BICSI INSTALLER 1 EXAM
QUESTIONS AND CORRECT
ANSWERS (LATEST UPDATE
2024/2025)
25-pair color code
White - Blue, orange, green, brown, slate
Red - Blue, orange, green, brown, slate
Black - Blue, orange, green, brown, slate
Yellow - Blue, orange, green, brown, slate
Violet - Blue, orange, green, brown, slate
Fiber color code
Blue, Orange, Green, Brown, Slate, White, Red, Black, Yellow, Violet, Rose, Aqua
NVP
Nominal Velocity of PropagaHon
InserHon loss
The difference in the amount of power received before and aMer something is
inserted into the circuit.
Resistance
Resistance is expressed in Ohms, and is the property of a conductor to resist
the flow of electricity through it. V=IR
Inductance
Is a property of an electromagneHc field built around a conductor that opposes
any change in the current flow in a circuit
Capacitance
,Is a property of conductors that allows storage of electric charges when
potenHal differences exist between the conductors.
Impedance (V)
Total opposiHon of current flow measured in Ohms
American Wire Gauge (AWG)
A standard raHng that indicates the diameter of a wire, such as the conducHng
core of a coaxial cable or the twisted pairs in a UTP cable.
Megahertz (mhz)
One million hertz, especially as a measure of the frequency of transmissions
Megabit (Mb)
Approximately one million bits. OMen used as a measurement of data transfer
throughput.
Bandwidth
The amount of data that can be transmiYed over a network in a given amount
of Hme.
Decibel (db)
A unit used to compare the loudness of different sounds.
Crosstalk
When data bleeds from one pair to another in a cable
Alien Crosstalk (AXT)
Unwanted signal coupling from one permanent link to another
USOC
Universal Service Order Code
Coaxial cable types
Series-6 and Series-11
Coaxial connectors
, Series-6 uses BNC and F connectors
Series-11 uses F and N connectors
Fiber connectors
SC, ST, and SST(LC or
Cladding
The glass or plasHc shield around the core of a fiber-opHc cable. Cladding
reflects light back to the core in paYerns that vary depending on the
transmission mode. This reflecHon allows fiber to bend around corners without
impairing the light-based signal.
MulHmode Fiber (MMF)
Larger core with mulHple 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/6500M limitaHon. 850
nm and 1300 nm (nanometers)
Singlemode Fiber
Smaller core with only one path of lights. Horizontal, riser, campus
environments.
9 um core, 125 um cladding.
OS1 - LAN, Hght buffered construcHon, 1310/1550 nm
OS2 - Outside Plant, 1310, 1490, 1550, 1625 nm
3000m/9842M limtaHons.
Ribbon Fiber
MulHple 250 um fibers bonded into a flat color coded ribbon. Can splice a
bunch at a Hme.
Fiber - Tight buffer diameter
900 um
Fiber - Acrylate coaHng diameter
QUESTIONS AND CORRECT
ANSWERS (LATEST UPDATE
2024/2025)
25-pair color code
White - Blue, orange, green, brown, slate
Red - Blue, orange, green, brown, slate
Black - Blue, orange, green, brown, slate
Yellow - Blue, orange, green, brown, slate
Violet - Blue, orange, green, brown, slate
Fiber color code
Blue, Orange, Green, Brown, Slate, White, Red, Black, Yellow, Violet, Rose, Aqua
NVP
Nominal Velocity of PropagaHon
InserHon loss
The difference in the amount of power received before and aMer something is
inserted into the circuit.
Resistance
Resistance is expressed in Ohms, and is the property of a conductor to resist
the flow of electricity through it. V=IR
Inductance
Is a property of an electromagneHc field built around a conductor that opposes
any change in the current flow in a circuit
Capacitance
,Is a property of conductors that allows storage of electric charges when
potenHal differences exist between the conductors.
Impedance (V)
Total opposiHon of current flow measured in Ohms
American Wire Gauge (AWG)
A standard raHng that indicates the diameter of a wire, such as the conducHng
core of a coaxial cable or the twisted pairs in a UTP cable.
Megahertz (mhz)
One million hertz, especially as a measure of the frequency of transmissions
Megabit (Mb)
Approximately one million bits. OMen used as a measurement of data transfer
throughput.
Bandwidth
The amount of data that can be transmiYed over a network in a given amount
of Hme.
Decibel (db)
A unit used to compare the loudness of different sounds.
Crosstalk
When data bleeds from one pair to another in a cable
Alien Crosstalk (AXT)
Unwanted signal coupling from one permanent link to another
USOC
Universal Service Order Code
Coaxial cable types
Series-6 and Series-11
Coaxial connectors
, Series-6 uses BNC and F connectors
Series-11 uses F and N connectors
Fiber connectors
SC, ST, and SST(LC or
Cladding
The glass or plasHc shield around the core of a fiber-opHc cable. Cladding
reflects light back to the core in paYerns that vary depending on the
transmission mode. This reflecHon allows fiber to bend around corners without
impairing the light-based signal.
MulHmode Fiber (MMF)
Larger core with mulHple 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/6500M limitaHon. 850
nm and 1300 nm (nanometers)
Singlemode Fiber
Smaller core with only one path of lights. Horizontal, riser, campus
environments.
9 um core, 125 um cladding.
OS1 - LAN, Hght buffered construcHon, 1310/1550 nm
OS2 - Outside Plant, 1310, 1490, 1550, 1625 nm
3000m/9842M limtaHons.
Ribbon Fiber
MulHple 250 um fibers bonded into a flat color coded ribbon. Can splice a
bunch at a Hme.
Fiber - Tight buffer diameter
900 um
Fiber - Acrylate coaHng diameter
