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Fiber Optic Cable Certification Exam Questions, Exams of Telecommunications Engineering

Cambridge Technical InstituteTelecommunications Engineering

A series of questions and answers related to fiber optic cables, covering topics such as fiber types, cable design, installation, termination, testing, and troubleshooting. It provides a comprehensive overview of fiber optic cable technology and its applications in various networking environments.

Typology: Exams

2024/2025

Available from 12/10/2024

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FOA CFOT Certification Exam v11 Questions
1.A fiber optic inspection microscope can increase the danger of high
pow- ered light sources by focusing the light coming out of a fiber into
your eye. True or False?: True
2.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
3.When we say 62.5/125 fiber, what does "62.5" mean?: core size, the
diameter in microns
4.When we say 50/125 fiber, what does "125" mean?: cladding size, the
diameter in microns
5.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
6.In-multimode fiber, the attenuation (reduction in optical power) of the
fiber is
at 850 nm than at 1300 nm.: Higher
7.Which of the following represents a singlemode (smaller core size)
fiber size?: 9/125 micron
8.Singlemode fiber has bandwidth than multimode fiber.: greater
9.Most plastic optical fibers are .: large core step-index
10.When you strip singlemode or graded index multimode mode glass
fiber, you are removing the .: Primary buffer coating
11.The proper method of pulling optical fiber cables is to attach the pull
wire or tape to the of the cable.: Strength members
12. Acc
ording to the references, hybrid cables are cables that contain .: -
Both singelmode and multimode optical fibers
13.What type of fiber cable design allows for large numbers of fibers
with ultra-high density, small size (diameter) and lower cost?: ribbon
14. According to the references, composite cables refer to cables that
contain
>: both optical fibers and copper conductors
15.Which optical fiber cables must be grounded?: all cables that contain
metallic elements
16.Fiber optic cable for use inside a building must .: Be rated to
meet the requirements of local building and fire codes
17.Optical fiber cable with a orange colored jacket generally indicates
pf3
pf4
pf5
pf8

Partial preview of the text

Download Fiber Optic Cable Certification Exam Questions and more Exams Telecommunications Engineering in PDF only on Docsity!

FOA CFOT Certification Exam v11 Questions

  1. A fiber optic inspection microscope can increase the danger of high pow- ered light sources by focusing the light coming out of a fiber into your eye. True or False?: True
  2. 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
  3. When we say 62.5/125 fiber, what does "62.5" mean?: core size, the diameter in microns 4.When we say 50/125 fiber, what does "125" mean?: cladding size, the diameter in microns
  4. 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
  5. In-multimode fiber, the attenuation (reduction in optical power) of the fiber is at 850 nm than at 1300 nm.: Higher
  6. Which of the following represents a singlemode (smaller core size) fiber size?: 9/125 micron 8.Singlemode fiber has bandwidth than multimode fiber.: greater 9.Most plastic optical fibers are .: large core step-index 10.When you strip singlemode or graded index multimode mode glass fiber, you are removing the .: Primary buffer coating 11.The proper method of pulling optical fiber cables is to attach the pull wire or tape to the of the cable.: Strength members 12. Acc ording to the references, hybrid cables are cables that contain .: - Both singelmode and multimode optical fibers 13.What type of fiber cable design allows for large numbers of fibers with ultra-high density, small size (diameter) and lower cost?: ribbon 14. According to the references, composite cables refer to cables that contain >: both optical fibers and copper conductors 15.Which optical fiber cables must be grounded?: all cables that contain metallic elements 16.Fiber optic cable for use inside a building must .: Be rated to meet the requirements of local building and fire codes 17.Optical fiber cable with a orange colored jacket generally indicates

the cable contains .: Multimode fiber 18.Premises cable jackets are usually color-coded in what color to indicate singlemode fiber?: Yellow 19.Premises cable jackets are usually color-coded in what color to indicate laser-optimized 50/125 OM3 or OM4 fiber?: Aqua 20.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)

21. In a loose tube cable, a gel or absorbent tape or powder is normally used .: To prevent water from entering the cable 22.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 23.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 24.When pulling cables, the minimum bend radius under tension is generally specified as .: 20 times the cable diameter 25.Cable ties used on fiber optic cables .: Can harm cables if too tight, so they should be hand-tightened. 26.Fiber optic joints (connectors or splices) should have .: low loss, minimal reflectance and high mechanical strength 27.To reduce as well as loss, the end of a connector ferrule is polished to a PC (physical contact) finish.: Reflectance 28.Factory terminations, such as used for making patchcords, generally use what method of attaching the connector?: Epoxy/polish 29.According to the references, the connector in the following list with the best or lowest reflectance would be the .: SC-APC (Angled Polished Con- nector) 30.Splices are most often used for .: A permanent joint between two fibers 31.If you need to permanently join two fibers together with the lowest loss and least amount of reflectance, which of the following should you choose?: fusion splice 32.Mass fusion splicing is normally used on what style of cable?: ribbon cable 33.Prior to cable plant acceptance or system turn-up, a(n) is used to measure the cable plant insertion loss to ensure it is within the loss budget.: Light source and power meter (LSPM or OLTS)

46.Is smaller in singlemode than multimode fiber: Core 47.Is stripped off for termination or splicing: Primary Buffer Coating

  1. The outside diameter of this part of the fiber is the same for most mode single- and m Singlemode: Multi-mode graded index: Multi-mode step index: 52.Telecom outside plant: Singlemode 53.Telecom FTTx: Singlemode 54.CATV hybrid fiber coax network: Singlemode 55.LAN fiber to the desk: Multimode Graded-Index 56.Consumer digital audio: Plastic Optical Fiber (POF) 57.Distribution cable: Has multiple buffered fiber cables (about 12 individual ca- bles), and it does have strength members 58.Breakout cable: Has multiple simplex cables (about 12 or more individual cables), but it does NOT have strength members 59.Loose Tube cable: Has a buffered fiber, strength members and water blocking substance 60.Zipcord cable: Has 2 buffered fibers and strength members 61.Resistance to water damage: Gel-filled and blocked cable 62.Can be installed indoors in air handling areas: Plenum rated 63.Rodent resistance: Armored cable 64.Must be more than 20 times cable diameter: Minimum recommended bend radius under pulling tension 65.Must be more than 10 times cable diameter: Minimum recommended long term bend radius 66.INDOOR, short, dry conduit runs, risers and plenums terminated inside junction boxes: Distribution cable 67.High fiber count in small diameter for metro or long distance: Ribbon cable 68.Patch cords and backplanes: Simplex and zip cord tight buffer 69. Ideal for outside plant trunk applications inside innerduct or conduit: -

rcle s ethe 70.Building cable for conduit, riser and plenum runs without requiring junc- tion boxes: Breakout cable 71.Direct buried outside plant: Armored loose tube cable

72. ST: 73. SC: 74. LC: 75. MTP: 76.Insertion loss (Which Tool(s) do you use?): Light source and power meter 77.Continuity, fiber or cable tracing, duplex connector polarity (Which Tool(s) do you use?): Visual fiber tracer 78.Source or receiver power (Which Tool(s) do you use?): Fiber optic power meter 79.Connector faults (scratches, polish, dirt) (Which Tool(s) do you use?): In- spection microscope 80.Fault location, splice loss, length (Which Tool(s) do you use?): OTDR 81.Continuity, fiber tracing, fault location close to end of a cable (Which Tool(s) do you use?): Visual fault locator 82.Cable to test: Cable in the middle wrapped multiple times in ci 83.Connector mating adapter: Device that connect two wires tog

mber

  1. Launch cable: Cable connected to the light source
  2. Light source: Device at the end shining a light or laser
  3. Power meter: Device taking measurements and giving out nu
  4. Receive cable: Cable connected to the power meter 88.Connector, showing loss and back reflection: High spike (upside down V) in the middle of the graph 89.Distance scale: On the graph it will be X-axis (left to right) on the bottom side 90.End of the fiber: Zig-Zag lines at the end of the graph 91.Initial pulse and dead zone: High spike of energy (upside down U) at the beginning of the graph 92.Loss scale: On the graph it will be the Y-axis (up and down) on the left side 93.Splice loss: A drop of energy (like a step) in the middle of the graph 94.Fiber Size: um (microns) 95.Wavelength: nm (nanometers) 96.Bandwidth: MHz or GHz (megahertz or gigahertz) 97.Loss: dB (decibels) 98.Absolute power: dBm (decibels per milliwatts) 99.Cable jacket outside diameter: mm or in (millimeters or inches)
  5. Cable Length: ft or m (feet or meters)