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CERTIFIED FIBER OPTICS FINAL EXAM, FIBER
OPTICS FINAL TEST, FIBER INSTALLATION AND
TESTING, OPTICAL FIBER CERTIFICATION, FIBER
TROUBLESHOOTING, VERIFIED ANSWERS, FIBER
OPTICS TECHNICIAN EXAM
A Fiber optic installer should allow for extra ____ when installing a cable to allow for future changes or restorations in the network design. - CORRECT ANSWER✔✔ Slack ________ plant cables are permitted to be installed in the building as long as the cable dose not exceed 15m(50 ft) - CORRECT ANSWER✔✔ Outside Multimode fiber optic systems typically operate at____ and ____ using a _____ source - CORRECT ANSWER✔✔ LED single mode fiber optic systems typically operate at ______ and ______ source - CORRECT ANSWER✔✔ 850 - 1310, 1300-1550, LED Laser (LAN's) typically used _______ sources and Wide Area Networks typically used________sources - CORRECT ANSWER✔✔ LED, Laser
The newest laser optimized multimode optical fiber Is designed for 1 Gigabit per second or greater data rates in communication system utilizing an___ nm vertically cavity surface-emitting laser(VCSEL) - CORRECT ANSWER✔✔ 850 the applications of optical fiber communications have increased at a rapid rate, since the first commercial instillation of a fiber optic system in the - CORRECT ANSWER✔✔ 1970's The loss of a signal strength is called - CORRECT ANSWER✔✔ attenuation A single binary digit Is called a - CORRECT ANSWER✔✔ Bit An eight bit group is called a - CORRECT ANSWER✔✔ Bite The _______ is used to express gain or loss in a fiber optic system or component - CORRECT ANSWER✔✔ Decibel 1mw of power is ___dbm - CORRECT ANSWER✔✔ 0 dbm
The refractive index profile describes the relation between the indices of ____ and ______.The core of the multimode optical fiber has the highest refractive index. - CORRECT ANSWER✔✔ Core, Cladding What makes up an optical fiber - CORRECT ANSWER✔✔ core, cladding, coating mode is another name for - CORRECT ANSWER✔✔ Path single mode fiber have a _____core than multimode fibers - CORRECT ANSWER✔✔ smaller the part of the multimode optical fiber that functions as a mode filter is the______ - CORRECT ANSWER✔✔ cladding The standard core diameters of multimode fiber are___ and ___um. - CORRECT ANSWER✔✔ 50nm, 62. _______strength is the ability of a fiber to be stretched or pulled without breaking - CORRECT ANSWER✔✔ Tensile
The Tensile strength of a fiber is_______ when it is bent - CORRECT ANSWER✔✔ Refracted The number of modes in an optical fiber decreases as the increases - CORRECT ANSWER✔✔ Wavelength Bandwidth is and effective indication of the rate at which____ can be sent - CORRECT ANSWER✔✔ Intelligence Graded index fibers uses numerous concentric layers of glass to reduce______ - CORRECT ANSWER✔✔ Modal Dispersion The number of modes in an optical fiber ____as the core diameter decreases - CORRECT ANSWER✔✔ Decreases in accordance with the (ISO) (IEC) 1801 specifications, the was designed for use with OM1 and OM2 fibers - CORRECT ANSWER✔✔ LED
Material safety data sheets are ____ when chemicals are used - CORRECT ANSWER✔✔ Required NA mismatch is an___ factor - CORRECT ANSWER✔✔ Intrinsic Lateral displacement and end separation are ____ factors - CORRECT ANSWER✔✔ Extrensic __________ control includes having the fiber face perpendicular to the fiber axis, which is function or proper fiber cleaning or polishing - CORRECT ANSWER✔✔ Angular Misalignment The _______ is most important requirement for a good mechanical and/or fusion slice - CORRECT ANSWER✔✔ Cleaver A Fusion slicer uses and ___ to heat fibers to about____ degrees Celsius. - CORRECT ANSWER✔✔ electric, 2000 degrees The maximum loss for an indoor mechanical or fusion slice per ANSI?TIA- 568 - C.3 is ___ dB. - CORRECT ANSWER✔✔ 0.30,
List the Five desirable features for a fiber optic connector or splice. - CORRECT ANSWER✔✔ Concentricity, low loss, Easy Inser, Economical, repeatability List three types of factors that causes loss in fiber optic interconnections. - CORRECT ANSWER✔✔ Intrinsic, Extrinsic, system The three types of Small Form Factor (SFF) connector styles are - CORRECT ANSWER✔✔ LC, MC-RJ, MPO The connector strain relief and adapter housing for an OM1 62.5/125 um fiber is ____ - CORRECT ANSWER✔✔ serge ferrules may be made up of _____,_____, and _____ - CORRECT ANSWER✔✔ ceramic, plastic, steel Ceramic ferrules are made of either______ oxide or _______ oxide - CORRECT ANSWER✔✔ Aluminum, Zironium
the array connector is typically attached to a ____ cable - CORRECT ANSWER✔✔ Ribbon The cladding is typically bonded to the ____ with the proxy during the assembly process - CORRECT ANSWER✔✔ Ferrul Prior to testing all connections should be ______ - CORRECT ANSWER✔✔ Cleaned __________ permit close-up inspection of polishing finishes - CORRECT ANSWER✔✔ I Microscope The Main parts of a fiber optic cable are the optical fiber, - CORRECT ANSWER✔✔ Buffer strength member, Jacket Unless otherwise specified, the outer jacket of a laser optimized multimode fiber containing one fiber (LOMMF) (50/125) premises cable containing only on fiber shall be - CORRECT ANSWER✔✔ Aqua in color
________ handle the tensile stresses applied to the cable so the fiber is not damaged - CORRECT ANSWER✔✔ Strength members A_____ cable is one that runs vertically between the floors of building - CORRECT ANSWER✔✔ Riser Plenum cables are fire retardant and____ - CORRECT ANSWER✔✔ Low Smoke Breakout cables have several individual ________cables inside an outer jacket - CORRECT ANSWER✔✔ simplex _______ cables have several individual tight buffered fibers inside and outer jacket - CORRECT ANSWER✔✔ Distribution ___________Kits route loose tube 250um buffered fibers into 900um tight buffer fibers tubes ready for connectorization - CORRECT ANSWER✔✔ Fan Out Kit OFNR is and optical fiber - CORRECT ANSWER✔✔ non conductive Riser
the armor in an armored fiber optic cable protectes the cable from - CORRECT ANSWER✔✔ Rodants single mode cordage is typically _____ or _____ in color - CORRECT ANSWER✔✔ orange or slate list the 12 colors that comprise the TIA/EIA 598 B - CORRECT ANSWER✔✔ blue, orange, green, brown, slate, white,red, black, yellow,violet, rose,aqua Loose tube/loose buffers fibers are typically filled with gel, tape, and powder and used - CORRECT ANSWER✔✔ outdoor ______may be substituted for OFNR - CORRECT ANSWER✔✔ OFNP (NEC) is published every ____ years by the NFPA - CORRECT ANSWER✔✔ 3 years
NEC article ______ requires that all communications systems entering a building be bonded to the buildings grounding electrode system - CORRECT ANSWER✔✔ 250 A fiber optic installer must follow ____,____ and local building codes when installing fiber optic cables. - CORRECT ANSWER✔✔ Federal, State The spectral width of an LED is _____ spectral width of a laser - CORRECT ANSWER✔✔ Wider a Laser has a____ output then an LED - CORRECT ANSWER✔✔ Higher stimulated emission is the process where each photon has the same ___, phase relationship, and ____ as the first photon - CORRECT ANSWER✔✔ wavelength , Direction Fiber optic receivers typically use a _____to detect light - CORRECT ANSWER✔✔ Photodiode
list 7 advantages of fiber optics over copper - CORRECT ANSWER✔✔ wide bandwidth, low loss, electromagnetic immunity, light weight, small size, safety, security Unlike copper cables fiber optic cables are immune to - CORRECT ANSWER✔✔ Radiation A typical Fiber optic cable is __ lighter than a copper cable - CORRECT ANSWER✔✔ 9 times Since optical fiber is a ________ it presents no spark or hazard - CORRECT ANSWER✔✔ dielectric Fiber optics is a very secure transmission medium because it does not _____ energy that can be received by an antenna - CORRECT ANSWER✔✔ Radiate Light emitting Diodes and lasers typically use red light in the ____range for diagnostics and trouble shooting. - CORRECT ANSWER✔✔ 635 - 650
One of the most simple, quick and accurate tests to identify a break in an optical fiber is with a _________ - CORRECT ANSWER✔✔ Fault Isolater Loss in a fiber optic cable can be measured with a ____ and _____ - CORRECT ANSWER✔✔ Fos , FOM A ________ is a convenient way to analyze and quantify losses in a fiber optic link. - CORRECT ANSWER✔✔ Power Budget The _______ meter requires the fiber optics installer to conduct a periodic and traceable reference calibration - CORRECT ANSWER✔✔ optical power OTDR stand for - CORRECT ANSWER✔✔ Optical Time Domain Reflectometer the correct _____ or ________ required for an OTDR to make accurate measurements. - CORRECT ANSWER✔✔ index and refractions An OTDR relies on the ________ of light that occurs in an optical fiber. - CORRECT ANSWER✔✔ Back seatter
