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220-1101 · Question #408

A technician is working on a critical warehouse machine that will not turn on. The technician has determined the power supply for the machine failed. The warehouse manager is looking for a solution th

The correct answer is D. Redundant power supply. To prevent future downtime caused by power supply failure in a critical machine, the technician should install a redundant power supply, which provides a backup in case one unit fails.

Hardware

Question

A technician is working on a critical warehouse machine that will not turn on. The technician has determined the power supply for the machine failed. The warehouse manager is looking for a solution that will prevent downtime in the future. Which of the following devices should the technician install to meet this requirement?

Options

  • AGrounded power supply
  • BModular power supply
  • C220V power supply
  • DRedundant power supply

How the community answered

(48 responses)
  • A
    10% (5)
  • B
    6% (3)
  • C
    2% (1)
  • D
    81% (39)

Why each option

To prevent future downtime caused by power supply failure in a critical machine, the technician should install a redundant power supply, which provides a backup in case one unit fails.

AGrounded power supply

A grounded power supply is a standard safety feature that helps prevent electrical shocks, but it does not provide fault tolerance in case of a power supply unit failure.

BModular power supply

A modular power supply allows for detachable cables, which helps with cable management and airflow, but it does not offer redundancy or fault tolerance.

C220V power supply

A 220V power supply refers to the input voltage rating and is chosen based on the local electrical infrastructure, not as a solution for preventing downtime from power supply failure.

DRedundant power supplyCorrect

A redundant power supply (RPS) system contains two or more power supply units working in parallel, where one can take over if another fails. This setup ensures that if one power supply unit fails, the system continues to operate without interruption, thus preventing downtime for critical machines.

Concept tested: High availability - redundant power supply

Topics

#Power supply#Redundancy#Downtime prevention#High availability

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