6-Testing and troubleshooting

Descripción

(Class Quiz) Class quiz Test sobre 6-Testing and troubleshooting, creado por Jeanie Fitzgerald el 25/07/2017.
Jeanie Fitzgerald
Test por Jeanie Fitzgerald, actualizado hace más de 1 año
Jeanie Fitzgerald
Creado por Jeanie Fitzgerald hace casi 7 años
61
2

Resumen del Recurso

Pregunta 1

Pregunta
Testing should be performed using an organized systematic method. Which of the following is Phase 1 method
Respuesta
  • Specification and visual verification
  • Testing with various equipment as required for each type of cable
  • Documentation

Pregunta 2

Pregunta
Testing should be performed using an organized systematic method. Which of the following is Phase 2 method
Respuesta
  • Specification and visual verification
  • Testing with various equipment as required for each cable
  • Documentation

Pregunta 3

Pregunta
Testing should be performed using an organized systematic method. Which of the following is Phase 3 method
Respuesta
  • Specification and visualization
  • Testing with various equipment required per cable
  • Documentation

Pregunta 4

Pregunta
Troubleshooting a problem in a customers cabling system involves, Check all that apply
Respuesta
  • Verify and isolate the problem
  • repair and retest to ensure functionality
  • alienate or confuse person being questioned

Pregunta 5

Pregunta
Troubleshooting is an __________________ process
Respuesta
  • tedious
  • investigative
  • technical

Pregunta 6

Pregunta
These types of test equipment are used for which of the following, (wire map, multimeter, TDR, butt set, inductive amplifier,...
Respuesta
  • optical fiber media
  • copper media

Pregunta 7

Pregunta
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
Respuesta
  • ANSI/TIA 1152
  • ISO/IEC 11801
  • NEC/NFPA

Pregunta 8

Pregunta
What is the frequency range for Category 6a
Respuesta
  • 250 MHz
  • 500 MHz
  • 600 MHz

Pregunta 9

Pregunta
Nominal velocity of propagation ( NVP) is used to determine
Respuesta
  • length
  • delay skew
  • wire map

Pregunta 10

Pregunta
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.
Respuesta
  • NVP
  • NEXT
  • ACRF

Pregunta 11

Pregunta
Factory calibration may be required every 18 months for certification test sets.
Respuesta
  • True
  • False

Pregunta 12

Pregunta
A good rule of thumb is to perform the field calibration at least_________ or ______________ a new series of tests. (Check all that apply)
Respuesta
  • once a day
  • before beginning
  • monthly

Pregunta 13

Pregunta
An *PASS or *FAIL is often referred to as the _________ _________ or a __________ ___________ . Check all that apply
Respuesta
  • uncertainty zone
  • marginal condition
  • reference dimension

Pregunta 14

Pregunta
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
Respuesta
  • velocity of propagation
  • delay skew
  • return loss

Pregunta 15

Pregunta
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.
Respuesta
  • Excessive near end crosstalk ( NEXT )
  • Attenuation to crosstalk ratio ( ACR )
  • High Insertion loss

Pregunta 16

Pregunta
___________ is the unwanted signal coupling between pairs, It is measured at the end of a cable nearest the point of transmission.
Respuesta
  • Insertion loss
  • Attenuation to cross talk (ACR)
  • Near end cross talk (NEXT)

Pregunta 17

Pregunta
__________________ is a ratio of the outgoing signal to the power of the reflected signal expressed in dB.
Respuesta
  • Attenuation
  • delay skew
  • return loss

Pregunta 18

Pregunta
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.
Respuesta
  • True
  • False

Pregunta 19

Pregunta
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
Respuesta
  • polarity
  • attenuation
  • length

Pregunta 20

Pregunta
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
Respuesta
  • VFL
  • OLTS
  • OTDR

Pregunta 21

Pregunta
Acceptance testing is accomplished by using which of the folowing
Respuesta
  • VFL
  • OLTS
  • OTDR

Pregunta 22

Pregunta
This tool is used to inspect the end face of the optical fiber connector for radius of curvature, offset of polish and optical height.
Respuesta
  • Microscope
  • Interferometer
  • VFL

Pregunta 23

Pregunta
Microscopes greater than 200x power, tend to make the smallest defect look much worse than it actually is.
Respuesta
  • True
  • False

Pregunta 24

Pregunta
For bi-directional testing at both wavelengths at one time the test instrument to be used is
Respuesta
  • OLTS
  • OTDR
  • Interferometer

Pregunta 25

Pregunta
A current certificate of calibration of the tester may be required as part of the projects documentaion requirements.
Respuesta
  • True
  • False

Pregunta 26

Pregunta
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.
Respuesta
  • True
  • False

Pregunta 27

Pregunta
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.
Respuesta
  • 3.5, 1.5
  • 0.75, 0.5
  • 0.5, 0.3

Pregunta 28

Pregunta
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.
Respuesta
  • True
  • False

Pregunta 29

Pregunta
Bandwidth for optical fiber circuits cannot be measured in the field or proven through calculations by installer.
Respuesta
  • True
  • False

Pregunta 30

Pregunta
The _______ jumper method is the preferred referencing method for most installed optical fiber systems.
Respuesta
  • two, formerly Method A
  • one, formerly Method B
  • three, formerly Method C

Pregunta 31

Pregunta
This tester locates and detects faults and determines the amount of signal loss at any point in the optical fiber.
Respuesta
  • OLTS
  • OTDR
  • VFL

Pregunta 32

Pregunta
The OTDR trace ___________ replace the need for the OLTS testing.
Respuesta
  • does
  • does not

Pregunta 33

Pregunta
This tester uses Rayleigh scattering and Fresnel reflection to measure characteristics of an optical fiber.
Respuesta
  • OLTS
  • OTDR
  • Interferometer

Pregunta 34

Pregunta
_______________ wavelengths of light exhibit greater amounts of attenuation in the same optical fiber because of their higher sensitivity to Rayleigh scattering.
Respuesta
  • Longer
  • Shorter

Pregunta 35

Pregunta
_____________ wavelengths are more sensitive to bending loss.
Respuesta
  • Longer
  • Shorter
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