Fiber Testing and Maintenance Exam
Questions and answers 2025
..
What ..topology ..do ..most ..fiber-to-the-user ..(FTTx) ..networks ..use, ..which
..requires ..greater ..fiver ..color ..code ..management ..in ..its ..documentation? ..- ..ANS
✓✓-Point-to-multipoint ..(P2MP)
Improper ..use ..of ..nylon ..tie ..wraps ..can ..induce ..this ..problem: ..- ..ANS✓✓-
Microbends
What ..are ..potential ..sources ..of ..problems ..in ..aerial ..installations? ..- ..ANS✓✓-
Falling ..branches, ..pole ..attachment ..problems, ..and ..improper ..sag ..and ..loading
..considerations.
During ..installation ..of ..fiber-optic ..cable, ..what ..does ..damage ..to ..the ..cable
..jacket ..cause? ..- ..ANS✓✓-Moisture ..migration ..into ..the ..cable.
In ..a ..fiber-optic ..network, ..- ..ANS✓✓-The ..role ..of ..maintenance ..is ..to
..proactively ..maintain ..network ..tolerances ..and ..recognize, ..locate, ..and ..remedy
..potential ..problems.
A ..fiber-optic ..network ..maintenance ..plan ..should ..be ..developed ..with ..which ..of
..the ..following ..in ..mind? ..- ..ANS✓✓-The ..task ..of ..compiling ..the ..physical
..document ..must ..become ..the ..responsibility ..of ..an ..identifiable ..position ..or
..organization.
What ..is ..the ..best ..way ..to ..prevent ..problems ..in ..outside ..fiber-optic ..splice
..enclosures? ..- ..ANS✓✓-The ..outer ..jacket ..and ..the ..internal ..cable ..structures
..must ..be ..secured ..individually ..to ..protect ..the ..closure ..and ..splice ..trays ..from
..the ..effects ..of ..expansion ..and ..contraction.
The ..troubleshooting ..process ..- ..ANS✓✓-should ..include ..steps ..that ..identify,
..analyze, ..and ..locate ..the ..problem ..as ..well ..as ..diagnose ..its ..source, ..repair ..the
..problem, ..and ..test ..to ..ensure ..the ..problem ..is ..resolved.
, When ..testing ..the ..fiber-optic ..plant, ..- ..ANS✓✓-An ..optical ..power ..meter ..is
..used ..to ..measure ..the ..strength ..of ..light ..signals ..anywhere ..in ..a ..fiber ..system
..where ..a ..connection ..can ..be ..made
As ..changes ..are ..introduced ..to ..a ..fiber-optic ..network, ..- ..ANS✓✓-
Documentation ..must ..be ..updated ..to ..reflect ..the ..new ..configuration ..and
..performance ..data.
As-built ..- ..ANS✓✓-Drawings, ..route ..maps, ..and ..notes ..that ..provide ..an
..accurate ..representation ..of ..a ..network ..and ..its ..key ..points ..in ..order ..to
..simplify ..maintenance ..and ..restoration ..tasks.
System ..margin ..- ..ANS✓✓-The ..amount ..of ..attenuation, ..in ..dB, ..that ..the
..system ..can ..absorb ..before ..the ..system ..fails.
Definition ..of ..Point-to-multipoint ..(P2MP) ..- ..ANS✓✓-A ..network ..topology ..that
..specifies ..a ..direct ..connection ..from ..a ..central ..or ..common ..location ..to
..multiple ..network ..locations.
Optoelectronics ..- ..ANS✓✓-any ..technology ..that ..responds ..to ..light ..waves ..or
..is ..used ..in ..a ..fiber ..plant, ..such ..as ..a ..laser, ..photodiode, ..optical ..coupler ..or
..amplifier, ..etc.
Patch ..Panel ..- ..ANS✓✓-Also ..known ..as ..a ..connector ..panel, ..uses
..interconnection ..sleeves ..mounted ..on ..a ..panel, ..which ..accommodates ..an
..individual ..optical ..fiber ..connection ..on ..one ..side ..and ..an ..equipment
..connection ..on ..the ..other ..side.
Microbend ..- ..ANS✓✓-small ..imperfections ..in ..the ..core/cladding ..boundary ..of ..a
..fiver ..that ..attenuate ..the ..optical ..signal.
Besides ..RS-232 ..ports, ..what ..type ..of ..interface ..is ..common ..on ..a ..power
..meter? ..- ..ANS✓✓-A ..USB ..interface ..can ..provide ..easy ..download ..of
..information ..to ..a ..PC.
Optical ..power ..meters ..used ..for ..testing ..fiber-to-the-user ..(FTTx) ..installations
..operating ..downstream ..from ..the ..headend ..should ..be ..calibrated ..for ..which
..wavelengths? ..- ..ANS✓✓-1,490 ..nm, ..1,550 ..nm, ..and ..1,577 ..nm.
A ..wavelength-isolating ..power ..meter ..is ..most ..commonly ..used ..in ..- ..ANS✓✓-
Point-to-multipoint ..FTTx ..installations.
Optical ..loss ..test ..sets ..perform ..multiple ..functions ..because ..they ..include ..the
..features ..of ..multiple ..pieces ..of ..test ..sets. ..The ..features ..of ..which ..other ..test
..sets ..are ..combined ..into ..an ..optical ..loss ..test ..set? ..- ..ANS✓✓-A ..stabilized
..light ..source, ..an ..optical ..return ..loss ..meter, ..an ..enhanced ..optical ..power
..meter, ..and ..an ..optical ..talk ..set.
Questions and answers 2025
..
What ..topology ..do ..most ..fiber-to-the-user ..(FTTx) ..networks ..use, ..which
..requires ..greater ..fiver ..color ..code ..management ..in ..its ..documentation? ..- ..ANS
✓✓-Point-to-multipoint ..(P2MP)
Improper ..use ..of ..nylon ..tie ..wraps ..can ..induce ..this ..problem: ..- ..ANS✓✓-
Microbends
What ..are ..potential ..sources ..of ..problems ..in ..aerial ..installations? ..- ..ANS✓✓-
Falling ..branches, ..pole ..attachment ..problems, ..and ..improper ..sag ..and ..loading
..considerations.
During ..installation ..of ..fiber-optic ..cable, ..what ..does ..damage ..to ..the ..cable
..jacket ..cause? ..- ..ANS✓✓-Moisture ..migration ..into ..the ..cable.
In ..a ..fiber-optic ..network, ..- ..ANS✓✓-The ..role ..of ..maintenance ..is ..to
..proactively ..maintain ..network ..tolerances ..and ..recognize, ..locate, ..and ..remedy
..potential ..problems.
A ..fiber-optic ..network ..maintenance ..plan ..should ..be ..developed ..with ..which ..of
..the ..following ..in ..mind? ..- ..ANS✓✓-The ..task ..of ..compiling ..the ..physical
..document ..must ..become ..the ..responsibility ..of ..an ..identifiable ..position ..or
..organization.
What ..is ..the ..best ..way ..to ..prevent ..problems ..in ..outside ..fiber-optic ..splice
..enclosures? ..- ..ANS✓✓-The ..outer ..jacket ..and ..the ..internal ..cable ..structures
..must ..be ..secured ..individually ..to ..protect ..the ..closure ..and ..splice ..trays ..from
..the ..effects ..of ..expansion ..and ..contraction.
The ..troubleshooting ..process ..- ..ANS✓✓-should ..include ..steps ..that ..identify,
..analyze, ..and ..locate ..the ..problem ..as ..well ..as ..diagnose ..its ..source, ..repair ..the
..problem, ..and ..test ..to ..ensure ..the ..problem ..is ..resolved.
, When ..testing ..the ..fiber-optic ..plant, ..- ..ANS✓✓-An ..optical ..power ..meter ..is
..used ..to ..measure ..the ..strength ..of ..light ..signals ..anywhere ..in ..a ..fiber ..system
..where ..a ..connection ..can ..be ..made
As ..changes ..are ..introduced ..to ..a ..fiber-optic ..network, ..- ..ANS✓✓-
Documentation ..must ..be ..updated ..to ..reflect ..the ..new ..configuration ..and
..performance ..data.
As-built ..- ..ANS✓✓-Drawings, ..route ..maps, ..and ..notes ..that ..provide ..an
..accurate ..representation ..of ..a ..network ..and ..its ..key ..points ..in ..order ..to
..simplify ..maintenance ..and ..restoration ..tasks.
System ..margin ..- ..ANS✓✓-The ..amount ..of ..attenuation, ..in ..dB, ..that ..the
..system ..can ..absorb ..before ..the ..system ..fails.
Definition ..of ..Point-to-multipoint ..(P2MP) ..- ..ANS✓✓-A ..network ..topology ..that
..specifies ..a ..direct ..connection ..from ..a ..central ..or ..common ..location ..to
..multiple ..network ..locations.
Optoelectronics ..- ..ANS✓✓-any ..technology ..that ..responds ..to ..light ..waves ..or
..is ..used ..in ..a ..fiber ..plant, ..such ..as ..a ..laser, ..photodiode, ..optical ..coupler ..or
..amplifier, ..etc.
Patch ..Panel ..- ..ANS✓✓-Also ..known ..as ..a ..connector ..panel, ..uses
..interconnection ..sleeves ..mounted ..on ..a ..panel, ..which ..accommodates ..an
..individual ..optical ..fiber ..connection ..on ..one ..side ..and ..an ..equipment
..connection ..on ..the ..other ..side.
Microbend ..- ..ANS✓✓-small ..imperfections ..in ..the ..core/cladding ..boundary ..of ..a
..fiver ..that ..attenuate ..the ..optical ..signal.
Besides ..RS-232 ..ports, ..what ..type ..of ..interface ..is ..common ..on ..a ..power
..meter? ..- ..ANS✓✓-A ..USB ..interface ..can ..provide ..easy ..download ..of
..information ..to ..a ..PC.
Optical ..power ..meters ..used ..for ..testing ..fiber-to-the-user ..(FTTx) ..installations
..operating ..downstream ..from ..the ..headend ..should ..be ..calibrated ..for ..which
..wavelengths? ..- ..ANS✓✓-1,490 ..nm, ..1,550 ..nm, ..and ..1,577 ..nm.
A ..wavelength-isolating ..power ..meter ..is ..most ..commonly ..used ..in ..- ..ANS✓✓-
Point-to-multipoint ..FTTx ..installations.
Optical ..loss ..test ..sets ..perform ..multiple ..functions ..because ..they ..include ..the
..features ..of ..multiple ..pieces ..of ..test ..sets. ..The ..features ..of ..which ..other ..test
..sets ..are ..combined ..into ..an ..optical ..loss ..test ..set? ..- ..ANS✓✓-A ..stabilized
..light ..source, ..an ..optical ..return ..loss ..meter, ..an ..enhanced ..optical ..power
..meter, ..and ..an ..optical ..talk ..set.
