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A comprehensive set of questions and answers related to bicsi installer 2 copper study. It covers various topics including administration of structure cabling systems (scs), crosstalk types, transmission methods, electrical power, digital transmission, and more. Designed to help students prepare for exams and gain a deeper understanding of the subject matter.
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There are four classes of administration of Structure cabling system (SCS) ✔: Class 1 single ER equipment room Class 2 multiple telecommunication spaces Class 3 multiple buildings on campus Class 4 multiple sites Endothermic ✔: Ability to absorb heat 3 basic types of crosstalk of interest for balaced twisted pair ✔: Near End (NEXT)
Attenuation to crosstalk far end (ACRF) Alien crosstalk intumescent ✔: Ability to expand heat Three transmission methods are ✔: Simplex Half duplex Full duplex Simplex ✔: Transmits signals in one direction Half Duplex ✔: Transmits signals in either direction but only One Direction at a time Direct current (DC) ✔: Refers to a study value that does not change the polarity of the voltage or the direction of the current
What are 3 types of Bus Bars ✔: Primary Bus Bar (PBB) Secondary Bus Bar (SBB) Rack Bus Bar (RBB) Electrical power measured in watts has two variations as known as ✔: Apparent or reactive power and true (real) power. The basic unit of digital information is a ✔: Bit The POTS signal range is transmitted between __________Hz which is regarded as the minimum range for human speech to be audible and recognizable. ✔: 300 and 3400 Megahertz ✔: _______ - quantifies the bandwidth of a cable system in a frequency range of interest Megabit ✔: ______- refers to the number of bits of information that can be transported over the media
When a device First starts a transmission it will employ a nominal bass voltage of some level of volts. Example 24 V. A pulse of +3 V would indicate ______ and the line voltage would rise from 24 V to 27 V. When the voltage level returns to the 24 V base, it would represent an ________. ✔: On state Off state Increase or decrease of three dB will result in what ✔: A doubling or we're halving of the power Increases or decreases of 6 dB will cause a doubling or halving of the ✔: Voltage A gauge change of __ numbers approximately doubles or halves the conductor's resistance. ✔: 3 Resistance
✔: The amount of reflected energy is affected by the degree of impedance mismatch between the receiver any transmitter Nominal Velocity of Propagation (NVP) ✔: The ratio of the speed of transmission along a cable relative to the speed of light in a vacuum Some key factors in establishing a good connection and minimizing loss of signal include ✔: Fit Alignment Functionality Configuration Connectors ✔: Connecting hardware is often referred to as All category/class rated cable ✔: Generally have a characteristic impedance of 100 ohm Near-End Crosstalk (NEXT)
✔: Is a measure of the unwanted signal coupling from transmitter at the near end into another pair measured at the near end Attenuation-to-Crosstalk Ratio, Far-end (ACRF) ✔: Is the measure of the unwanted signal transfer that is assistant by applying a signal on one pair at the near and measuring the signal transfer level on any disturbed pair at the receiving end of the cable (ACRF) ✔: Is measured and expressed in decibels at the opposite end from which the source signal is transmitted Alien crosstalk (AXT) ✔: Is the unwanted signal coupling from a disturbed pair of another 4- pair cable channel permanent link or component to a disturbed Pair of another 4 pair channel permanent link or component What does 8P8C stand for? ✔: 8 - position, 8-contact Codes as adopted in part by the FCC are
