CCSP · Question #837
A UPS should have enough power to last how long?
The correct answer is C. Long enough for graceful shutdown. This question asks about the primary purpose of an Uninterruptible Power Supply (UPS) in terms of its battery runtime.
Question
A UPS should have enough power to last how long?
Options
- AOne day
- B12 hours
- CLong enough for graceful shutdown
- D10 minutes
How the community answered
(41 responses)- A5% (2)
- B2% (1)
- C90% (37)
- D2% (1)
Why each option
This question asks about the primary purpose of an Uninterruptible Power Supply (UPS) in terms of its battery runtime.
A UPS is not designed to power systems for an entire day; its battery capacity is limited.
12 hours is an excessively long duration for typical UPS runtime, far exceeding its design purpose for temporary power.
C is correct because the main function of a UPS is to provide temporary power, allowing connected systems to shut down gracefully and prevent data corruption or hardware damage during a power outage. It is not designed for extended operation.
While some UPS units might offer around 10 minutes, the most accurate general purpose is to ensure a graceful shutdown, which might be shorter or longer depending on the system, making graceful shutdown the fundamental goal.
Concept tested: UPS purpose and graceful shutdown
Source: https://www.dell.com/en-us/blog/ups-systems-why-you-need-one-and-how-to-choose/
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