BICSI Installer 1 Exam questions and
answers 2026
Resistance - ANSWER-Resistance is expressed in Ohms, and is the property of a
conductor to resist the flow of electricity through it. V=IR
Inductance - ANSWER-Is a property of an electromagnetic field built around a
conductor that opposes any change in the current flow in a circuit
Capacitance - ANSWER-is a property of conductors that allows storage of electric
charges when potential differences exist between the conductors.
Impedance (V) - ANSWER-Total opposition of current flow measured in Ohms
American Wire Gauge (AWG) - ANSWER-A standard rating that indicates the diameter
of a wire, such as the conducting core of a coaxial cable or the twisted pairs in a UTP
cable.
Megahertz (MHz) - ANSWER-one million hertz, especially as a measure of the
frequency of transmissions
Megabit (Mb) - ANSWER-Approximately one million bits. Often used as a measurement
of data transfer throughput.
Bandwidth - ANSWER-The amount of data that can be transmitted over a network in a
given amount of time.
Decibel (dB) - ANSWER-A unit used to compare the loudness of different sounds.
Crosstalk - ANSWER-when data bleeds from one pair to another in a cable
Alien Crosstalk (AXT) - ANSWER-Unwanted signal coupling from one permanent link to
another
USOC - ANSWER-Universal Service Order Code
Coaxial cable types - ANSWER-Series-6 and Series-11
Coaxial connectors - ANSWER-Series-6 uses BNC and F connectors
Series-11 uses F and N connectors
Fiber connectors - ANSWER-SC, ST, and SST(LC or
, cladding - ANSWER-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.
25-pair color code - ANSWER-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 - ANSWER-Blue, Orange, Green, Brown, Slate, White, Red, Black,
Yellow, Violet, Rose, Aqua
NVP - ANSWER-Nominal Velocity of Propagation
Insertion loss - ANSWER-The difference in the amount of power received before and
after something is inserted into the circuit.
Multimode Fiber (MMF) - ANSWER-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)
Singlemode Fiber - ANSWER-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 - ANSWER-Multiple 250 um fibers bonded into a flat color coded ribbon.
Can splice a bunch at a time.
Fiber - Tight buffer diameter - ANSWER-900 um
Fiber - Acrylate coating diameter - ANSWER-250 um
OM1 - ANSWER-850 nm OFL - 200 MHz•km (3.5dB/km)
1300 nm - 400 MHz•km (1.5dB/km)
OM2 - ANSWER-850 nm OFL - 500MHz•km (3.5dB/km)
1300nm - 500MHz•km (1.5dB/km)
OM3 - ANSWER-850 nm OFL - 1500MHz•km (3.5dB/km)
850 nm RFL - 2000MHz•km (3.5dB/km)
1300 nm - 500MHz•km (1.5dB/km)
answers 2026
Resistance - ANSWER-Resistance is expressed in Ohms, and is the property of a
conductor to resist the flow of electricity through it. V=IR
Inductance - ANSWER-Is a property of an electromagnetic field built around a
conductor that opposes any change in the current flow in a circuit
Capacitance - ANSWER-is a property of conductors that allows storage of electric
charges when potential differences exist between the conductors.
Impedance (V) - ANSWER-Total opposition of current flow measured in Ohms
American Wire Gauge (AWG) - ANSWER-A standard rating that indicates the diameter
of a wire, such as the conducting core of a coaxial cable or the twisted pairs in a UTP
cable.
Megahertz (MHz) - ANSWER-one million hertz, especially as a measure of the
frequency of transmissions
Megabit (Mb) - ANSWER-Approximately one million bits. Often used as a measurement
of data transfer throughput.
Bandwidth - ANSWER-The amount of data that can be transmitted over a network in a
given amount of time.
Decibel (dB) - ANSWER-A unit used to compare the loudness of different sounds.
Crosstalk - ANSWER-when data bleeds from one pair to another in a cable
Alien Crosstalk (AXT) - ANSWER-Unwanted signal coupling from one permanent link to
another
USOC - ANSWER-Universal Service Order Code
Coaxial cable types - ANSWER-Series-6 and Series-11
Coaxial connectors - ANSWER-Series-6 uses BNC and F connectors
Series-11 uses F and N connectors
Fiber connectors - ANSWER-SC, ST, and SST(LC or
, cladding - ANSWER-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.
25-pair color code - ANSWER-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 - ANSWER-Blue, Orange, Green, Brown, Slate, White, Red, Black,
Yellow, Violet, Rose, Aqua
NVP - ANSWER-Nominal Velocity of Propagation
Insertion loss - ANSWER-The difference in the amount of power received before and
after something is inserted into the circuit.
Multimode Fiber (MMF) - ANSWER-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)
Singlemode Fiber - ANSWER-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 - ANSWER-Multiple 250 um fibers bonded into a flat color coded ribbon.
Can splice a bunch at a time.
Fiber - Tight buffer diameter - ANSWER-900 um
Fiber - Acrylate coating diameter - ANSWER-250 um
OM1 - ANSWER-850 nm OFL - 200 MHz•km (3.5dB/km)
1300 nm - 400 MHz•km (1.5dB/km)
OM2 - ANSWER-850 nm OFL - 500MHz•km (3.5dB/km)
1300nm - 500MHz•km (1.5dB/km)
OM3 - ANSWER-850 nm OFL - 1500MHz•km (3.5dB/km)
850 nm RFL - 2000MHz•km (3.5dB/km)
1300 nm - 500MHz•km (1.5dB/km)
