QUIZLET Flashcards by carlos yepez

WHAT IS THE NAME OF A MATERIAL THAT CAN CARRY AN ELECTRICAL CHARGE FROM ONE POINT TO ANOTHER?

ELECTRICAL CONDUCTOR

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WHAT IS USED AS A REFERENCE VALUE OF 100% CONDUCTIVITY?

ANNEALED COPPER

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WHAT PROCESS HAS ANY ADVERSE EFFECT ON CONDUCTIVITY OF PURE COPPER?

ALLOYING COPPER

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ADVANTAGE OF SOLID CONDUCTOR?

BETTER TRANSMISSION

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ADVANTAGE OF STRANDED CONDUCTOR?

*MORE FLEXIBLE
*LONGER LIFE
*LESS SUSCEPTIBLE TO DAMAGE DURING CRIMPING

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WHAT IS AWG?

AMERICAN WIRE GAUGE

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WHERE IS AWG ACCEPTED ?

WORLD WIDE

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WHERE WILL PVC AND PE CABLE BE USED ?

*PVC IS USED INDOORS
*PE IS USED OUTSIDE FOR OSP CABLE

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TEFLON IS TRADE MARK OF ____?

DUPONT

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What direction is twisted parrot cable twisted and what twist rate

Counterclockwise at 1/2 rate

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At what temperature would attenuation increase in copper cabling?

68°

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Where will higher temperature be routinely encountered?

Inside building walls, ceiling, space, and mechanical rooms

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What is the proper name of a solid wall metal tube and what is it used for?

Conduit and best possible shield

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Drain wires are usually?

Applied longitudinally

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AN analog signal is in the form of_____?

Wave

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What is the most fundamental example of an analog signal?

SINUSOID

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What is the frequency range of human hearing?

20HZ-20KHZ

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What is the frequency range of voice circuits?

300-3400 HZ

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What is the value of 1KHZ?

1000 HZ

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WHOSE THEORY IS THE SINUSSOID SIGNAL

JOSEPH FOURIER

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What is the speed of light?

186000 MILES PER SECOND

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What is the symbol that represents the speed of light?

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What is the speed of light within a cable?

.5C to .74C

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What is the minimum cable standard for telephony performance?

CAT5E AND CAT6

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What do you call a digital signal change from one state to another?

DISCRETE STEPS

WHAT TYPE OF TELECOMMUNICATION SYSTEM TYPICALLY COMBINES BINARY DATA FROM SEVERAL DIFFERENT SOURCES INTO A SIGNAL COMPOSITE BITSTREAM( COMBINES MANY SOURCES INTO 1 BITSTREAM SIGNAL)?

TIME DIVISION MULTIPLEXING ( TMD )

THE TERM BAUD IS USED WHEN DISCUSSING WHAT?

MODEMS

WHAT IS A TERM USED TO DESCRIBE THE TRANSMISSION OF SIGNALS IN ONE DIRECTION ONLY ? ONE DIRECTION AT A TIME

HALF DUPLEX

WHAT IS A TERM USED TO DESCRIBE THE TRANSMISSION OF SIGNALS IN ONE DIRECTION ONLY ? BOTH DIRECTION AT THE SAME TIME ?

FULL DUPLEX

WHAT IS A TERM USED TO DESCRIBE THE TRANSMISSION OF SIGNALS IN ONE DIRECTION ONLY ?

SIMPLEX

What type of circuit connects three information channels, high-speed downstream channel medium speed, duplex channel, and pots channel?

ADSL CIRCUIT

What is signal interference between cable Pairs , which may caused by picking up unwanted signals from other pairs or nearby cables?

CROSSTALK

What is the maximum allowance length of data link?

295 feet ( 90 M )

What is the maximum allowance length of a patch of cable at the end of a link?

16 Feet ( 5M )

How do you define a cable channel?

A channel is a compromised of a link cable and the patch cables?

WHAT IS A DATA LINK CABLE?

HORIZONTAL CABLE ( CABLE BETWEEN DATA JACK AND PATCH PANEL)

WHAT IS THE MAXIMUM RECOMMENDED LENGTH OF A CHANNEL?

328 ft ( 100 m )

WHAT IS THE FREQUENCY OF CAT3?

16 MHZ

WHAT IS THE FREQUENCY OF CAT5?

100 MHZ

WHAT IS THE FREQUENCY OF CAT5e?

100 MHZ or 350 MHZ

WHAT IS AN IMPEDANCE MATCHING DEVICE ? THIS DEVICE IS REQUIRED WHENEVER A TRANSITION IS MADE FROM ?

BALUN TO TRANSITION TWISTED PAIR( COPPER) TO COAX

WHAT ARE TWO TRANSITION MEDIUMS MOST OFTEN ENCOUNTERED IN TELECOMMUNICATION CABLING ?

COPPER & FIBER

WHAT ARE THREE MAJOR TYPE OF LIGHT SOURCES ?

*LEDS *SHORT WAVELENGTH LASERS *BANDWIDTH REQUIRED

WHAT DOES THE DESIGNER HAVE TO CONSIDER WHEN DECIDING WHAT CORE SIZE FIBER TO USE?

*ACTIVE EQUIPMENT *DISTANCE SIGNAL IS TRAVELING *BANDWIDTH REQUIRED

WHAT LIGHT SOURCE ARE TYPICALLY ASSOCIATED WITH MULTIMODE OPTICAL FIBER ?

LEDS & VCSEL

FIBER MICRON OM1?

62.5 MICRON MULTIMODE

FIBER MICRON OM2

50 MICRON MULTIMODE

FIBER MICRON OM3

50 MICRON MULTIMODE, LASER ,2000MHZ BANDWIDTH

FIBER MICRON OM4

50 MICRON MULTIMODE, LASER ,4700MHZ BANDWIDTH

WHAT FIBER CLASS UTILIZE A LASER LIGHTSOURCE AND HAS 2000MHZ BANDWIDTH?

OM3

WHAT FIBER CLASS USED FOR DATA CENTER?

OM4

WHAT FIBER CLASS DESIGNED FOR LOW WATER PEAK?

OS2

WHAT IS DISPERSION?

Light loss

THE MAXIMUM OPTICAL FIBER DISPERSION IS USUALLY EXPRESS IN?

PICOSECONDS

THE CHROMATIC AND MODAL LIGHT LOSS DISPERSION CHARACTERISTICS ARE ASSOCIATED WITH WHAT TYPE OF FIBER ?

MULTIMODE

THE TWO MAJOR CLASSIFICATIONS OF OPTICAL FIBER ARE WHAT?

MULTIMODE SINGLEMODE

WHAT ARE WAVELENGTHS AREAS THAT ARE MOST SUITABLE FOR OPTICAL COMMUNICATION?

WINDOWS

WHAT ARE TWO FREQUENCY RANGE OF MULTIMODE FIBER ?

MULTIMODE 850 NM & 1300 NM

WHAT ARE TWO FREQUENCY RANGE OF SINGLEMODE FIBER ?

SINGLEMODE 1310 NM & 1550 NM

WHAT DOES OTDR MEAN ?

OPTICAL TIME DELAY REFLECTOMETER

WHAT DOES OTDR DO?

TROUBLESHOOTS FIBER

WHAT DEVICE DO YOU USE FOR OTDR?

POWER METTER

THE BANDWIDTH FOR AN OPTICAL FIBER CAN ONLY BE VERIFIED?

CAN ONLY BE DONE BY THE MANUFACTURER NOT IN THE FIELD

RUNNING FIBER FROM BUILDING A TO BUILDING B HAS A TOTAL FIBER LOSS OF _______?

4.35 DB

WHAT IS THIS CALLED ?

LINK LOSS BUDGET

HOW MUCH DB LOSS FOR LASER TRANSMITTER ?

3 DB

WHAT IS THE SIGNAL LOSS FOR FIBER CONNECTION?

.75 DB

HOW MUCH DB LOSS FOR LED TRANSMITTER?

2 DB

WHAT IS THE CONNECTION LOSS FOR FIBER SPLICE?

0.3DB

WHAT ARE TWO TYPES OF SPLICES ?

FUSION SPLICE( PERMANENT ) MECHANICAL SPLICE (FOR EMERGENCY)

HOW MANY SPLICES SHOULD THE DESIGNER ALLOW FOR IN THEIR REPAIR MARGIN?

NO MORE THAN TWO SPLICES

WHAT IS THE DATA RATE OF AN OCI CONNECTION ?

51.84 MB/SECOND

HOW MANY VOICE CHANNELS ARE THERE IN AN OC12 CONNECTION?

8064 CHANNELS

HOW MANY CHANNELS ARE IN DS1?

24 CHANNELS

HOW MANY CHANNELS ARE IN DS2?

96 CHANNELS

HOW MANY CHANNELS ARE IN DS3?

672 CHANNELS

WHERE IS VISIBLE LIGHT ON THE ELECTROMAGNETIC SPECTRUM ?

10 to the 15th POWER ( AKA 10 PETAHERTZ )

WHAT IS THE FREQUENCY OF A VISIBLE LIGHT?

1 PETAHERTZ

HOW DOES INTERFERENCE GET INSIDE OF EQUIPMENT?

INPUT SIGNALS LINES OUTPUT SIGNAL LINES POWER CORDS ( OR POWER INPUTS)

WHAT IS TE?

TELECOMMUNICATION ENCLOSURE ( A CASE )

A TE SERVES WHAT SIZE AREA?

3600 SQFT OR 36 work areas ( 1 WORK AREA= 100 SQFT)

WHAT IS A TR?

TELECOMMUNICATION ROOM ARCHITECTURAL SPACE ( PASSIVE SPACE )

WHAT IS A ER ?

EQUIPMENT ROOM (ENVIRONMENTALLY CONTROLLED)

WHERE DOES THE OSP UTILITY COME INTO THE BUILDING?

EF ( ENTRANCE FACILITY )

MINIMUM CEILING HEIGHT FOR TELECOMMUNICATION SPACE ?

8 feet

RECOMMENDED CEILING HEIGHT FOR TELECOMMUNICATION SPACE ?

10 feet

TYPICAL CLEARNANCE

3.28 feet

THE MINIMUM OF DEPTH OF EQUIPMENT OFF OF THE WALL IS ____?

6 inches

WHAT’S THE AMOUNT OF SIDE CLEARANCES IS REQUIRED FROM THE EQUIPMENT TO THE CORNERS ?

12 inches

SIZE

QUIZLET Flashcards

(90 cards)