After taking the test, you may print your answers for reference or to turn in as
homework.
True/False Indicate whether the statement is true
or false.
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1.
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Cables tested with an OTDR do not require insertion loss testing with a light
source and power meter or OLTS.
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2.
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Connectors at each end of the cable plant should not be counted when calculating
the cable plant loss.
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3.
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The OTDR should never be used without a "launch cable" which is also
called a "pulse suppressor."
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Multiple Choice Identify the choice that best
completes the statement or answers the question.
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1.
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Cable plant loss should be estimated during the __________ phase.
A. | Design | B. | Installation | C. | Testing | D. | Troubleshooting |
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2.
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The US standard method of testing installed singlemode cables in a cable plant
is described in __________.
A. | FOTP-34 | B. | ISO 11801 | C. | FOTP-57 | D. | OFSTP-7 |
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3.
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What test instrument(s) are used for insertion loss testing?
A. | OLTS or light source and power meter | B. | VFL | C. | OTDR |
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4.
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Singlemode fiber optic cables are tested with __________ sources at __________
and __________ wavelengths.
A. | LED, 650, 850 nm | B. | LED, 850, 1300 nm | C. | Laser, 980, 1400
nm | D. | Laser, 1310, 1550 nm |
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5.
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What type of source is generally used for testing multimode fibers?
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6.
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How many methods are included in standards for setting the ‘0 dB‘
reference for loss testing?
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7.
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Patchcords can be tested to verify the connectors on each end individually by
_________________?
A. | Single-ended testing | B. | Double-ended testing | C. | OTDRs | D. | Visual fault
locators |
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8.
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Reference cables must match the __________ of the cables being tested.
A. | Fiber size and type | B. | Fiber size and connector
type | C. | Connector type | D. | Fiber size and loss
specification |
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9.
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The total loss of the fiber in the cable plant is calculated by multiplying the
attenuation coefficient of the fiber by the __________.
A. | Length | B. | Number of links | C. | Number of
connectors | D. | Number of splices |
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10.
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The principle of operation of OTDRs is similar to __________ .
A. | Power meters and sources | B. | Radar | C. | Mirrors | D. | Lenses |
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11.
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In long distance applications, OTDR distance measurement accuracy is
limited by their __________.
A. | Output power | B. | Distance capability | C. | Calibration of fiber
index of refraction | D. | Software |
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12.
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Chromatic dispersion can be tested using an OTDR because __________.
A. | An OTDR can measure the round trip time differences at each
wavelength | B. | Chromatic dispersion affects backscatter | C. | The OTDR receiver is
sensitive to the wavelength of light | D. | OTDRs test at multiple
wavelengths |
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13.
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In long distance applications intended for wavelength division multiplexing, a
______ test is used to verify fiber performance over all wavelengths.
A. | Dispersion | B. | Spectral attenuation | C. | OTDR | D. | VFL |
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Multiple Response Identify one or more choices
that best complete the statement or answer the question.
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1.
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OTDRs are used in outside plant cables to __________.
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