NCTI - Installer Conventional (Lesson 1) with verified answers /passed

NCTI - Installer Conventional (Lesson 1)

Which of the following will strengthen signals as they move farther away from the headend through the
trunk express system?



A ) Uninterruptable power supplies.

B ) Feeder cables.

C ) Distribution amplifiers.

D ) Fiber nodes. - correct answer ✔✔Answer: C ) Distribution amplifiers



Which of the following describes a carrier wave?



A ) A wave where the frequencies are spaced widely apart.

B ) A wave with a much higher frequency than the input signal.

C ) A wave with the same frequency as the input signal.

D ) A wave that has been converted to an electromagnetic wave. - correct answer ✔✔Answer: B ) A wave
with a much higher frequency than the input signal.



Which of the following describes modulation?



A ) The measure of signal strength.

B ) A range of frequencies assigned to signals to keep them separate from one another.

C ) Reproducing the information of a signal from a carrier wave.

D ) The reshaping of a carrier wave to include information contained by an input signal. - correct answer
✔✔Answer: D ) The reshaping of a carrier wave to include information contained by an input signal.



Which of the following is the symbol for power?



A)R