Ncti 2020 Progression: Maintenance Tech I - Ii Conventional Questions And Answers

What is required for checking the physical network integrity when maintaining the coaxial cable network? {Ans: Being observant and performing some minor tasks while engaged in regularly scheduled activities.}What enables the set-top box (STB) upstream carrier to be located below 20 MHz and still be reliably received? {Ans: The narrow bandwidth and quadrature phase shift keying (QPSK) modulation.}How does surge protection at the input and output of a ferroresonant power supply defend against voltage surges? {Ans: By passing voltage surges (within the surge device rating) to ground without damage.}When troubleshooting signal leakage in the drop system, what does it mean if all signs of signal leakage disappear when the ground block is disconnected and terminated on the side connected to the customer premises? {Ans: Something in the customer premises is the leakage source.}When looking at a cable modem's PreEqualization Tap response, what do you know if the ninth bar is less than 10 dB below the eighth bar? {Ans: That there are high micro-reflections and that the cause is near the modem, likely in the drop system.}What practice can uncover potential return path problems in the drop system that can be mitigated before entering the