NCTI ROC II BOOK II FINAL Test 1 question with correct answers rated A+ 2023
When pressure testing a drop system to check for leakage, What must be done before applying the test signal? - correct answer The technician must isolate the drop system from the hybrid fiber/coax (HFC) network by disconn...
NCTI ROC II BOOK II FINAL Test 1
question with correct answers rated A+
2023
When pressure testing a drop system to check for leakage, What must be done before applying the test
signal? - correct answer The technician must isolate the drop system from the hybrid fiber/coax (HFC)
network by disconnecting the drop at the distribution tap.
Why do some leakage detection systems utilize a leakage carrier modulated with a tagging signal? -
correct answer To avoid false detection of leaks.
When all three sections of a pulse code modulator (PCM) are combined, what function can be
performed? - correct answer · As an analog-to-digital converter (ADC)
What prevents the subcarriers in orthogonal frequency division multiplexing (OFDM) from interfering
with each other? - correct answer · The peak power of each subcarrier aligns with the minimum power
of the adjacent subcarrier.
What two significant signals go into the mixer to create the intermediate frequency (IF)? - correct answer
· The RF signal frequency at the output of the front-end filter and the local oscillator (LO) signal.
Which class of amplifier efficiency approaches, but never achieves, 100%? - correct answer · Class D
amplifier.
What is the output waveform coming from a ferroresonant power supply? - correct answer · A quasi-
square wave.
What instrument should be used to accurately measure the output voltage of a ferroresonant power
supply? - correct answer · A true root mean square (RMS) digital multimeter (DMM)
, What could a light dimmer with a silicon controlled rectifier (SCR) create in a customer premises? -
correct answer · Radio frequency interference (RFI).
What is a characteristic of a bipolar junction transistor (BJT) common emitter configuration? - correct
answer · The output signal is taken from the emitter.
What is done to an operational amplifier (op amp) to create a low-pass filter circuit? - correct answer · A
capacitor is placed in parallel with the feedback resistor that is connected to the op amp inverting input
(-).
What is the core objective of the Data Over Cable Service Interface Specification (DOCSIS) Provisioning of
Ethernet passive optical network (EPON), or DPOE, access architecture? - correct answer · To make the
EPON elements appear and operate as DOCSIS elements to the existing DOCSIS-based back office
provisioning operations.
What benefit does a power-doubling configuration offer compared to a single cascade push-pull hybrid
amplifier? - correct answer · Twice the output with the same distortion.
Which statement characterizes a distributed powering system? - correct answer · Uses multiple locations
for power supply placement within the outside plant
What is done to an operational amplifier (op amp) to create a low-pass filter circuit? - correct answer ·
The number of inductors plus capacitances that are in a filter circuit
What is required for checking the physical network integrity when maintaining the coaxial cable
network? - correct answer · Being observant and performing some minor tasks while engaged in
regularly scheduled activities.
Which type of map contains node information? - correct answer · Design map.
Why is the term "gain control" applied to amplifier gain and controls inaccurate? - correct answer · The
only way to vary the output of any amplifier is to adjust the amplitude level of the signal going into the
amplifier.
Voordelen van het kopen van samenvattingen bij Stuvia op een rij:
Verzekerd van kwaliteit door reviews
Stuvia-klanten hebben meer dan 700.000 samenvattingen beoordeeld. Zo weet je zeker dat je de beste documenten koopt!
Snel en makkelijk kopen
Je betaalt supersnel en eenmalig met iDeal, creditcard of Stuvia-tegoed voor de samenvatting. Zonder lidmaatschap.
Focus op de essentie
Samenvattingen worden geschreven voor en door anderen. Daarom zijn de samenvattingen altijd betrouwbaar en actueel. Zo kom je snel tot de kern!
Veelgestelde vragen
Wat krijg ik als ik dit document koop?
Je krijgt een PDF, die direct beschikbaar is na je aankoop. Het gekochte document is altijd, overal en oneindig toegankelijk via je profiel.
Tevredenheidsgarantie: hoe werkt dat?
Onze tevredenheidsgarantie zorgt ervoor dat je altijd een studiedocument vindt dat goed bij je past. Je vult een formulier in en onze klantenservice regelt de rest.
Van wie koop ik deze samenvatting?
Stuvia is een marktplaats, je koop dit document dus niet van ons, maar van verkoper maxiscore. Stuvia faciliteert de betaling aan de verkoper.
Zit ik meteen vast aan een abonnement?
Nee, je koopt alleen deze samenvatting voor €9,73. Je zit daarna nergens aan vast.
