Ep. 62 | Fiber Technology, Testing & Troubleshooting Basics Quiz

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Ep. 62 | Fiber Technology, Testing & Troubleshooting Basics Quiz

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Which of the following explains the difference between Singlemode and Multimode fiber? *

10 points

A.) Singlemode is one fiber, multimode is two or more fibers.

B.) Singlemode propagates light in one mode, transmitted by LASER and Multimode propagates light in more than one mode, transmitted by LED or VCSEL.

C.) Singlemode has a 9 micron core diameter, while multimode typically has a 50 or 62.5 micron core diameter.

D.) Both B & C are correct.

In its simplest form, Optical Loss Testing is:
*

10 points

A.) Measuring the length of the fiber to see how much length was lost after cutting from the spool, installing and terminating.

B.) Measuring the absolute power of the light source via a Test Reference Cord (TRC).

C.) Using an Optical Power Meter (OPM) to measure the output power of the Optical Light Source (OLS) via a Test Reference Cord (TRC), then comparing that measurement with the power measured at the far end of the fiber with the same light source connected to near end of the fiber under test. The difference between the two measurements is the Optical Loss (attenuation).

Why is Optical Loss important?

10 points

A.) Because we need to know how many photons went missing from one end of the fiber to the other.

B.) Network equipment transmitting data over optical links requires a reliable communication link.

C.) Fiber will not work unless you first measure the Optical Loss.

For determining application compatibility of installed fiber, which type of Optical Loss Testing is recommended?

10 points

A.) Loss Budget test limit.

B.) Standards-based test limit.

For mated connector pairs on each end of the installed fiber, ANSI/TIA-568.3-E Standard specification for allowable loss of REFERENCE grade is:

10 points

A.) 0.75dB/mated pair.

B.) 0.05dB/mated pair.

C.) 1.00dB/mated pair.

D.) 0.50db/mated pair.

Additional recommended equipment to help ensure successful testing includes:
*

10 points

A.) Connector cleaning system.

B.) Visual Fault Locator (VFL).

C.) Visual Inspection scope/probe.

D.) Spare Test Reference Cords (TRCs).

E.) All of the above.

For testing the typical installed fiber optic link (panel to panel), which Set Reference method should be used prior to testing?

10 points

A.) One Jumper.

B.) Two Jumper.

C.) Three Jumper.

D.) Setting Reference is not needed as long as the Optical Loss Test Set is within its calibration period.

Which of the following is the MOST common cause of Optical Loss Test failure?

10 points

A.) Dirty or damaged connector.

B.) The cable was damaged during installation.

C.) Wrong Test Reference Cords.

D.) The test was performed on the wrong fiber.

True or False? An OTDR by itself is considered Certification of the fiber and an Optical Loss Test is not required so long as an OTDR trace has been performed.

10 points

A.) True

B.) False

Successful testing depends on proper use of test equipment being used and relies upon:

10 points

A.) Properly trained technician.

B.) Correct test set up, including appropriate Test Reference Cords.

C.) Clean connectors.

D.) All of the above.

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