Maintance Tech 2-3 Conventional Revised Questions and Answers / Sure A +
In a hybrid fiber/coax HFC fiber optic node, what are common voltages produced by DC power supplies? - Common Voltage includes +5, +12 and +24 VDC Why do many optical nodes accept two independent power supplies? - For redundant Powering of the node. What is an option available on most optical nodes for connectin to the power supply? - Through a power cable that is connected from the power supply directly to the power port of the node. Which of the following is true of a Centralized power node? - It can provide sufficient power for a fiber-optic node, including outside plant amplifiers and customer premis network interface devices (NID) for telephony service. Why is -48VDC with positive ground used by the telecommunications industry? - This reverse polarity is means of mitigating electrolytic corrosion on the outside plant.
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- Subido en
- 18 de mayo de 2024
- Número de páginas
- 7
- Escrito en
- 2023/2024
- Tipo
- Examen
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- Preguntas y respuestas
