FIBER OPTICS ACTUAL QUESTIONS AND ANSWERS
GUARANTEE A+
✔✔Fiber amplifiers and DWDM work in the ______ wavelength range.
650-850
850-1300
1300-1550
1480-1650 - ✔✔1480-1650
✔✔Singlemode transceivers use _____ sources for their higher coupled power and
bandwidth.
LED
VCSEL
F-P lasers
DFB lasers - ✔✔F-P lasers
✔✔Multimode transceivers use _____ sources depending on their requirements for
coupled power and bandwidth.
LED
VCSEL
F-P lasers
DFB lasers - ✔✔LED
✔✔Singlemode fiber has a ______ light-carrying core than multimode fiber.
Smaller
Larger
Same size - ✔✔Smaller
✔✔What wavelengths are appropriate for use with multimode fiber?
650 & 850 nm
850 & 1300 nm
850 & 1310 nm
1310 & 1550 nm - ✔✔850-1300 nm
✔✔The diameter of the core in OM2 and OM3 multimode fiber is how large?
50 microns
62.5 microns
62.5 mm
, 9 mm - ✔✔50 microns
✔✔Which of the following fiber specifications is most important to the user and is an
important factor in testing?
Attenuation
Bandwidth
Numerical aperture
Core-cladding concentricity - ✔✔Attenuation
✔✔The largest contributor to fiber attenuation is ____________.
Absorption
Scattering
Bending losses
Microbends - ✔✔Scattering
✔✔The loss of a multimode graded index fiber is greatest at _________.
850 nm
1300 nm
1310 nm
1550 nm - ✔✔850 nm
✔✔Which type of dispersion affects singlemode fiber as well as multimode fiber?
Modal
Differential
Chromatic
Polarization mode - ✔✔Chromatic
✔✔Any cable that contains metallic conductors must be properly grounded and bonded.
True/False - ✔✔True
✔✔In order to specify a fiber optic cable properly, you need to specify installation
specifications as well as environmental specifications.
True/False - ✔✔True
✔✔Cables which contain both multimode and singlemode fibers are called:
Mixed cables
Hybrid cables
GUARANTEE A+
✔✔Fiber amplifiers and DWDM work in the ______ wavelength range.
650-850
850-1300
1300-1550
1480-1650 - ✔✔1480-1650
✔✔Singlemode transceivers use _____ sources for their higher coupled power and
bandwidth.
LED
VCSEL
F-P lasers
DFB lasers - ✔✔F-P lasers
✔✔Multimode transceivers use _____ sources depending on their requirements for
coupled power and bandwidth.
LED
VCSEL
F-P lasers
DFB lasers - ✔✔LED
✔✔Singlemode fiber has a ______ light-carrying core than multimode fiber.
Smaller
Larger
Same size - ✔✔Smaller
✔✔What wavelengths are appropriate for use with multimode fiber?
650 & 850 nm
850 & 1300 nm
850 & 1310 nm
1310 & 1550 nm - ✔✔850-1300 nm
✔✔The diameter of the core in OM2 and OM3 multimode fiber is how large?
50 microns
62.5 microns
62.5 mm
, 9 mm - ✔✔50 microns
✔✔Which of the following fiber specifications is most important to the user and is an
important factor in testing?
Attenuation
Bandwidth
Numerical aperture
Core-cladding concentricity - ✔✔Attenuation
✔✔The largest contributor to fiber attenuation is ____________.
Absorption
Scattering
Bending losses
Microbends - ✔✔Scattering
✔✔The loss of a multimode graded index fiber is greatest at _________.
850 nm
1300 nm
1310 nm
1550 nm - ✔✔850 nm
✔✔Which type of dispersion affects singlemode fiber as well as multimode fiber?
Modal
Differential
Chromatic
Polarization mode - ✔✔Chromatic
✔✔Any cable that contains metallic conductors must be properly grounded and bonded.
True/False - ✔✔True
✔✔In order to specify a fiber optic cable properly, you need to specify installation
specifications as well as environmental specifications.
True/False - ✔✔True
✔✔Cables which contain both multimode and singlemode fibers are called:
Mixed cables
Hybrid cables
