BICSI Installer 1 ACTUAL EXAM 2026-2027 \NEWEST EXAM
WITH COMPLETE QUESTIONS AND CORRECT ANSWERS\VERIFIED
100% GRADED A+
cladding
The glass or plastic shield around the core of a fiber-optic cable.
Cladding reflects light back to the core in patterns that vary depending
on the
transmission mode. This reflection allows fiber to bend around corners
without impairing the light-based signal.
Multimode Fiber (MMF)
Larger core with multiple paths of light. Common for backbone and
horizontal cabling in buildings. OM2 - Not recommended for new
installs. OM3 - Higher bandwidth. OM4 - Highest bandwidth for MMF.
2000m/6500ft limitation. 850 nm and 1300 nm (nanometers)
Single mode Fiber
Smaller core with only one path of lights. Horizontal, riser, campus
environments.
9 um core, 125 um cladding.
OS1 - LAN, tight buffered construction,
1310/1550 nm OS2 - Outside Plant, 1310, 1490,
1550, 1625 nm 3000m/9842ft limtations.
,Ribbon Fiber
Multiple 250 um fibers bonded into a flat color coded ribbon. Can
splice a bunch at a time.
OM4
850 nm OFL - 3500MHz•km (3.5dB/km)
850 nm RFL - 4700MHz•km (3.5dB/km) 1300 nm - 500MHz•km
(1.5dB/km)
Modal Distortion
A light distortion problem unique to MMF fiber-optic cable. Happens
when light signals are sent at the same time.
,Fiber - Tight buffer diameter
900 um
Fiber - Acrylate coating diameter
250 um
OM1
850 nm OFL - 200 MHz•km (3.5dB/km)
1300 nm - 400 MHz•km (1.5dB/km)
OM2
850 nm OFL - 500MHz•km (3.5dB/km)
1300nm - 500MHz•km (1.5dB/km)
OM3
850 nm OFL - 1500MHz•km (3.5dB/km)
850 nm RFL - 2000MHz•km
(3.5dB/km) 1300 nm - 500MHz•km
(1.5dB/km)
, chromatic dispersion
The broadening of a pulse due to different propagation velocities of
the spectral components of the light pulse. Begins at the light source
Modal Bandwidth is described in terms of...
(MHz)(km)
Ferrule
Key
Latching Mechanism
flat or pre-radiused end
assures consistent connector orientation within
couplers locks in place
Straight Tip (ST)
One of the most common fiber-optic connectors, similar in style to the
BNC connector in coax
subscriber connector (SC)
A square snap coupling for fiber-optic cable, about 2.5 mm wide,
used for cable-to-cable connections or to connect cables to
network devices. It latches with a push-pull action similar to
audio and video jacks.
WITH COMPLETE QUESTIONS AND CORRECT ANSWERS\VERIFIED
100% GRADED A+
cladding
The glass or plastic shield around the core of a fiber-optic cable.
Cladding reflects light back to the core in patterns that vary depending
on the
transmission mode. This reflection allows fiber to bend around corners
without impairing the light-based signal.
Multimode Fiber (MMF)
Larger core with multiple paths of light. Common for backbone and
horizontal cabling in buildings. OM2 - Not recommended for new
installs. OM3 - Higher bandwidth. OM4 - Highest bandwidth for MMF.
2000m/6500ft limitation. 850 nm and 1300 nm (nanometers)
Single mode Fiber
Smaller core with only one path of lights. Horizontal, riser, campus
environments.
9 um core, 125 um cladding.
OS1 - LAN, tight buffered construction,
1310/1550 nm OS2 - Outside Plant, 1310, 1490,
1550, 1625 nm 3000m/9842ft limtations.
,Ribbon Fiber
Multiple 250 um fibers bonded into a flat color coded ribbon. Can
splice a bunch at a time.
OM4
850 nm OFL - 3500MHz•km (3.5dB/km)
850 nm RFL - 4700MHz•km (3.5dB/km) 1300 nm - 500MHz•km
(1.5dB/km)
Modal Distortion
A light distortion problem unique to MMF fiber-optic cable. Happens
when light signals are sent at the same time.
,Fiber - Tight buffer diameter
900 um
Fiber - Acrylate coating diameter
250 um
OM1
850 nm OFL - 200 MHz•km (3.5dB/km)
1300 nm - 400 MHz•km (1.5dB/km)
OM2
850 nm OFL - 500MHz•km (3.5dB/km)
1300nm - 500MHz•km (1.5dB/km)
OM3
850 nm OFL - 1500MHz•km (3.5dB/km)
850 nm RFL - 2000MHz•km
(3.5dB/km) 1300 nm - 500MHz•km
(1.5dB/km)
, chromatic dispersion
The broadening of a pulse due to different propagation velocities of
the spectral components of the light pulse. Begins at the light source
Modal Bandwidth is described in terms of...
(MHz)(km)
Ferrule
Key
Latching Mechanism
flat or pre-radiused end
assures consistent connector orientation within
couplers locks in place
Straight Tip (ST)
One of the most common fiber-optic connectors, similar in style to the
BNC connector in coax
subscriber connector (SC)
A square snap coupling for fiber-optic cable, about 2.5 mm wide,
used for cable-to-cable connections or to connect cables to
network devices. It latches with a push-pull action similar to
audio and video jacks.
