FOA- Fiber Optic Certification Exam T/F
Questions & Answers
50/125 microns represents a single mode fiber size - ANSWERFalse- Single mode fiber
is 8/10 microns
AnswerMultimode Fiber has a greater bandwidth than single mode fiber -
ANSWERFalse - Single mode has less dispersion: more bandwidth
AnswerPulling from the center to the ends is a way of pulling long cables in conduits -
ANSWERTrue
AnswerLarge core step-index is the most common in plastic optical fiber -
ANSWERTrue
AnswerNo fiber optic cable needs to be grounded - ANSWERFalse - any electronic
material must be grounded
AnswerThe cladding is the portion of the fiber you are removing during stripping -
ANSWERThe buffer is what you take off
AnswerSingle mode fiber cables are usally color coded in gray - ANSWERFase -
Yellow
AnswerLoose tube may require the instalation of what - ANSWERBreakout kit
AnswerComposite cables have only fiber - ANSWERfalse- they also have copper
AnswerOrange cable contains multimode fiber - ANSWERTrue
AnswerThe testing phase of a project is when you do loss/budget anaylisis -
ANSWERFalse - should be done in the planning stage
AnswerDistribution cables use mass fusion splicing - ANSWERFalse- Ribbion cable
uses mass fusion
AnswerThe reference cables that are used during testing must be chosen for their low
loss characteristics - ANSWERTrue
AnswerTelecom FTTx is typically single mode fiber - ANSWERTrue
AnswerUnit for measuring bandwidth - ANSWERGHz
, AnswerUnit for measuring absoulute power - ANSWERdBm
AnswerUnit for measuring outside jacket - ANSWERmm or inches
Answerunit for measuring fiber size - ANSWERym or microns
AnswerFiber optic joints should have - ANSWERlow loss and high mechanical strength
AnswerConnector - ANSWERnon permanent connections
AnswerFusion splicing - ANSWERpermanent singlemode connection
Answermechanical splicing - ANSWERrestoration or multimode joints
AnswerMost singlemode field terminations are made by - ANSWERfusion splicing a
factory pigtail onto the cable
AnswerWith hot melt connectors, the oven is used for - ANSWERmelt the adhesive to
allow fiber insertion
Answerfiber is pulled on the? - ANSWERStrength Member
AnswerFor long cable pulls, - ANSWERthe pull should be split up into two or more
stages.
AnswerInstalled fiber must be - ANSWERdocumented, tested, and terminated
correctly.
AnswerWhat are the three regions of the fiber structure - ANSWERCore - Buffer -
Cladding
AnswerWhat causes modal dispersion ? - ANSWERIn Multi mode fiber the rays of light
reaching the destination at different times causing attenuation.
AnswerWhat is the index of refraction? - ANSWERThe index of refraction of a material
is the ratio of the speed of light in vacuum to that in the material. In other words it is a
measure of how much the speed of light shows down after it enters the material.
AnswerWhat are the two basic fiber optic cable designs? - ANSWERSingle-Mode -
Multi-Mode
AnswerWhat are the two types of splices? - ANSWERFusion Splice, Mechanical Splice
Questions & Answers
50/125 microns represents a single mode fiber size - ANSWERFalse- Single mode fiber
is 8/10 microns
AnswerMultimode Fiber has a greater bandwidth than single mode fiber -
ANSWERFalse - Single mode has less dispersion: more bandwidth
AnswerPulling from the center to the ends is a way of pulling long cables in conduits -
ANSWERTrue
AnswerLarge core step-index is the most common in plastic optical fiber -
ANSWERTrue
AnswerNo fiber optic cable needs to be grounded - ANSWERFalse - any electronic
material must be grounded
AnswerThe cladding is the portion of the fiber you are removing during stripping -
ANSWERThe buffer is what you take off
AnswerSingle mode fiber cables are usally color coded in gray - ANSWERFase -
Yellow
AnswerLoose tube may require the instalation of what - ANSWERBreakout kit
AnswerComposite cables have only fiber - ANSWERfalse- they also have copper
AnswerOrange cable contains multimode fiber - ANSWERTrue
AnswerThe testing phase of a project is when you do loss/budget anaylisis -
ANSWERFalse - should be done in the planning stage
AnswerDistribution cables use mass fusion splicing - ANSWERFalse- Ribbion cable
uses mass fusion
AnswerThe reference cables that are used during testing must be chosen for their low
loss characteristics - ANSWERTrue
AnswerTelecom FTTx is typically single mode fiber - ANSWERTrue
AnswerUnit for measuring bandwidth - ANSWERGHz
, AnswerUnit for measuring absoulute power - ANSWERdBm
AnswerUnit for measuring outside jacket - ANSWERmm or inches
Answerunit for measuring fiber size - ANSWERym or microns
AnswerFiber optic joints should have - ANSWERlow loss and high mechanical strength
AnswerConnector - ANSWERnon permanent connections
AnswerFusion splicing - ANSWERpermanent singlemode connection
Answermechanical splicing - ANSWERrestoration or multimode joints
AnswerMost singlemode field terminations are made by - ANSWERfusion splicing a
factory pigtail onto the cable
AnswerWith hot melt connectors, the oven is used for - ANSWERmelt the adhesive to
allow fiber insertion
Answerfiber is pulled on the? - ANSWERStrength Member
AnswerFor long cable pulls, - ANSWERthe pull should be split up into two or more
stages.
AnswerInstalled fiber must be - ANSWERdocumented, tested, and terminated
correctly.
AnswerWhat are the three regions of the fiber structure - ANSWERCore - Buffer -
Cladding
AnswerWhat causes modal dispersion ? - ANSWERIn Multi mode fiber the rays of light
reaching the destination at different times causing attenuation.
AnswerWhat is the index of refraction? - ANSWERThe index of refraction of a material
is the ratio of the speed of light in vacuum to that in the material. In other words it is a
measure of how much the speed of light shows down after it enters the material.
AnswerWhat are the two basic fiber optic cable designs? - ANSWERSingle-Mode -
Multi-Mode
AnswerWhat are the two types of splices? - ANSWERFusion Splice, Mechanical Splice
