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Nt1310 Final Study Guide

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NT1310 - Final Study Guide
393 Know what tools are required to terminate a twisted pair cable?
Cable, connectors, stripping tool, crimping tool.
417 What role does a fiber microscope play in the termination and installation of a fiber cable?
Allows you to look at the end of the optics for any flaws that may cause problems
452 What are the different causes for crosstalk ?
Inferior, inferior components, improper patch cable, split pairs, couplers, twisting, sharing cables
455 What are the various bits of information for a Request of Proposal?
Goals, expectations and terms of the engagement
471 Know the various items to consider when selecting a contractor for a structured cabling project?
Balance between cost and performance, engineering design and innovative solutions, proven expertise, quality, conformance to codes
498 What is refraction?
The bending of light from one material to another
502 Know some history as to the implementation of a fiber trunk in a commercial format
1977 full scale commercial application, AT&T and GTE
505 What are some differences between fiber and copper cabling?
Fiber made of glass or plastic, more data transfer, faster data transfer
510 Why is digital signaling better than analog?
Not affected by noise or attenuation.
538 What are the various components of a fiber cable
Core, cladding, coating
542 What is tensile strength
The amount of pressure the wire can take before it breaks

543 What are the different methods for making a fiber strand
Modified chemical vapor deposition, outside vapor deposition, vapor axial deposition, plasma chemical vapor deposition
554 What is dispersion and how does it affect an optical transmission?
Spreading of light as it travels through the optics.
562 What is attenuation
Loss of optical power as the signal travels through the fiber
565 What is a micro-bend and what causes it
Small distortions of the boundary layer between the core and cladding caused by pressure or crushing.
566 How does numerical aperture affect fiber transmission
Expresses the light gathering ability of the fiber.
578 What are good work habits and why do we need them
Most effective way to work safely.
584 What is laser safety?
Treating the fiber as if it is always turned on
585 What methods can be used to pick up your fiber cabling once it is cleaved.
Create a barrier around workplace, use alight to locate fibers, piece of adhesive tape
586 What chemicals with respect to fiber terminations are safe to work with?
Isopropyl alcohol. Solvents, anaerobic epoxy
589 What should be your first response when there is a site emergency on a job?
Remain calm
591 What is the purpose of the cable sheath
To help protect the cable
593 What considerations are given to selecting a fiber type
Tensile strength, temperature range, bend radius, flammability, buffer type, jacket type, weight, armor, crush resistance

596 What are the different types of strength members for a fiber trunk
Kevlar, fiberglass rode, steel
599 What is the purpose of a patch cable (cordage)
Used in connections to equipment with patch panels
609 What are the three types of fiber cables
Nonconductive, conductive, composite
612 What are the different pieces of information that can be found on a cable sheath?
Manufacturers information, cable part number, date of manufacturing, fiber type, cable length
617 When does a contractor need to splice a cable
Damaged cable, length of cable, different cable types
618 What aspects about a splice job can affect the performance of the fiber cable once the job is complete?
Numerical aperture mismatch, core diameter mismatch, mode field diameter mismatch, cladding diameter mismatch, concentricity, noncircularity
624 What tools / equipment is needed to complete a fiber splice?
Cleaning materials, cleavers, mechanical splice, fusion splice
642 When is mechanical splicing used as compared to fusion splicing?
Cost, and application
645 What reasons would an installer use a connector to terminate a fiber strand as compared to splicing it?
Allows the wire to be connected to equipment or other fibers
667-679 What tools / equipment are needed to terminate a fiber connector?
Shears, stripper, scribe, polishing puck, lint free wipes, cleaning fluid, alcohol, cleaver, nonreflective mat, safety glasses, tweezers, optical fiber disposal container, crimper, eye loupe, rubber pad, cure adapter, curing over, epoxy, abrasives
698-699 When do you use an LED transmitter as compared to a Laser?
Short distances, and cheaper cost
707 What are some of the limitation of fiber transmission toady?
The light source limits the bandwidth
727 What are the various sub-assemblies of a fiber receiver?
Electrical, optical
740 What are some aspects of a Passive Optical network to consider when installing this type of network?
Center wavelengths, bandwidth, insertion loss, excess loss, polarization dependent loss, return loss
741 - 763 What are the major components of a Passive Optical network?
Tee coupler, star coupler, optical switches, optical attenuators, and optical isolator, and wavelength division multiplexing, optical amplifier, optical filters
(Couplers, Switches, Optical Attenuators, Optical Isolators, Optical Amplifier, Optical Filter)
763 Be familiar with the purpose of an Optical Filter
Selectively permits transmission or blocks transmissions
771 What are the various FTTX networks discussed by our text?
Fiber to the home, fiber to the building, fiber to the curb, fiber to the node
772 What cables are required to provide a fiber FTTX PON?
Feeder, distribution, drop cables
777 When installing a fiber cable what aspects are to be considered
Minimum cable bend radius, maximum cable tension rating, fill ratio for a multiple cable conduit installation
782 What tools / equipment are used when installing a fiber cable
Pulling eye, pull box, splice enclosures, patch panels,
804 What are some advantages does a fiber-based communication have over a copper-based one. bandwidth, attenuation, EMI, size, weight, safety and security
810 Does EMI affect a fiber transmission? no 834 What is the purpose of a visual fault locator
Identify breaks or macrobends, poor fusion splice
840 What two pieces of test equipment are required to test fiber
Light source and optical power meter
867 What information does an OTDR provide and what should you include in your results to your customer?
Date of testing, number of fiber tested, test procedure number, make model, serial number of OTDR, pulse width, range and resolution, number of averages, wavelengths, launch conditions
872 What type of tools are needed to inspect a connector
Inspection microscope, cleaning, continuity tester, visual fault locator, fiber identifier,
893 What types of information will help you in resolving a cable problem?
What the problem is, when the problem started, last thing done to the system.

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