrounding it by another material with lower refractive index is the phenomenon of - Answer Total internal reflection The largest cause of attenuation in am optical fiber is - Answer Scattering When we say 62.5/125 fiber what does "62.5" means? - Answer Core size, diameter in microns When we say 50/125 fiber what does "125" mean? - Answer Cladding size the diameter in microns An older multimode fiber design with a 50/125 micron core is now option in premises cabling system because it - Answer Has a higher bandwidth which gives more distance capability with gigabit network In multimode fiber the attenuation of the fiber is __________ at 850 nm that's 1300 nm - Answer Higher Which of the following represent a singlemode fiber size ? - Answer 9/125 Singlemode fiber has ______ bandwidth in both multimode and singlemode fiber - Answer Greater What form of dispersion affect bandwidth in both multimode and singlemode fiber - Answer Chromatic dispersion Most plastic optical fiber are - Answer Large core step-index When you strip singlemode or graded index multimode mode glass fiber you are removing the - Answer Primary buffer coating The outermost layer of protection for an optic fiber cable is - Answer The jacket The proper method of pulling optical fiber is to attach the pull wire or tape to the - Answer Strength members According to the text HYBRIDcables refer to cable that contain - Answer Both singlemode and multimode optical fibers What type of fiber cable design allows for large number of fibers with ultra high density low cost small size diameters? - Answer Ribbon When flexibility and ease of termination are priory the type of cable best suited is - Answer Tight buffer What standard covers flammability requirements of fiber optic cables for installation in premises application - Answer NEC 770.50 According to the text Composite cable refer to cable that contain - Answer Both optical fiber and copper must be grounded Which optical fiber cable must be grounded - Answer All optical cable that contain metal Which NEC rated cable can be used in air handling space of building - Answer OFNP(US) Optical fiber cable with a orange colored jacket generally indicates the cable contain - Answer Multimode fiber Premises cable jacket are usually color-code in what color to indicate singlemode fiber? - Answer yellow The minimum bend radius for cable while pulling under tension during installation is - Answer 20 times the cable diameter When pulling long length of cable in conduit or inner duct you may need to - Answer Any or all of these as appropriate Use a breakaway swivel or monitor tension Lubrica the cable Pull from the center to the end. In a loose tube buffer cable gel or absorbent tape is normally uesd - Answer To prevent water from entering the cable What type of cable may require installation of breakout kit also called a function or fan out kit for termination - Answer Loose tube (loose buffer) cable Cable Ties used on fiber optic cables - Answer Can harm cables it too tight so they should be hand_tightened