BICSI IT Systems Installation Methods Manual (ITSIMM) Practice Exam

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• Twinaxial cables electrically function like which type of cable?
• Which environmental factor can heavily impact the performance of fiber optic cables?
• Why is twisted-pair cable referred to as balanced cable?
• The length of the twist in a balanced twisted-pair cable is known as the pair lay or what?
• The decibel is categorized as which type of function?
• A decrease of 3dB results in what change to power?
• NEXT measures unwanted signal coupling from a transmitter at which end of the circuit?
• An increase of 10 dB for power will cause an increase of _____ times the original dB value.
• What is the bandwidth of OM5 multimode fiber at 1300 nm?
• Which balanced twisted-pair cable type has a foil screen around the individual cable pairs?
• What is the term for the loss of power that occurs as light pulses travel through optical fiber cables?
• In the AWG system, what does a larger number denote regarding wire size?
• What is the maximum attenuation of OS2 cable specified at the wavelength of 1550 nm?
• Is it true or false that using screened or shielded cabling can eliminate the need for metallic conduit in some environments?
• For OS2 outside plant, what is the maximum attenuation of singlemode optical fiber cable at 1550 nm?
• What is characteristic impedance most associated with in signal transfer?
• Propagation delay for the 100 ohm 4-pair cables is expressed in _____ seconds.
• Is it true that some electrical activity produces electric fields but no magnetic fields?
• What is the characteristic impedance of both RG-58 and RG-316 coaxial cables?
• In the AWG system, a gauge decrease of three numbers approximately halves the conductor's _____.
• In the AWG system, how does a gauge increase of three numbers affect a conductor's resistance?
• Where is the most effective signal transfer located in a system?
• Crosstalk is increased by physical pair separation. True or False?
• For optical fiber, which is a potential source of attenuation?
• In an AC circuit, what is the product of observed/measured voltage and observed/measured current known as?
• Which factors are considered key in establishing a good connection and minimizing signal loss?
• Is a decibel considered an absolute value?
• An increase in voltage typically results in what kind of change to the power in an electrical system?
• Can crosstalk occur between adjacent cables?
• Which of the following cables is typically used for video backbone distribution?
• What is the primary purpose of the trench or moat in optical fibers?
• What is the impact of temperature on optical fiber performance?
• At what frequency does the ISO class Ea associate a bandwidth for balanced twisted-pair cabling?
• What are cables designed to achieve constant characteristic impedance independent of?
• What is the basic unit of measure for electrical resistance?
• The overfilled launch (OFL) bandwidth of an OM2 multimode fiber at 850 nm is how many MHz-km?
• Which statement is true regarding standard ADSL?
• What type of current does a battery provide?
• What frequency in MHz corresponds to ISO class Fa for balanced twisted-pair cabling channel performance?
• What measurement is critical to understand the quality of signal transmission in cabling links?
• What type of power is characteristic of AC electrical circuits with reactive components?
• What term describes the widening or spreading out of the modes in a light pulse as it travels through optical fiber?
• How does capacitive reactance relate to the applied frequency?
• What is a common measure used to indicate bandwidth capability in fiber optics?
• Coaxial cables used for RF signal transmission are designated by which suffix?
• The bandwidth of an OM2 multimode fiber is _____ MHz-km at 1300 nm.
• What is effective power within an AC circuit?
• In optical fibers, how do dispersion factors affect the bit error rate (BER) and effective bandwidth?
• For OS2 outside plant, singlemode optical fiber cable, at which wavelength can attenuation be as high as 0.4 dB/km?
• Like copper cables, attenuation and _____ considerations are of concern for optical fiber systems.
• What is one characteristic of OM3 multimode fiber?
• What phenomenon is improved by twisting the pairs in a cable?
• Which of the following is a characteristic of optical fibers?
• What is the basic unit of digital information?
• What does the term 'padding down' refer to in a circuit?
• What is the largest fixed diameter defined for the AWG system?
• What process is involved in converting analog inputs to digital signals for transmission?
• Which formula is a representation of Ohm's Law?
• What technology does a TIA-defined "Category" encompass in cabling?
• What frequency in MHz is associated with TIA Category 5e for balanced twisted-pair cabling channel performance?
• In multi-conductor cables, the capacitance between a conductor and ground is referred to as what type of capacitance?
• Which type of coaxial cable uses an F or N connector?
• What effect does a larger quantity of signal transmission between circuits have on the decibel crosstalk value?
• What is the restricted mode launch (RML) bandwidth of an OM4 multimode fiber at 850 nm?
• Capacitance creates what kind of effect between two wires that are insulated and separated?
• Is it true that a multimode optical fiber cabling system generally uses VCSELs for transmission rates of 1 Gb/s and above?
• How do signal losses due to microbend-induced attenuation in optical fiber behave as mode-field diameter increases?
• Which optical fiber type is known for having a larger core size to support multiple light paths?
• Electromagnetic interference is least likely to affect which type of cable?
• What effect does high dispersion have on optical fiber communication?
• In DSL technology, how wide are the channels typically created?
• Is OS1 singlemode optical fiber recommended for new installations?
• What is the effect of optical fiber attenuation in relation to cable length?
• What is the term used for the random, unwanted energy coupled into a conductor from an external source?
• What additional consideration, besides attenuation, is relevant for optical fiber systems?
• Capacitive reactance is _____ proportional to the applied frequency.
• What does insertion loss (attenuation) indicate in terms of signal availability?
• What role does the voltage pulse play in digital transmission?
• Is delay skew the same as the time interval required for a signal to be transmitted from one end of a circuit to the other?
• The lower the quantity of signal transferred between circuits, what happens to the decibel crosstalk loss value?
• Digitally transmitted information is a representation of input that is:
• Singlemode optical fibers typically have a core diameter of how many micrometers?
• What is the primary function of twisting the pairs in balance twisted-pair cabling?
• Is it true that there is no TIA equivalent for ISO class F?
• What is the reference unit of measure used to define the size of an optical fiber?
• What acronym refers to a braid-screened unscreened twisted-pair cable?
• Which type of transmission uses continuously varying electrical signals?
• The bandwidth of an OM3 multimode fiber is _____ MHz-km at 1300 nm.
• The overfilled launch (OFL) bandwidth of an OM3 multimode fiber is what at 850nm?
• OS2 singlemode optical fiber supports which of the following wavelengths?
• What does a lower level of attenuation imply about a signal?
• Inductive reactance is _____ proportional to the frequency.
• Which of the following factors is typically a concern for both copper cables and optical fiber systems?
• Which type of optical fiber cable consists of multiple 900 µm tight-buffered strands under a single jacket?
• What does the acronym S/UTP stand for?
• Which type of fiber is most affected by modal dispersion?
• What are the two standard main power frequencies typically used?
• The ISO equivalent to TIA Category 8 is _____.
• What frequency is associated with TIA Category 6A for balanced twisted-pair cabling?
• ISO defines the component performance of balanced twisted-pair cabling using the term _____.
• What does the nominal velocity of propagation (NVP) represent?
• How does proper cable design affect crosstalk?
• Graded index optical fiber is effective in eliminating which of the following effects?
• What property of conductors enables them to store electrical charge when potential differences exist?
• Megahertz quantifies the bandwidth of a cabling system in a frequency range of interest. Is this statement true?
• What are system gain and attenuation typically expressed as?
• Which statement is true regarding the number of fibers in a ribbon cable?
• What is the overfilled launch (OFL) bandwidth of an OM2 multimode fiber at 850 nm?
• Which coaxial cable series has less signal attenuation, making it the preferred choice for longer runs?
• What is the purpose of using bend insensitive fiber optics?
• At what wavelength is the attenuation of singlemode optical fiber at its highest?
• Which factor primarily influences attenuation in optical fiber systems?
• What is the frequency range for DSL technology channels?
• Does electrical resistance change with the length of a cable?
• Optical fiber attenuation is affected by both cable length and light wavelength. What is the correct answer?
• A school intercom is NOT an example of a simplex transmission. True or False?
• Which of the following is true about the core of multimode fiber?
• A decrease of 20 dB for current will result in what change to the original dB value?
• For OS1a inside plant singlemode optical fiber cable, what is the maximum attenuation at 1550 nm in dB/km?
• In AC circuits, what is the term for the total opposition to current flow?
• Does the optical fiber cable listing designation 'OFNP' refer to a non-conductive plenum cable?
• The transmission of digital data can be accomplished on a direct digital basis over a digital circuit, or it can be converted to an analog signal. True or False?
• For OS2 outside plant singlemode optical fiber cable, what is the maximum attenuation at 1383 nm?
• What does a decibel loss imply in terms of signal strength?
• When measuring the strength of a signal, which measurement unit is commonly used?
• Which frequency range typically limits voice-grade transmission of speech?
• For the OM5 version of multimode optical fiber cable, attenuation at which wavelength can be as high as 2.3 dB/km?
• Which parameter do some cable test devices use nominal velocity of propagation (NVP) to determine?
• What term describes the maximum amount of light a fiber can carry?
• Is OM2 (50 um core / 125 um cladding) multimode optical fiber recommended for new installations?
• Which cable marking designates a 'communications limited use' type of copper cable?
• What do decibels represent in terms of electrical signals?
• What frequency in MHz is associated with TIA Category 3 for balanced twisted-pair cabling?
• What is the main advantage of using OM3 multimode fiber over OM2?
• What is the primary advantage of using optical fiber over copper wires?
• What term refers to the third layer of glass used in some optical fibers?
• What frequency is associated with an ISO class of Ea for balanced twisted-pair cabling?
• What aspect of optical fiber ensures minimal signal loss?
• Which of the following statements about electrical resistance in cables is true?
• What term describes unwanted signal coupling from one pair of a 4-pair cable to another?
• Which component primarily determines the performance of a telecommunications system?
• What does insertion loss measure in a cable system?
• What is the main reason for using twisted-pair cabling in telecommunications?
• Which coaxial cables have a characteristic impedance of 75 ohm?
• In the American Wire Gauge (AWG) system, what is the effect of a gauge change of 3 on the conductor's resistance?
• The number of bits that can be transported over the media is determined by the type of _____ scheme used in a system.
• In the AWG system, a gauge decrease of three numbers approximately halves the conductor's _____.
• OS1 singlemode optical fiber is compatible with which wavelengths?
• Inductive _____ is a force that opposes a change in the direction of current flow on a conductive path.
• Do optical fiber signal losses due to microbend-induced attenuation decrease with mode-field diameter?
• What term does ISO use to define the performance of balanced twisted-pair cabling?
• In optical fibers, the purpose of the cladding is to confine the light within the core by creating a reflective _____.
• What is the maximum attenuation value for OM5 multimode fiber at specified bandwidth?
• Which ISO class associates a frequency of 16 MHz with balanced twisted-pair cabling channel performance?
• Which factor is NOT a concern for the installation of optical fiber?
• In multi-conductor cables, what is the capacitance between two conductors called?
• What is the primary purpose of using fiber optic cables in networking?
• Which technology utilizes bandwidth above the POTS range in existing PSTN copper loops?
• What is a common connector type used for Series 6 coaxial cables?
• Which coaxial cable is typically used for RF applications like connections between WAP and antennas?
• Which type of cable typically has lower crosstalk levels?
• The bandwidth of an OM1 multimode fiber is _____ MHz-km at 1300 nm.
• Which type of fiber optic cable is generally used for long-distance communication?
• Is the statement true or false: The third layer of glass in bend insensitive optical fiber has a higher index of refraction than the core?
• What type of dispersion is the sum of modal dispersion and chromatic dispersion in optical fibers?
• Typical voice-grade transmission of speech is generally limited to which frequency range?
• What is the typical result of using nominal velocity of propagation (NVP) in cabling tests?
• Balanced twisted-pair cabling channel performance associates a frequency of 100 MHz with ISO class _____.
• What limits optical fiber bandwidth?
• What is the main purpose of cladding in optical fibers?
• What is the common characteristic impedance for voice-grade transmission lines?
• What is the significance of the term "modal dispersion" in fiber optics?
• Is it true that net current fields weaken with increasing distance?
• What is the impact of increasing the diameter of an insulating material in cabling?
• How much increase in decibels corresponds to the doubling of power?
• What is the approximate variation in the lay of a balanced twisted-pair cable?
• Which type of optical fiber cable consists of multiple individually jacketed strands under a single overall jacket?
• What type of fiber is OM1 classified as?
• Net current fields weaken directly with what factor?
• The restricted mode launch (RML) bandwidth of an OM5 multimode fiber at 935 nm is?
• VCSELs and LEDs are used in _____ optical fiber systems.
• What characterizes a balanced twisted-pair cabling system?
• At what level does voltage begin for each sine wave in alternating current (AC)?
• What is the primary advantage of using a bend insensitive fiber?
• What type of fiber cable consists of a single fiber strand used for long-distance transmission?
• Does direct current (DC) change the polarity of the voltage?
• An increase of 20 dB for voltage or current will cause an increase of how many times the original value?
• What causes modal dispersion in multimode fiber?
• Doubling a cable's length has what effect on the cable's electrical resistance?
• What is the overfilled launch (OFL) bandwidth of an OM4 multimode fiber at 850 nm?
• Coaxial cable is described as what due to the potential differences in the conductors?
• Are ribbon optical fiber cables known to use multifiber push-on (MPO) connectors?
• What is the second supported wavelength for multimode optical fiber in addition to 850nm?
• What is the characteristic impedance of RG-58 and RG-316 coaxial cables?
• How does twisted pair cabling impact signal quality?
• In the AWG system, a gauge change of 6 approximately affects what characteristic of the conductor?
• Which of the following is deemed incorrect regarding decibels?
• What does the cable marking 'OFNR' refer to?
• The overfilled launch (OFL) bandwidth of an OM5 multimode fiber is how many MHz-km at 935 nm?
• Is it true that an EMI source is always external to the cable containing the affected circuit?
• Which type of fiber is typically used for higher bandwidth applications?
• How is the characteristic impedance of Series-59 coaxial cable defined?
• What does the term 'crosstalk' refer to in cabling?
• What is the basic unit of measure for inductance?
• Balanced twisted-pair cabling channel performance associates a frequency of 250 MHz with which ISO class?
• Which of the following is a common application for balance twisted-pair cabling?
• In a structured cabling system, what is the maximum distance limitation for multimode optical fiber cable?
• What is true about the bandwidth of a system in relation to its length?
• Do twinaxial cables function like shielded single-pair balanced twisted-pair cables?
• What happens to the signal in a system as its distance increases?
• An AC signal is typically shown as a _____ wave.
• What does return loss measure?
• What characteristic is crucial for minimizing signal loss in cables?
• In fiber optics, what does the term "core" refer to?
• What frequency does one megahertz (MHz) represent?
• What does "attenuation" in optical fibers refer to?
• What is the overfilled launch (OFL) bandwidth of an OM5 multimode fiber at 850nm?
• What is one of the primary advantages of using fiber optic cabling over copper cabling?
• In an optical fiber, how does the refractive index of the core compare to that of the cladding?
• How much does a conductor's resistance increase for each 5.5 °C (~10 °F) rise in temperature?
• What term describes the physical quantity that may affect current flow in a circuit?
• What phenomenon confines light traveling down the core of an optical fiber?
• When considering signal transfer, a smaller quantity of signal results in what ratio outcome?
• Which balanced twisted-pair cable type does not have a foil screen around the individual pairs?
• In the AWG system, a gauge change of 3 approximately doubles or halves the conductor's:
• In a simplex transmission, how do signals travel?
• What is the primary characteristic being described when discussing the combined effects of resistance, inductance, and insertion loss in a circuit?
• What unit of measure is used to describe frequency?
• The increase in the level of crosstalk as frequency increases is: True or False?
• The reference unit of measure used to define the size of an optical fiber is the _____.
• Loose-tube optical fiber cable may require _____ tubing to build up the fiber strand's diameter to allow direct connectorization.
• What is the significance of the designation 'OFNP' in optical fiber cabling?
• Is the index of refraction of a glass optical fiber consistent for all wavelengths?
• What does a 'bel' measure?
• What happens to the voltage when there is an increase of 3 dB?
• What is the restricted mode launch (RML) bandwidth of OM5 multimode fiber at 850 nm?
• Is loose-tube optical fiber cable primarily used indoors or outdoors?
• What term does TIA use to define the performance of balanced twisted-pair cabling?
• What measurement is typically used when evaluating fiber optic performance?
• In a cabling link, what does a larger decibel crosstalk loss value indicate?
• What is the maximum attenuation of Fos OS1a indoor-outdoor, singlemode optical fiber cable at 1550 nm?
• What is the maximum attenuation at 1300nm for multimode optical fiber cable (OM1 - OM5)?
• What performance standard is associated with the term "Category" in cabling?
• In digital transmission, the on or off state is represented by an electrical voltage pulse within a predefined time interval. True or False?
• What factor increases crosstalk interference in cabling?
• Is ribbon optical fiber cable available only in a multimode version?
• In alternating current, where does the voltage begin during each sine wave cycle?
• What type of coaxial cable is used for video, CATV, and security cameras?
• An increase of how many dB for voltage will result in a tenfold increase of the original dB value?
• Which material is NOT typically associated with mutual capacitance?
• What is optical fiber attenuation?
• What is typically a return loss value?
• What must be subtracted from the far-end crosstalk measurement to determine the ACR-F value?
• What does the term "refraction" refer to in the context of optical fibers?
• What term describes the time interval required for a signal to travel from one end of a circuit to the other?
• What is the basic unit of measure for capacitance?
• What type of dispersion is caused by light injected into the optical fiber media containing slightly differing wavelengths?
• Crosstalk values in communication systems are typically expressed in which unit?
• What is the expected benefit of wrapping conductors together in twisted pairs?
• What is the length relationship between the cable jacket and the fiber length in loose-tube optical fiber cable?
• For OS1a indoor-outdoor singlemode optical fiber cable, what is the maximum attenuation at 1383 nm?
• Which component is crucial for preventing light loss in optical fiber?
• A stranded wire will always have a _____ overall diameter than a solid wire with the same AWG.
• Which statement about ISO class Fa balanced twisted-pair cabling is correct?
• What is maintained at a close tolerance to minimize resistance unbalance in a pair of conductors?
• Is the statement true or false? The information transmitted by a telecommunications system always originates in analog form.
• What type of data transmission can occur over a digital circuit?
• What type of fiber is typically used for high-bandwidth applications?
• Does the statement "High-current fields weaken directly with distance" hold true?
• What is the maximum attenuation for OS1a indoor-outdoor, singlemode optical fiber cable at 1383 nm?
• Which of the following materials is commonly used for the core of optical fibers?
• What function does a modem perform in signal transmission?
• Is a battery considered an example of an AC source?
• How many cycles per second does a gigahertz (GHz) equal?
• For all versions of multimode optical fiber cable (OM1-OM5), what is the maximum attenuation at 850nm?
• What happens to the electrical resistance of a cable as its length increases?
• What should be checked to ensure the integrity of optical fiber connections?
• What is the function of a modem in signal transmission?
• Which of the following is NOT a cause of signal loss in optical fibers?
• How does electrical resistance relate to a cable's length?
• What visual characteristic may help installers identify macrobends in optical fiber strands?
• True or False: Mutual capacitance is affected by the diameter of a conductor's insulating material.
• How many combinations of pair-to-pair NEXT measurements are there with a 4-pair cabling link?
• What does AXT stand for in the context of signal coupling?
• Which statement is true about a battery?
• How is bandwidth typically expressed in relation to a system's capabilities?
• What does attenuation primarily affect in fiber optics?
• Does 'OFNG' refer to a non-conductive plenum cable?
• What is the purpose of a codec in digital transmission?
• A decrease of how many dB results in halving of the voltage?
• What frequency in MHz is associated with TIA Category 3 balanced twisted-pair cabling channel performance?
• Which category is regarded as a standard for high-speed networking?
• What type of light source is generally used for transmission rates below 1 Gb/s in multimode optical fiber cabling systems?
• The center conductor of a Series X coaxial cable is primarily made of which material?
• How are macrobends in optical fiber strands perceived by the installer?
• The restricted mode launch (RML) bandwidth of an OM5 multimode fiber is _____ MHz-km at 850nm.
• What is the maximum distance for singlemode optical fiber cable in a structured cabling system (SCS)?
• Which transmission medium typically uses an LED light source?
• What does the optical fiber cable listing designation 'OFC' refer to?
• Which of the following effects can impair signal quality in an optical fiber?
• What is the visibility of microbends in optical fiber strands to the installer?
• What is an alternative term for attenuation?
• A _____ equals a frequency of one trillion cycles in one second.
• Which type of coaxial cable is typically used for video transmission?
• Increasing the length of the optical fiber cable _____ the modal bandwidth.
• What is the main purpose of twisted-pair cabling in networking?
• What is the maximum attenuation for all versions of multimode optical fiber cable (OM1-OM5) at 1300 nm in dB/km?
• What effect does increasing a signal's power have on attenuation?
• A digital signal is characterized as a _____ signal that changes from one state to another in distinct steps.
• What is the relationship between core and cladding in an optical fiber referred to as?
• Can tight-buffered optical fiber cable be used outside buildings?
• What kind of cable does the term "tight-buffered" refer to in fiber optics?
• What is the maximum attenuation for the OM5 version of multimode optical fiber cable at 935 nm?
• What effect does the different twist rates in a multi-pair balanced twisted-pair cable have on physical lengths?
• How does the length of a system affect its bandwidth?
• What is the term for the movement of information by electromagnetic energy through a transport medium?
• What does the term "mutual capacitance" pertain to?
• Which type of fiber optic cable is designed for short distances?
• A power source having voltage without current flow will not provide any power. True or False?
• Which type of coaxial cable uses an F or BNC connector?
• Bend insensitive optical fiber cable can typically be bent how many times tighter than non-bend insensitive fibers with similar attenuation?
• What does it mean to transmit digital data over an analog signal?
• In terms of balanced twisted-pair cabling, what does a higher performance category denote?
• What is the overfilled launch (OFL) bandwidth of an OM1 multimode fiber at 850nm?
• What can be said about the relationship between frequency and attenuation in optical fibers?
• In analog to digital conversion, the PCM process samples the analog voice signal _____ times per second.