Questions and CORRECT Answers
Professionalism - CORRECT ANSWER -the competence or skill expected of a
professional (How you look, sound, and feel)
Actions of a professional - CORRECT ANSWER -Refrain from acts that cause
background checks, time management, avoid arguments, park appropriot, do not steal time
Principle of transmission - CORRECT ANSWER -The movement of information in either
analog or digital form through copper conductors and fiber strands
AC - CORRECT ANSWER -Alternating current
Analog signal - CORRECT ANSWER -A signal in the form of a wave using continuous
variations of physical characteristics (constant voltage)
Bandwidth - CORRECT ANSWER -A range of frequencies available for signaling
expressed in hertz (potential capacity of signals traveling at once)
Bel - CORRECT ANSWER -A ratio for analog signal strength (10 dBs)
Current (I) - CORRECT ANSWER -The flow of electrons in a conductor (Amps)
Decibel (dB) - CORRECT ANSWER -A ratio for analog signal strength (1/10 BEL)
DC - CORRECT ANSWER -Direct current
,Digital signal - CORRECT ANSWER -Signal in the form of sequences of discrete pulses
(binary signal)
EMI - CORRECT ANSWER -Electromagnetic interference
Frequency - CORRECT ANSWER -The number of cycles that a signal completes in a
given time
Hertz (Hz) - CORRECT ANSWER -standard for measurement used for measuring
frequency in cycles per second. (60 Hz = 60 completed cycles per second)
Power (P) - CORRECT ANSWER -The amount of energy transferred per unit time
required to operate a device
Volt (V) - CORRECT ANSWER -A unit of measurement for electromotive force
Copper cabling - CORRECT ANSWER -Most common media for data transmission. Data
is transmitted as electrical pulses. (Cat 5, Cat 5e, Cat 6)
Attenuation - CORRECT ANSWER -The loss or weakening of a signal between two point
expressed in dBs (a ratio of signal sent and signal received)
AWG - CORRECT ANSWER -American wire gauge
Balanced twisted pair - CORRECT ANSWER -A type of wiring where a pair of
conductors continually twist inside the cable to reduce or eliminate the possibility of EMI from
other conductors in the cable (blue and blue white will be twisted together)
Capacitance - CORRECT ANSWER -the ability of a conductor to store electrical energy
,coaxial cable - CORRECT ANSWER -Cabling with a central metallic inner conductor and
a separated enclosed outer conductor by a dielectric material like a metallic braid
Crosstalk - CORRECT ANSWER -Unwanted transfer of a signals electromagnetic energy
(blue interfering with orange)
Impedance (Z) - CORRECT ANSWER -The total opposition that a circuit cable or
compound offers to the flow of altering current (measured in ohms)
Inductance - CORRECT ANSWER -The property of an electrical force field built around a
conductor when current flows through it
Insertion loss - CORRECT ANSWER -The signal loss resulting from the insertion of a
component (attenuation when a new signal is transmitted)
NVP - CORRECT ANSWER -Nominal velocity of propagation (coefficient used to
determine the speed of transmission relative to the speed of light)
Ohm (R) - CORRECT ANSWER -The measure of electrical resistance
Ohms law - CORRECT ANSWER -The mathematical relationship among electrical
current resistance and voltage
Ohms law formula - CORRECT ANSWER -V
I|R
Resistance - CORRECT ANSWER -A measurement of opposition a material offers to the
flow of direct current (measured in ohms)
, Return loss - CORRECT ANSWER -A ratio of the power of the outgoing signal to the
power of the reflected signal
USOC - CORRECT ANSWER -Universal service order code
Optical fiber cabling - CORRECT ANSWER -Transmits data modulated as light pulses
The advantages of fiber - CORRECT ANSWER -Fiber has greater bandwidth, can carry
signals over greater distances, and less susceptible to EMI
Attenuation - CORRECT ANSWER -The loss or weakening of a signal between two point
expressed in dBs (a ratio of signal sent and signal received)
Bandwidth - CORRECT ANSWER -A range of frequencies available for signaling
expressed in hertz (potential capacity of signals traveling at once)
Cable loss - CORRECT ANSWER -The attenuation of a signal as it passes through optical
fiber cable
Cladding - CORRECT ANSWER -The outer concentric glass layer that surrounds the
fibers core and has a lower index of refraction
Dispersion - CORRECT ANSWER -The loss of signal resulting from the scattering of
light pulses (The widening or spreading out of the modes)
Ferrule - CORRECT ANSWER -The alignment sleeve portion of an optical connector
FC - CORRECT ANSWER -Fiber connector