9635915
Descrição
Quiz por Jeanie Fitzgerald, atualizado more than 1 year ago
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Criado por Jeanie Fitzgerald
quase 7 anos atrás
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Questão 1
Questão
Testing should be performed using an organized systematic method. Which of the following is Phase 1 method
Responda
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Specification and visual verification
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Testing with various equipment as required for each type of cable
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Documentation
Questão 2
Questão
Testing should be performed using an organized systematic method. Which of the following is Phase 2 method
Responda
-
Specification and visual verification
-
Testing with various equipment as required for each cable
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Documentation
Questão 3
Questão
Testing should be performed using an organized systematic method. Which of the following is Phase 3 method
Responda
-
Specification and visualization
-
Testing with various equipment required per cable
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Documentation
Questão 4
Questão
Troubleshooting a problem in a customers cabling system involves, Check all that apply
Responda
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Verify and isolate the problem
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repair and retest to ensure functionality
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alienate or confuse person being questioned
Questão 5
Questão
Troubleshooting is an __________________ process
Responda
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tedious
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investigative
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technical
Questão 6
Questão
These types of test equipment are used for which of the following, (wire map, multimeter, TDR, butt set, inductive amplifier,...
Responda
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optical fiber media
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copper media
Questão 7
Questão
Certification test sets are used to verify that a cabling system meets transmission performance requirements.
These link parameters are defined in which applicable standards. Check all that apply
Responda
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ANSI/TIA 1152
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ISO/IEC 11801
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NEC/NFPA
Questão 8
Questão
What is the frequency range for Category 6a
Responda
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250 MHz
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500 MHz
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600 MHz
Questão 9
Questão
Nominal velocity of propagation ( NVP) is used to determine
Responda
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length
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delay skew
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wire map
Questão 10
Questão
This coefficient is used to determine the speed of transmission along a cable relative to the speed of light in a vacuum, typically expressed as a percentage.
Responda
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NVP
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NEXT
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ACRF
Questão 11
Questão
Factory calibration may be required every 18 months for certification test sets.
Responda
- True
- False
Questão 12
Questão
A good rule of thumb is to perform the field calibration at least_________ or ______________ a new series of tests. (Check all that apply)
Responda
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once a day
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before beginning
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monthly
Questão 13
Questão
An *PASS or *FAIL is often referred to as the _________ _________ or a __________ ___________ . Check all that apply
Responda
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uncertainty zone
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marginal condition
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reference dimension
Questão 14
Questão
Pairs within a 4 pair cable use a different twist length to improve NEXT. A physical difference in length between pairs is referred to as
Responda
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velocity of propagation
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delay skew
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return loss
Questão 15
Questão
When addressing copper media, __________________ is the loss in power as it travels along a cable, increases with temperature, frequency and cable length as well as improper terminations and equipment cords.
Responda
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Excessive near end crosstalk ( NEXT )
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Attenuation to crosstalk ratio ( ACR )
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High Insertion loss
Questão 16
Questão
___________ is the unwanted signal coupling between pairs, It is measured at the end of a cable nearest the point of transmission.
Responda
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Insertion loss
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Attenuation to cross talk (ACR)
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Near end cross talk (NEXT)
Questão 17
Questão
__________________ is a ratio of the outgoing signal to the power of the reflected signal expressed in dB.
Responda
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Attenuation
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delay skew
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return loss
Questão 18
Questão
Because of the twisting of the pairs, the actual physical length of balanced twisted pair cable will appear slightly shorter than the electrically measured length.
Responda
- True
- False
Questão 19
Questão
Prior to Optical fiber installation, the installer and the client should determine what field tests should be performed to include these as a minimum.
Check all that apply
Responda
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polarity
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attenuation
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length
Questão 20
Questão
Pre-installation testing should start with a check that the fiber type is correct. testing can be done with a visual fault locator(VFL), optical loss test set (OLTS), and an optical time domain reflectometer (OTDR). Of these three, which can be used using only one end
Responda
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VFL
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OLTS
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OTDR
Questão 21
Questão
Acceptance testing is accomplished by using which of the folowing
Responda
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VFL
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OLTS
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OTDR
Questão 22
Questão
This tool is used to inspect the end face of the optical fiber connector for radius of curvature, offset of polish and optical height.
Responda
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Microscope
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Interferometer
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VFL
Questão 23
Questão
Microscopes greater than 200x power, tend to make the smallest defect look much worse than it actually is.
Responda
- True
- False
Questão 24
Questão
For bi-directional testing at both wavelengths at one time the test instrument to be used is
Responda
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OLTS
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OTDR
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Interferometer
Questão 25
Questão
A current certificate of calibration of the tester may be required as part of the projects documentaion requirements.
Responda
- True
- False
Questão 26
Questão
All values of attenuation for cable, connectors, and splices provided in any standard or specification are stated as being the maximum allowed loss values accepted by the standard.
Responda
- True
- False
Questão 27
Questão
Connector insertion loss is often stated in cabling components standards as _______ dB per mated pair for both multimode and singlemode, but all products should be better than _______ per mated pair.
Responda
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3.5, 1.5
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0.75, 0.5
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0.5, 0.3
Questão 28
Questão
The splice insertion loss allowance for LAN cabling standards is 0.3 dB per splice regardless if it is mechanical or fusion, single mode or multi mode.
Responda
- True
- False
Questão 29
Questão
Bandwidth for optical fiber circuits cannot be measured in the field or proven through calculations by installer.
Responda
- True
- False
Questão 30
Questão
The _______ jumper method is the preferred referencing method for most installed optical fiber systems.
Responda
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two, formerly Method A
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one, formerly Method B
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three, formerly Method C
Questão 31
Questão
This tester locates and detects faults and determines the amount of signal loss at any point in the optical fiber.
Responda
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OLTS
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OTDR
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VFL
Questão 32
Questão
The OTDR trace ___________ replace the need for the OLTS testing.
Responda
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does
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does not
Questão 33
Questão
This tester uses Rayleigh scattering and Fresnel reflection to measure characteristics of an optical fiber.
Responda
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OLTS
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OTDR
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Interferometer
Questão 34
Questão
_______________ wavelengths of light exhibit greater amounts of attenuation in the same optical fiber because of their higher sensitivity to Rayleigh scattering.
Responda
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Longer
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Shorter
Questão 35
Questão
_____________ wavelengths are more sensitive to bending loss.
Responda
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Longer
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Shorter
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