Download FOA CFOT Certification Exam V11 2025-2026 Questions with Correct and Highly Rated Answers and more Exams Nursing in PDF only on Docsity!
FOA CFOT Certification Exam V 11 2025 - 2026
Questions with Correct and Highly Rated
Answers (Score A)-Metropolitan Community
College
Which type of cable is best suited for indoor installation when fibers ar to be directly terminated inside a patch panel with adhesive/polish or prepolished splice connectors? tight buffer distribution cable What type of cable may require installation of a breakout kit (also called a furcation or fan out kit) for termination? loose tube (loose buffer) cable When pulling cables, the minimum bend radius under tension is generally specified as ______. 20 times the cable diameter
Cable ties used on fiber optic cables ____. Can harm cables if too tight, so they should be hand-tightened. Fiber optic joints (connectors or splices) should have ____. low loss, minimal reflectance and high mechanical strength To reduce _____ as well as loss, the end of a connector ferrule is polished to a PC (physical contact) finish. Reflectance Factory terminations, such as used for making patchcords, generally use what method of attaching the connector? Epoxy/polish According to the references, the connector in the following list with the best or lowest reflectance would be the ____. SC-APC (Angled Polished Connector) Splices are most often used for _____. A permanent joint between two fibers
Which of the following parameters cannot be measured by OTDRs (optical time domain reflectometers) in fiber optic networks. Transmitter and receiver power For safety, a fiber optic technician or installer should always wear ______ when working with optical fiber. Eye protection During fiber optic installations, the most common danger is caused by ______. Fiber scraps or shards from stripping, cleaving, splicing and termination The link loss budget analysis of a cable plant like the diagram shown is done to _________. All of these choices (Ensure the intended communications system will work on the cable plant system, Provide a pass/fail loss value for comparison to test values, Ensure the cable plant has been properly installed) A link loss budget should be done for every cable plant installation during the ______ phase of a project. Design
The loss of connector on each end of the cable plant ______. Are always included in the loss budget Cladding Material around the center tube (Look at diagram) Core Center tube (Look at diagram) Primary Buffer Coating Material around the core and cladding, it gives the fiber its distinct color (Blue, Red, Agua, etc) Traps light in the core to reduce attenuation Cladding
Telecom FTTx Singlemode CATV hybrid fiber coax network Singlemode LAN fiber to the desk Multimode Graded-Index Consumer digital audio Plastic Optical Fiber (POF) Distribution cable Has multiple buffered fiber cables (about 12 individual cables), and it does have strength members
Breakout cable Has multiple simplex cables (about 12 or more individual cables), but it does NOT have strength members Loose Tube cable Has a buffered fiber, strength members and water blocking substance Most plastic optical fibers are _____. large core step-index When you strip singlemode or graded index multimode mode glass fiber, you are removing the ____. Primary buffer coating The proper method of pulling optical fiber cables is to attach the pull wire or tape to the ____ of the cable. Strength members
Optical fiber cable with a orange colored jacket generally indicates the cable contains _____. Multimode fiber Premises cable jackets are usually color-coded in what color to indicate singlemode fiber? Yellow Premises cable jackets are usually color-coded in what color to indicate laser- optimized 50/125 OM3 or OM4 fiber? Aqua When pulling long lengths of cable in conduit or innerduct, you may need to ____. Any or all of these as appropriate (Pull form the center to the ends, Use a breakaway swivel or monitor tension, Lubricate the cable) In a loose tube cable, a gel or absorbent tape or powder is normally used _____. To prevent water from entering the cable A fiber optic inspection microscope can increase the danger of high powered light sources by focusing the light coming out of a fiber into your eye. True or False?
True A fiber optic power meter measures absolute power in dBM (dB referenced to 1 mw) and, when used with a light source, can measure insertion loss expressed in dB. True or False? True When we say 62.5/125 fiber, what does "62.5" mean? core size, the diameter in microns When we say 50/125 fiber, what does "125" mean? cladding size, the diameter in microns OM3 and OM4 multimode fiber with a 50/125 micron core are now a popular option in premises cabling systems because they _____. Are "laser optimized" which gives more distance capability with gigabit networks using laser sources In-multimode fiber, the attenuation (reduction in optical power) of the fiber is _____ at 850 nm than at 1300 nm. Higher
Rodent resistance Armored cable Must be more than 20 times cable diameter Minimum recommended bend radius under pulling tension Must be more than 10 times cable diameter Minimum recommended long term bend radius INDOOR, short, dry conduit runs, risers and plenums terminated inside junction boxes Distribution cable High fiber count in small diameter for metro or long distance Ribbon cable Patch cords and backplanes Simplex and zip cord tight buffer
Ideal for outside plant trunk applications inside innerduct or conduit Loose tube (buffer) gel-filled Building cable for conduit, riser and plenum runs without requiring junction boxes Breakout cable Direct buried outside plant Armored loose tube cable ST SC LC MTP
Cable to test Cable in the middle wrapped multiple times in circles Connector mating adapter Device that connect two wires together Launch cable Cable connected to the light source Light source Device at the end shining a light or laser Power meter Device taking measurements and giving out numbers Receive cable Cable connected to the power meter
Connector, showing loss and back reflection High spike (upside down V) in the middle of the graph Distance scale On the graph it will be X-axis (left to right) on the bottom side End of the fiber Zig-Zag lines at the end of the graph Initial pulse and dead zone High spike of energy (upside down U) at the beginning of the graph Loss scale On the graph it will be the Y-axis (up and down) on the left side Splice loss A drop of energy (like a step) in the middle of the graph
Cable Length ft or m (feet or meters)
