Everything You Need To Learn About Telecommunications

Splice closures are used to slide over the splice to provide protection against a full range of environmental changes in aerial installations or below ground in vaults.

Splice closures are used to protect optical fibers and splices against a full range of environmental changes in aerial installations or below ground in vaults.

Splice closures are used to provide the transition between outdoor optical fiber to indoor fiber.

Splice closures are used to house electronics and spare cable, along with optical patch or splice panels.

Splice trays are designed to provide a stable work surface when splicing optical fiber.

Splice trays are designed to provide protection for mechanical splices, fusion splice protectors, and optical splitters as well as provide storage for the required fiber slack.

Splice trays are designed to provide storage and protection for buffer tubes as well as provide storage for the fiber slack required during splicing operations.

Splice trays are designed to provide storage of spare mechanical splices in case of network changes or for emergency restoration of damaged fiber-optic cable.

The top two rungs of any step ladder.

The top two rungs of any extension ladder.

The top two rungs of any combination ladder.

The top two rungs of any ladder.

Intensity; indirect; outgoing.

Amount; indirect; outgoing.

Amount; direct; incoming.

Intensity; direct; incoming.

The amplitude level must be adjusted.

The data must be encoded.

The lasers must be cooled.

The digital signals must be sampled at the same rate as the highest frequency.

Encoder, electrical interface, optical detector, optical interface.

Modulator, electrical interface, optical interface, optical laser.

Demodulator, electrical interface, optical detector, optical interface.

Demodulator, electrical interface, optical detector, optical laser.

Erbium-doped fiber amplifiers (EDFA).

Incoming light amplifiers (ILA).

Semiconductor optical amplifiers (SOA).

Raman amplifiers.

Optical regenerator.

Fused optical coupler.

Optical transponder.

Optical transport link.

Signal allocation.

Signal distribution.

Signal transport.

Signal proportion.

Electromagnetic interference levels.

Twisted-pair assignments.

Fiber assignments.

Current fiber-optic standards.

Between 1,480 and 1,500 nm

Between 1,539 and 1,565 nm

Between 1,260 nm and 1,360 nm

Between 1,550 and 1,560 nm

A bucket truck with a bucket large enough to provide a stable work surface that is large enough to accommodate the fusion splicer, tools, and the splice closure.

A well-lit location that is large enough for a table to accommodate the fusion splicer, tools, and the splice closure.

A controlled environment such as a splicing van, trailer, or tent and a stable work surface that is large enough to accommodate the fusion splicer, tools, and the splice closure.

A place to secure the splice closure and the fiber-optic cable that is large enough to accommodate the fusion splicer and tools.

To charge the UPS batteries in the event of a prolonged utility power interruption.

To provide AC power in the event of a prolonged utility power interruption.

To act as a buffer between commercial power and the UPS.

To boost the voltage provided by the UPS.

Multiplex each input by processing it through a digital-to-analog (D/A) converter.

Cause the dynamic range of the return path to be greatly decreased.

Use dense wavelength division multiplexing (DWDM) digital return transmitters in hub-to-headend architectures.

Use digital return transmitters that typically have four inputs.

Water causes the glass core of the optical fiber to disintegrate, tuning the optical fiber into a hollow tube.

Water causes the glass core of the optical fiber to change its properties from low water peak to high water peak.

Water causes the glass core of the optical fiber to become clear, which prevents the fiber from transporting a signal.

Water causes the glass core of the optical fiber to become opaque, which degrades the signal as it's transported through the fiber.

Line extender.

Fiber-optic node.

Distribution amplifier.

Coaxial cable.

A P2MP topology consists of a host element connected through a splitter or optical coupler to eight or more receiving elements.

A P2MP topology consists of a host element connected through a splitter or optical coupler to two or more receiving elements.

A P2MP topology consists of a host element connected through a splitter or optical coupler to four or more receiving elements.

A P2MP topology consists of a host element connected through a splitter or optical coupler to one or more receiving elements.

Changing the infrastructure all at once would create excessive network congestion.

Changing the infrastructure all at once would put a strain on equipment manufacturers.

Changing the infrastructure all at once would require too many new drops to be created.

Changing the infrastructure all at once would cause too many service disruptions.

Distributed star.

Home-run.

Point-to-point.

Star-bus.

Route the fiber-optic cable on new aerial poles.

Route the fiber-optic cable through new trenches.

Use a mixture of new poles and trenches.

Use the existing coaxial network infrastructure.

Tree map.

Design map.

Route map.

Key map.

Expanded troubleshooting capability.

Increased power consumption.

Smaller split ratios.

Shorter distances for transporting light waves.

Nonlinear operation resulting in distortion, back reflection, and signal loss.

Nonlinear operation resulting in distortion, data errors, and signal loss.

Nonlinear operation resulting in thermal noise, shot noise, and signal loss.

Nonlinear operation resulting in distortion, data errors, and responsivity.

It is 250 μm, with an accuracy of ±1 μm.

It is 225 μm, with an accuracy of ±1 μm.

It is 165 μm, with an accuracy of ±1 μm.

It is 125 μm, with an accuracy of ±1 μm.

They have looked at the cable jacket.

They have viewed the sticker on the inside of the access door.

They have read the project's specification records.

They have used the standardized color coding scheme.

Ribbon fiber requires the use of special patch panels.

Ribbon fiber is used where large-diameter cables are needed.

Ribbon fiber is used where low fiber counts are required.

Ribbon fiber requires different tools and equipment to perform splicing.

Rear boot and plug body.

The C-clip and adapter.

The ferrules and the mating adapter.

The adaptor and plug body.

The Telecommunications Industry Association (TIA).

The Society of Cable Telecommunications Engineers (SCTE).

The International Telecommunication Union (ITU).

The Institute of Electrical and Electronics Engineers (IEEE).

The emission of a number of discrete wavelengths or side modes.

The narrow emission pattern limits the power output.

The size and greater expense to operate.

The gain in the number of light photons.

Conversion of an electrical signal to an optical carrier, and demodulation of the modulated optical carrier.

Conversion of an optical carrier to an electrical signal, and modulation of the demodulated optical carrier.

Conversion of an optical carrier to a digital signal, and encoding of the digital signal to an analog signal.

Conversion of an optical carrier to an electrical signal, and demodulation of the modulated optical carrier.

Involves the use of a node transponder that continuously monitors a number of critical functions.

Is a completely separate function from generating an alarm when parameters exceed a preset threshold.

Involves monitoring the most critical functions except for temperature and a tamper switch mechanism.

By remote means is not critical for maintaining network stability and reliability.

A universally accepted standard for digital television that does not take into consideration audio storage, channel compression and decompression, transport or display.

A two-phase standard, with MPEG-1 being the most recognizable as related to data transport.

A universally accepted standard for digital television, first released in 1992.

Ten standards in one for the digitally coded representation of moving pictures.

Local ad insertion is performed usually by a video server.

Cable operators can replace only local TV ads with their own commercial content, such as upcoming pay-per-view (PPV) events or featured sales presentations.

Local advertising is broadcast in addition to all network commercials, so the network commercials aren't replaced.

Large three-quarter-inch tape decks are used to play local advertisements because of the digital programming.

The FAT is typically easier to install and has higher fiber counts than the FDH.

The FAT is typically installed in a cabinet and has higher fiber counts than the FDH.

The FAT is typically easier to install and has lower fiber counts than the FDH.

The FAT is typically installed in a cabinet and has lower fiber counts than the FDH

The buffer tubes should be secured with tie wraps so that there is no movement of the optical fibers inside the buffer tube.

The buffer tubes should be secured with cable clips to allow free movement without pulling or stressing the optical fibers.

The buffer tubes should be secured with tie wraps to allow slight movement without pulling or stressing the optical fibers.

The buffer tubes should be unsecured to allow free movement without pulling or stressing the optical fibers.

Cable clips hold optical splices in place in a splice tray.

Retaining clips hold optical splices in place in a splice tray.

Fast drying epoxy glue holds optical splices in place in a splice tray.

Tie wraps hold optical splices in place in a splice tray.

The ribbon splicer.

The profile alignment system (PAS) splicer.

The local injection and detection (LID) splicer.

The fixed V-groove splicer.

The distribution panel can be located anywhere in the facility since the distribution cable is larger in diameter than the outdoor cable and has less signal attenuation.

The distribution panel must be located within 15 meters (50 feet) of the entrance to the building since the distribution cable does not comply with indoor code requirements for riser or plenum installations.

The distribution panel must be located next to the OEE because the distribution cable has more signal loss.

The distribution panel can be located anywhere in the facility since the distribution cable complies with indoor code requirements for riser or plenum installations.

Check current temperature, humidity, and barometric pressures so that the appropriate settings on the fusion splicer can be adjusted to compensate.

Check that the alignment system of the fusion splicer, profile alignment system (PAS), or local injection and detection (LID) is compatible with the fiber to be fused together.

Check the fusion temperature of the fusion splicer to verify that the spliced fibers are fused at the optimal temperature of the optical fiber.

Make a number of test splices to set up the fusion splicer and to verify the instrument's settings and calibration for both the environment and the type of fiber to be spliced.

The profile alignment system (PAS) method.

The local injection and detection (LID) method.

The estimate of system loss (ESL) method.

The fixed V-groove method.

During high wind, the fiber-optic cable will begin to swing.

The buildup of lethal amounts of static electricity on the fiber-optic cable that can discharge through a person on a ladder or some other conductor connected to ground.

The weight of the fiber-optic cable could pull the poles down.

Harmful light energy could be emitted from the cable affecting aircraft pilots.

Strength members and buffer strings.

Strength members and buffer tubes.

Armor and buffer strings.

Rip cord strings and buffer tubes.

A dynamometer.

A Kellems grip.

A ratcheting grip.

A break-away swivel.

Acceptance test results and refractive index.

Cable pulling tension and acceptance test results.

Cable pulling tension and cable bend radius.

Acceptance test results and cable bend radius.

Optical fiber.

Modulated light wave.

Optical receiver.

Optical transmitter.

Indirect.

Disproportionate.

Coherent.

Direct.

The temporal spreading of the transmission signal pulses and results in dispersion at a higher bit rate.

The temporal spreading of the transmission signal disperses at a higher bit rate and results in pulsing.

The optical output from multiple lasers operating at different wavelengths is combined and transported over a single, common optical fiber.

The optical output from a single, common laser operating at different wavelengths is transported over multiple optical fibers.

It's a sub-layer of network architecture that describes how the network elements communicate between the signal source and the network termination elements.

It's a sub-layer of network architecture that describes the physical and logical configuration of connected elements between the signal source and the network termination elements.

It's a parent-layer of network architecture that describes how the network elements are physically connected between the signal source and the network termination elements.

It's a parent-layer of network architecture that describes the physical and logical configuration of connected elements between the signal source and the network termination elements.