Tentamen (uitwerkingen)
NCTI – INSTALLER BOOK EXAM QUESTIONS AND ANSWERS
- Vak
- Instelling
NCTI – INSTALLER BOOK EXAM QUESTIONS AND ANSWERS...
[Meer zien]Voorbeeld 3 van de 22 pagina's
Voorbeeld 3 van de 22 pagina's
In winkelwagen
In winkelwagen
gesponsord bericht van onze partner
Verkoper
Volgen
luzlinkuz
Ontvangen beoordelingen
Voorbeeld van de inhoud
NCTI – INSTALLER BOOK EXAMQUESTIONS AND ANSWERS
Which of the following will strengthen signals as they travel further away from
the headend via the trunk express network? - ANSWER B: Distribution
amplifiers.
Which of the following defines a carrier wave? - ANSWER B) A wave with
significantly greater frequency than the input signal.
Which of the following defines modulation? - ANSWER B) The reshaping of a
carrier wave to add information from an input signal.
Which of the following is the sign of power? - ANSWER W = Watts.
Which of the following defines the procedure for measuring an analogue signal
at a given interval? - Answer Sampling
Which of the following is true about the base ten system? - ANSWER B) Digits
0-9 are used.
Which of the following best characterizes the post-bit-error rate (BER)? -
ANSWER A) An assessment of all bit errors after forward error correction has
been done.
Which of the following compression rates allows six digital programs to be
broadcast instead of one analog channel in a 6 MHz bandwidth? - Answer: 6:1.
,What modulation error ratio (MER) should a 256-quadrature amplitude
modulation (QAM) signal use? - ANSWER 32dB or higher.
On the return trip, signals from many sources must be routed over the same
wire. What is the name of the approach that allows signals to be delivered while
maintaining data integrity? - Answer B: Time division multiple access
(TDMA).
What is the function of shielding in a coaxial cable? - ANSWER C: Prevents
ingress and egress.
Which of the following defines attenuation? - ANSWER A drop in signal
intensity via a cable system.
Which of the following are characteristics of multimode fiber? - ANSWER B) It
is more convenient to handle and terminate than single-mode fiber.
Which of the following describes the construction of a fiber-optic cable? -
ANSWER B) Steel-wire buffer tubes may be used in drop fiber cables.
Which of the following statements are true about CAT-1 cabling? - ANSWER
C) It is primarily utilized in voice applications.
Which twisted-pair cable type is the only one certified by certifying authorities
for data rates of more than 10 Mbps? - ANSWER A) CAT 5.
Which of the following is responsible for decreasing crosstalk in twisted-pair
cables? - ANSWER A: Number of twists.
, Wireless networks use low-power RF waves, so which of the following is true
about signal strength? - ANSWER A) As the distance between wireless devices
increases, the signal strength and data rate decrease.
Which of the following statements are accurate about Wi-Fi technology? -
ANSWER D) The router and modem are always wired.
What percentage does a cable's attenuation increase or reduce with every 10°
variation in temperature? - ANSWER 1 percent
Which of the following describes high-definition television (HDTV)? -
ANSWER D) Audio surround sound with Dolby Digital technology.
Which form of screen display is known to consume a lot of energy, have a
limited lifespan, and produce high-contrast, vividly realistic color images? -
ANSWER Plasma
Which TV digital format was intended specifically for progressive scan DVDs?
- Answer EDTV
Which sort of television display has a deeper cabinet, which influences the
screen size? - ANSWER, rear projector
Which device allows clients to arrange recordings of television shows? - B)
Digital video recorder (DVR). dvr
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 luzlinkuz. Stuvia faciliteert de betaling aan de verkoper.
Zit ik meteen vast aan een abonnement?
Nee, je koopt alleen deze samenvatting voor €11,75. Je zit daarna nergens aan vast.
Is Stuvia te vertrouwen?
4,6 sterren op Google & Trustpilot (+1000 reviews)
Afgelopen 30 dagen zijn er 80189 samenvattingen verkocht
Opgericht in 2010, al 14 jaar dé plek om samenvattingen te kopen