220-1202 Question #78: Real Exam Question with Answer & Explanation

The correct answer is B: UPS. To protect equipment from under-voltage events like sags or brownouts during peak periods, an Uninterruptible Power Supply (UPS) is the most effective solution.

Submitted by renata2k· Mar 30, 2026Operational Procedures

Question

A location is experiencing under-voltage events during peak periods. Which of the following should be deployed at this location?

Options

AProper ventilation
BUPS
CSurge protector
DPDU

Explanation

To protect equipment from under-voltage events like sags or brownouts during peak periods, an Uninterruptible Power Supply (UPS) is the most effective solution.

Common mistakes.

A. Proper ventilation manages heat dissipation and does not protect against electrical power fluctuations like under-voltage.
C. A surge protector is designed to safeguard against sudden spikes of over-voltage, not against drops in voltage.
D. A Power Distribution Unit (PDU) distributes electrical power to devices but typically does not offer voltage regulation or battery backup capabilities.

Concept tested. Power protection devices and their applications

Reference. https://www.eaton.com/us/en-us/products/backup-power-ups-surge-protection-pdu/uninterruptible-power-supply--ups-.html

Topics

#UPS#Power protection#Under-voltage protection

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