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NCTI Certified Technician Exam Script – Complete Questions & Answers (2026/2027)

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This NCTI Certified Technician Exam Script (2026/2027 Edition) provides actual exam‑style questions and answers graded A+. Designed for NCTI students preparing for certification, it covers DOCSIS 3.1, OFDM, LDPC, HFC networking, IP multicast vs broadcast, modem addressing, troubleshooting processes, Internet Protocol foundations, configuration, and diagnostics. Perfect for quick revision and guaranteed success, this guide ensures mastery of high‑yield NCTI technical concepts.

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, COMPREHENSIVE NCTI QUESTIONS AND ANSWERS
GRADED A+


◉ In what manner do radio waves propagate (move) away from the
source (antenna). Answer: In a straight line in all directions at once


◉ Which one of the following radio frequency (RF) behaviors is
defined as "the bending of a wave as it passes through a medium of
different density". Answer: Refraction


◉ Which of the voltage standing wave ratios (VSWR) shown below is
best for transferring radio frequency (RF) energy between
connections?. Answer: 1.2:1


◉ What are some measures that can be taken to prevent high voltage
standing wave ratios (VSWR) in transmitters and receivers. Answer:
Tighten connections between cables and connectors and use
impedance-matched hardware throughput


◉ How does radio frequency line-of-sight (RF LOS) differ from visual
LOS. Answer: LOS is accompanied by a Fresnel Zone, a series of
concentric ellipsoid-shaped areas around the visual LOS path


◉ Why is the Fresnel Zone important to the integrity of the RF link
or path. Answer: The Fresnel Zone defines an area around the RF

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