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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 9 years ago
eric rinehart
Copied by eric rinehart almost 9 years ago
eric rinehart
Copied by eric rinehart almost 9 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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