CCT4 Cdv+active
CCT4
- 1.
WHAT IS THE CUMULATIVE LEAKAGE INDEX (CLI)
- A.
48-76
- B.
47-76
- C.
46-77
- D.
47-86
Correct Answer
B. 47-76 -
- 2.
WHAT IS THE SIGNAL LEAKAGE LIMITS
- A.
3 METERS ABOUT 10 FEET AT 5-54MHZ TO 216 MHZ
- B.
30 METERS ABOUT 10 FEET AT 5-54MHZ TO 216 MHZ
- C.
20 METERS YVM OR GREATER AT 30 METERS
- D.
15 MIRCOVOLTS PER METER OR GREATER AT 30 METERS
Correct Answer
A. 3 METERS ABOUT 10 FEET AT 5-54MHZ TO 216 MHZ -
- 3.
UNWANTED SIGNAL ENTERING THE NETWORK CAN CREATE A NUMBER OF PATTERNS ON THE TV.
- A.
HUM
- B.
DOCSIS
- C.
BEATS
- D.
GHOSTING
Correct Answer
C. BEATS -
- 4.
APPEARS WHEN INGRESS ALLOWS A LOCALLY BROADCAST TV CHANNEL'S SIGNAL TO ENTER THE TV ALONG WITH THE CHANNEL SUPPLIED BY THE NETWORK.
- A.
LEADING GHOST
- B.
FOLLOWING GHOST
- C.
CROSS BOW
- D.
TRAPPING
Correct Answer
A. LEADING GHOST -
- 5.
USUALLY CAUSED BY A REFLECTION ON THE CABLE SYSTEM CAUSED BY POOR RETURN LOSS AT THE REFLECTING DEVICE AND POOR DIRECTIVITY AT THE TAP OR DEVICE.
- A.
FOLLOWING GHOST
- B.
LEADING GHOST
- C.
BEATS
- D.
RETURN LOSS
Correct Answer
A. FOLLOWING GHOST -
- 6.
USUALLY CAUSED WHEN THE SAME CHANNEL FROM TWO (OR MORE) DIFFERENT TV STATIONS IS RECEIVED BY THE SAME ANTENNA.
- A.
HUM
- B.
LEADING GHOST
- C.
FOLLOWING GHOST
- D.
CO-CHANNEL INTERFERENCE.
Correct Answer
D. CO-CHANNEL INTERFERENCE. -
- 7.
THE RETURN DIRECTION CAN SUFFER INGRESS FROM TRANSMITTERS OPERATING IN THE UPSTREAM FREQUENCY BANDWIDTH (SUCH AS VOCIE OF AMERICA, CB, AND RADIO TRANSMITTERS.
- A.
RETURN PATH INTERFERENCE.
- B.
SPECTRUM
- C.
ZERO BEATS
- D.
INTERFERENCE
Correct Answer
A. RETURN PATH INTERFERENCE. -
- 8.
A METHOD OF RECEPTION USING AN RF CURRENT OF PROPER MAGNITUDE AND PHASE RELATION SO THE RECEIVED VOLTAGE IS THE SAME NATURE AS THE ORIGINAL WAVE.
- A.
ZERO BEATS
- B.
MHZ
- C.
TEMPO
- D.
PACE
Correct Answer
A. ZERO BEATS -
- 9.
THE TEMPERATURE OF THE DEVICE INCREASES OR DECREASES, THE ELECTRON ACTIVITY (VOLTAGE) ALSO INCREASES OR DECREASES, PRODUCING MORE OR LESS NOISE.
- A.
THERMAL NOISE
- B.
HEART BEAT
- C.
CABLE BILL
- D.
TV
Correct Answer
A. THERMAL NOISE -
- 10.
A 75-OHM COAXIAL CABLE INFINITELY LONG OR TERMINATED AT ITS OTHER END.
- A.
CARRIER-TO-NOISE RATIO.
- B.
SIGNAL -TO-NOISE
- C.
VOLTAGE CARRIER
- D.
BACKGROUND NOISE
Correct Answer
A. CARRIER-TO-NOISE RATIO. -
- 11.
UNDESIRED CHANGE IN THE WAVEFORM OF A SIGNAL
- A.
DISTORTIONS
- B.
NOISE
- C.
APPLICATIONS
- D.
AMPLIFIERS
Correct Answer
A. DISTORTIONS -
- 12.
LITERALLY FROM ONE CHANNEL TO ANTHER.
- A.
LIGHT
- B.
ACTIVE DEVICES
- C.
AMPLIFIER
- D.
CROSS MODULATION (XMOD)
Correct Answer
D. CROSS MODULATION (XMOD) -
- 13.
FREQUENCY ALLOCATION IS USED FOR RF CARRIERS IN THE FOWARD AND RETURN PATH.
- A.
5MHZ-42MHZ
- B.
5MHZ-45MHZ
- C.
4MHZ-46MHZ
- D.
5MHZ-43MHZ
Correct Answer
A. 5MHZ-42MHZ -
- 14.
APPEARS AS A HORIZONTAL BAR MOVING FROM THE BOTTOM TO THE TOP OF THE PICTURE.
- A.
HUM MODULATION
- B.
BEATS
- C.
WAVE LENGHT
- D.
CROSS MODULATION
Correct Answer
A. HUM MODULATION -
- 15.
A CARRIER TO HUM RATIO
- A.
5-17DB
- B.
3%-40DB
- C.
30DB-1%
- D.
30 DB-3%
Correct Answer
D. 30 DB-3% -
- 16.
WHERE THE CARRIER IS SHIFTED IN 90-DEGREE STEPS
- A.
QPSK
- B.
KEYING
- C.
DIAGRAM
- D.
DELIVERY
Correct Answer
A. QPSK -
- 17.
A DIGITAL MODULATION SCHEME THAT ALLOW 2 CHANNELS OF INFORMATION TO BE TRANSMITTED AT THE SAME TIME.
- A.
QAM
- B.
QPSK
- C.
ACTIVE
- D.
RATIO
Correct Answer
A. QAM -
- 18.
MEASURE THE SIGNAL STRENGTH RELATIVE TO BACK GROUND NOISE IN ANALOG AND DIGITAL COMMUNICATIONS.
- A.
SIGNAL-TO-NOISE RATIO
- B.
UPSTREAM NOISE
- C.
SIDEWAYS NOISE
- D.
LOW NOISE AMP
Correct Answer
A. SIGNAL-TO-NOISE RATIO -
- 19.
UNUSED PORTION OF A MULTI-CHANNEL SYSTEM WHEN THERE IS RANDOM ACTIVITY IN THE ACTIVE CHANNELS.
- A.
NOISE POWER RATIO.
- B.
SIGNAL NOISE
- C.
BACKGROUND NOISE
- D.
RATIO NOISE
Correct Answer
A. NOISE POWER RATIO. -
- 20.
MEASURES THE RATIO OF THE ERROR POWER TO THE AVERAGE POWER IN THE IDEAL QAM SIGNAL.
- A.
QAM RATIO
- B.
MRA
- C.
MODULATION ERROR RATIO. (MER)
- D.
DEGRADATION MARGIN
Correct Answer
C. MODULATION ERROR RATIO. (MER) -
- 21.
MEASURES THE RATIO OF THE ERROR POWER TO THE AVERAGE POWER IN THE IDEAL QAM SIGNAL.
- A.
MODULATION ERROR RATIO. (MER)
- B.
MRA
- C.
QAM RATIO
- D.
DEGRADATION MARGIN
Correct Answer
A. MODULATION ERROR RATIO. (MER) -
- 22.
A METHOD WHERE ADDITIONAL DATA DITS ARE ADDED TO THE DIGITAL VIDEO BIT STREAM TO HELP IDENTIFY AND CORRECT ANY ERROES.
- A.
FEC
- B.
FSC
- C.
FECC
- D.
FEMA
Correct Answer
A. FEC -
- 23.
MEASURES HOW OFTEN AN ERROR OCCURS IN A GIVEN AMOUNT OF DATA.
- A.
BER
- B.
BEA
- C.
BAT
- D.
BRE
Correct Answer
A. BER -
- 24.
INGRESS IS DEFINED AS A CONDITION WHERE INTERFERING SIGNALS LEAK INTO THE CABLE NETWORK.
- A.
TAP
- B.
DROP SYSTEM
- C.
TRAP
- D.
DROP INGRESS MITIGATION
Correct Answer
D. DROP INGRESS MITIGATION -
- 25.
THE UNWANTED SPIKES OF ENERGY IN THE SPECTRUM.
- A.
PEAK HOLD
- B.
HOLD OUT
- C.
SPECTRUM HOLD
- D.
ADJUST
Correct Answer
A. PEAK HOLD -
- 26.
A FILTER THAT PASSES HIGH FREQUENCIES WELL, BUT ATTENUATES (OR REDUCES) FREQUENCIES LOWER THAN THE CUT-OFF FREQUENCIES, ALSO USED IN AUDIO APPLICATIONS.
- A.
HIGH PASS FILTER
- B.
LOWER PASS FILTER
- C.
MID FILTER
- D.
MIDDLE PASS FILTER
Correct Answer
A. HIGH PASS FILTER -
- 27.
FOWARD SIGNALS THAT ARE DISTRIBUTED THROUGHOUT THE NETWORK, PROBLEMS IN THE RETURN PATH ARE ADDITIVE.
- A.
FUNNELING EFFECT
- B.
FCC
- C.
RETURN PATH
- D.
DOWN STREAM
Correct Answer
A. FUNNELING EFFECT -
- 28.
TO ENSURE THAT THE CABLE SYSTEMS FORWARD SIGNALS MEET FCC STANDARDS AS OUTLINED IN CFR 47, PART 76
- A.
PROOF OF PERFORMANCE
- B.
LIMITED PROOF
- C.
PURPOSE
- D.
PERFORM TEST
Correct Answer
A. PROOF OF PERFORMANCE -
- 29.
TO TROUBLESHOT A CONTINUOUS SIGNAL OUTPUT AT A FREQUENCY IN THE REVERSE PATH.
- A.
SIGNAL GENERATOR.
- B.
METER
- C.
TONER
- D.
BUTTIE SET
Correct Answer
A. SIGNAL GENERATOR. -
- 30.
PREVENTS THE RF SIGNALS FROM ENTERING THE CATV SYSTEM.
- A.
CABLE BOX
- B.
HOUSING
- C.
DTA
- D.
RECEVIER
Correct Answer
B. HOUSING -
- 31.
SEPARATES AND RECOMBINES THE FORWARD AND REVERSE SIGNAL FROM THE CABLE SO THEY CAN BE ROUTED TO AND FROM THE AMPLIFIER STATION.
- A.
DIPLEX FILTER
- B.
POWER DIPLER
- C.
POWER INVERTER
- D.
AMPLIFIER
Correct Answer
A. DIPLEX FILTER -
- 32.
SEPARATES OR COMBINES THE AC CURRENTS TWO PARTS THE AC POWER AND THE RF BROADBAND SIGNAL.
- A.
POWER DIPLEX
- B.
DIPLEX
- C.
INVERTER
- D.
DIPLEX FILTER
Correct Answer
A. POWER DIPLEX -
- 33.
THE SIGNAL IN ORDER TO BRING IT TO WITHIN THE ACCEPTABLE INPUT RANGE OF THE AMPLIFIER.
- A.
TRUNK
- B.
HOUSING
- C.
EQUALIZER
- D.
PAD (ATTENUATOR)
Correct Answer
D. PAD (ATTENUATOR) -
- 34.
COMPENSATES FOR THE UNEQUAL ATTENUATION PROPERTIES OF THE COAXIAL CABLE AT DIFFERENT FREQUENCIES.
- A.
EQUALIZER
- B.
PAD
- C.
FAM
- D.
RESPONSE
Correct Answer
A. EQUALIZER -
- 35.
USALLY SELECTED FOR LOW NOISE FIGURE.
- A.
FORWARD AMPLIFIER MODULE (TRUNK)
- B.
RESPONSE EQUALIZER
- C.
AMP
- D.
PAD
Correct Answer
A. FORWARD AMPLIFIER MODULE (TRUNK) -
- 36.
SOMETIMES CALLED A MOP-UP, THIS DEVICE IS USED TO TRY AND CORRECT FOR ANY UNDESIRED PEAKS OR VALLEYS WITHIN THE PASSBAND OF THE AMPLIFIER.
- A.
RESPONSE EQUALIZER
- B.
TRUNK
- C.
PAD
- D.
EQUALIZER
Correct Answer
A. RESPONSE EQUALIZER -
- 37.
USED TO COMPENSATE FOR FLUCTUATIONS OF THE INPUT SIGNAL.
- A.
AUTOMATIC GAIN CONTROL
- B.
SLOPE
- C.
BRIDGER AMPLIFIER
- D.
FEEDERMAKER
Correct Answer
A. AUTOMATIC GAIN CONTROL -
- 38.
SIMILAR TO AN AGC, MAINTAINS THE PROPER TILT(CAUSE BY TEMPERATURE CHANGE IN A SPECIFIED AMOUNT OF COAXIAL CABLE) AND OUTPUT LEVEL DESPITE CHANGES IN THE SIGNALS.
- A.
AUTOMATIC LEVEL AND SLOPE CONTROL
- B.
RETURN AMPLIFIER
- C.
BRIDGER AMPLIFIER
- D.
FEEDERMAKER
Correct Answer
A. AUTOMATIC LEVEL AND SLOPE CONTROL -
- 39.
USED IN TREE AND BRANCH ARCHITECTURE AS PART OF TRUCK/BRIDGER STATION.
- A.
AUTOMATIC LEVEL CONTROL
- B.
GAIN CONTROL
- C.
BRIDGER AMPLIFIER
- D.
OUTPUT
Correct Answer
C. BRIDGER AMPLIFIER -
- 40.
USED TO BOOST THE RETURN SIGNALS.
- A.
RETURN AMPLIFIER
- B.
FEEDER
- C.
RETURN SIGNAL
- D.
AMPLIFIER
Correct Answer
A. RETURN AMPLIFIER -
- 41.
USED AT OUTPUT OF BRIDGER MODULE.
- A.
FEEDERMAKER
- B.
SPLITTER
- C.
OUTPUT PAD
- D.
BANDWIDTH
Correct Answer
A. FEEDERMAKER -
- 42.
PROVIDE A MEANS OF MONITORING THE VARIOUS INPUTS AND OUTPUTS WITHOUT INTERRUPTING SERVICE.
- A.
TEST POINTS
- B.
OUTPORT
- C.
TRUNK
- D.
PLUG-IN
Correct Answer
A. TEST POINTS -
- 43.
SUBSTANTIAL ISOLATION BETWEEN THE OUTPUT AND TAP PORTS IF ALL SEE A GOOD 75-OHM MATCH.
- A.
DIRECTIONAL COUPLER
- B.
DEVICES
- C.
TEST POINTS
- D.
DC VOLTS
Correct Answer
A. DIRECTIONAL COUPLER -
- 44.
THE RF FORWARD SIGNAL FLOWS FROM THE INPUT TO BOTH OUTPUTS WITH EQUAL ATTENUATION FOR BOTH OUTPUTS.
- A.
SPLITTER
- B.
PAD
- C.
BRIDGER
- D.
TAP
Correct Answer
A. SPLITTER -
- 45.
USED TO DIVERT A SPECIFIC AMOUNT OF SIGNAL FROM THE FEEDER SYSTEM AND DISTRIBUTE IT TO 2, 4, OR 8 OUTPUTS PORTS FOR CONNECTION OF CUSTOMER DROPS
- A.
HARDLINES
- B.
DROP CABLE
- C.
OPTICAL NODE
- D.
TAP
Correct Answer
D. TAP -
- 46.
THIS DEVICE IS SOMETIMES INSTALLED IN THE DISTRIBUTION CABLE WHERE LOW VALUE TAPS ARE USED.
- A.
IN-LINE CONDITIONER
- B.
DROP
- C.
INVERTER
- D.
EQUALIZER
Correct Answer
A. IN-LINE CONDITIONER -
- 47.
USED TO INTRODUCE AC POWER INTO THE NETWORK FOR USE BY THE ACTIVE DEVICES.
- A.
POWER INSERTER
- B.
POWER DIPLEX
- C.
POWER STRIP
- D.
LINE INVERTER
Correct Answer
A. POWER INSERTER -
- 48.
IN AN OPTICAL SYSTEM THE RF SIGNALS ARE MULTIPLEXED (COMBINED) AND LINKED TO A SEMICONDUCTOR LASER DIODE.
- A.
TRANSMITTERS
- B.
RECEIVER
- C.
FIBER COMPONENTS
- D.
COAX
Correct Answer
A. TRANSMITTERS -
- 49.
FIBER CABLE.
- A.
COATING, CLADDING, CORE
- B.
COATING, DIELECTRIC, SHEATH
- C.
COATING, JACKET, FIBER
- D.
FIBER, CORE, COATING
Correct Answer
A. COATING, CLADDING, CORE -
- 50.
CONVERTS THE LIGHT TO RF SIGNAL.
- A.
OPTICAL RECEIVER
- B.
REFLECTION
- C.
GROUND
- D.
OUTPORTS
Correct Answer
A. OPTICAL RECEIVER -
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Apr 07, 2012Quiz Edited by
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Apr 07, 2012Quiz Created by
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