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Chapter 6 Fiber

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Technician
eric rinehart
Quiz by eric rinehart, updated more than 1 year ago More Less
eric rinehart
Created by eric rinehart almost 10 years ago
eric rinehart
Copied by eric rinehart almost 10 years ago
eric rinehart
Copied by eric rinehart almost 10 years ago
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Resource summary

Question 1

Question
What are the 2 key components of an optical fiber?
Answer
  • Core & Cladding
  • Core & Acrylate
  • Cladding & Acrylate
  • Core & Buffer

Question 2

Question
The refractive index of the fiber core is higher than that of the cladding
Answer
  • True
  • False

Question 3

Question
A micrometer is
Answer
  • 1 billionth of a meter
  • 1 thousandth of a meter
  • 1 millionth of a meter

Question 4

Question
Which fiber is most common for backbone & horizontal runs within buildings and campus environments
Answer
  • Multimode
  • Singlemode
  • OM2
  • OM1

Question 5

Question
What is the diameter of the cladding in multimode fiber cable
Answer
  • 50um
  • 125um
  • 62.5um
  • 250um

Question 6

Question
What is the distance limitation of multimode fiber
Answer
  • 2,000 meters
  • 3,000 meters
  • 1,000 meters
  • 10,000 meters

Question 7

Question
Which fiber supports wavelengths of 1310nm, 1490nm, 1550nm & 1625nm
Answer
  • Singlemode
  • Multimode

Question 8

Question
What is the distance limitation of singlemode fiber
Answer
  • 2,000 meters
  • 3,000 meters
  • 5,000 meters
  • 10,000 meters

Question 9

Question
Which fiber supports wavelengths of 850nm and 1300nm
Answer
  • Multimode
  • Singlemode

Question 10

Question
Which fiber generally uses LED and VCSEL light sources
Answer
  • Multimode
  • Singlemode

Question 11

Question
What is the diameter of the acrylate coating in fiber cable
Answer
  • 50um
  • 125um
  • 250um
  • 100um

Question 12

Question
What is the most common tight buffer diameter
Answer
  • 900um
  • 250um
  • 3mm

Question 13

Question
Tight buffer fiber is only installed in multimode fiber
Answer
  • True
  • False

Question 14

Question
Which type of fiber requires a furcation kit
Answer
  • Tight Buffer
  • Multimode
  • Loose Tube
  • Singlemode

Question 15

Question
This type of fiber consists of up to 24 strands bundled together in a single line that is color coded
Answer
  • Ribbon
  • Air blown
  • Tight buffer
  • Loose tube

Question 16

Question
Air-blown systems are designed & manufactured for an expected operating lifetime of how many years
Answer
  • 20
  • 30
  • 10
  • 15

Question 17

Question
There is no mandatory standard to identify the color coding for fiber
Answer
  • True
  • False

Question 18

Question
According to standards, horizontal fiber cable is normally ____________
Answer
  • Multimode
  • Singlemode
  • Tight buffer
  • Loose tube

Question 19

Question
What is the minimum bend radius of a fiber cable, with up to 4 strands, during installation
Answer
  • 1 inch
  • 2 inch
  • 4 x diameter of cable
  • 10 x diameter of cable

Question 20

Question
What is the minimum bend radius of a fiber cable, with up to 4 strands, at rest
Answer
  • 1 inch
  • 2 inch
  • 4 x diameter of cable
  • 10 x diameter of cable

Question 21

Question
What is the minimum bend radius of interbuilding fiber during installation
Answer
  • 10 x diameter of cable
  • 15 x diameter of cable
  • 20 x diameter of cable

Question 22

Question
What is the minimum bend radius of a fiber backbone cable at rest
Answer
  • 15 x diameter
  • 10 x diameter
  • 20 x diameter

Question 23

Question
What is the minimum bend radius of an intrabuilding fiber during installation
Answer
  • 10 x diameter
  • 15 x diameter
  • 20 x diameter

Question 24

Question
Which test instruments can be used to test fiber while it is still on the reel (select all correct)
Answer
  • OLTS
  • VFL
  • OTDR

Question 25

Question
Which fiber test instrument does not require access to both ends of the fiber while testing on the reel
Answer
  • VFL
  • OTDR
  • OLTS

Question 26

Question
It is recommended to order innerduct without a pull sting preisntalled
Answer
  • True
  • False

Question 27

Question
(2) 1.5 inch and (1) 1 inch innerducts are recommended to be placed inside what size conduit
Answer
  • 3 inch
  • 2 inch
  • 4 inch
  • 6 inch

Question 28

Question
The service loop is used to relieve all tension of the fiber cable
Answer
  • True
  • False

Question 29

Question
How much horizontal fiber should be left at the work area
Answer
  • 1 meter
  • 2 feet
  • 18 inches
  • 12 inches

Question 30

Question
How much fiber slack should be left in a cabinet within a TR
Answer
  • 10 meters
  • 3 feet
  • 1 meter
  • 3 meters

Question 31

Question
When blowing fiber, what carries the cable down the tube
Answer
  • fluid drag
  • air pressure
  • vacuum

Question 32

Question
Air blown fiber shall not be used for outside plant
Answer
  • True
  • False

Question 33

Question
Which of the following are basic tests to verify each tube prior to blowing fiber (select all correct)
Answer
  • airflow testing
  • pressure testing
  • continuity testing

Question 34

Question
What is the typical air pressure when blowing fiber
Answer
  • 150-220psi
  • 150-200psi
  • 100-150psi
  • 200-225psi

Question 35

Question
Which splicing method has a low consumable cost
Answer
  • fusion
  • mechanical

Question 36

Question
Reflectance may be a concern with which type of splicing method
Answer
  • fusion
  • mechanical

Question 37

Question
How much fiber typically should be in a splice tray
Answer
  • 3 feet
  • 1-2 meters
  • 1-3 meters
  • 1 meter

Question 38

Question
Identify this fusion
Image:
299ce875-e65e-4460-9656-a48b897a1d79 (image/jpeg)
Answer
  • fuse time too long
  • autofeed too low
  • autofeed too high
  • fuse current too hot

Question 39

Question
Identify this fusion
Image:
fb94f7a7-c753-440a-8437-110a8b09f7d6 (image/jpeg)
Answer
  • fuse current too hot
  • autofeed too high
  • good splice
  • autofeed too low

Question 40

Question
Identify this fusion
Image:
1a0b3a20-7685-426e-bd83-9df12f57c0ff (image/png)
Answer
  • autofeed too high
  • good splice
  • fuse time too long
  • fuse current too hot

Question 41

Question
Identify this fusion
Image:
54ba5bc4-086b-4a30-8554-3baf4006b133 (image/png)
Answer
  • autofeed too low
  • fuse time too long
  • autofeed too high
  • good splice

Question 42

Question
Identify this fusion
Image:
19cf719e-332d-4c6a-95dc-4d72bbe65963 (image/png)
Answer
  • good splice
  • autofeed too high
  • autofeed too low
  • fuse time too long

Question 43

Question
What is the maximum splice loss regardless of the methodology
Answer
  • .3dB
  • .1dB
  • .75dB
  • 1.5dB

Question 44

Question
What is the curing cycle for heat cured connectors
Answer
  • 20 minutes
  • 10 minutes
  • 5 minutes
  • 15 minutes

Question 45

Question
Adhesive hardening when terminating anaerobic connectors takes how long
Answer
  • 10-20 seconds
  • 15 seconds
  • 1 minute
  • 5-10 seconds

Question 46

Question
What is the size of the primary acrylate
Answer
  • 125um
  • 250um
  • 245um
  • 5um

Question 47

Question
What is the #1 reason for troubleshooting in optical networks
Answer
  • contamination
  • core alignment
  • poor terminations

Question 48

Question
What is the power range for microscopes to view the end face of an optical fiber connector
Answer
  • 100x-800x
  • 100x-200x
  • 200x-400x

Question 49

Question
This tool is used to inspect the radius of curvature, offset of polish & optical fiber height
Answer
  • VFL
  • Interferometer
  • OLTS
  • OTDR

Question 50

Question
This tool can determine end-to-end attenuation & distance to a point of high attenuation during pre-installation testing
Answer
  • OTDR
  • OLTS
  • VFL
  • Interferometer

Question 51

Question
Acceptance testing of optical fiber is most often performed with which tester
Answer
  • VFL
  • OLTS
  • OTDR
  • Interferometer

Question 52

Question
For singlemode fiber, out-of-band testing may be accomplished at the _____ nm window
Answer
  • 1625
  • 1550
  • 1310
  • 1490

Question 53

Question
What is the worst acceptable loss for a mated pair
Answer
  • .75dB
  • .5dB
  • .3dB
  • 1.0dB

Question 54

Question
95% of mated pairs shall be better than ____dB loss
Answer
  • .75dB
  • .5dB
  • .3dB

Question 55

Question
There is currently no maximum bandwidth for singlemode optical fiber
Answer
  • True
  • False

Question 56

Question
What is the recommended power range for microscopes to view the end face of an optical fiber connector
Answer
  • 100x-200x
  • 100x-800x
  • 200x-400x

Question 57

Question
This tester uses Rayleigh scattering & Fresnal reflection to measure the characteristics of an optical fiber
Answer
  • OTDR
  • OLTS
  • VFL

Question 58

Question
Shorter wavelengths of light exhibit greater amounts of attenuation because of Rayleigh scattering
Answer
  • True
  • False

Question 59

Question
Longer wavelengths are more sensitive to bending loss and will allow light to exit out of the fiber core more than shorter wavelengths
Answer
  • True
  • False

Question 60

Question
What are the most common connectors for multimode fiber (select all correct)
Answer
  • ST
  • SC
  • LC
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