Blank
______ refers to a device’s ability to function with or without power.

Question

BlackTom AI · Accepted Answer

The question asks about a term describing a device’s ability to function with or without power. We'll evaluate each option in turn.
Option 1: 'Solid-state' — This term refers to electronic components built from solid materials, such as semiconductors, and contrasted with vacuum tubes. It does not describe power availability or whether a device can operate with/without power, so this is not the right fit here.
Option 2: 'Cache' — Cache is a small, fast memory used to speed up data access in processors and systems. While important for performance, it has nothing to do with power dependency or continuity of operation, so this choice is incorrect.
Option 3: 'Volatility' — In computing, volatility describes whether data is retained when power is removed. Volatile memory loses its contents when power is cut, whereas nonvolatile memory retains data. Given the phrasing about functioning with or without power, volatility is the term that captures the power-dependent nature of data retention, making this the correct option in context.
Option 4: 'ROM' — ROM (read-only memory) is a type of nonvolatile memory that preserves data without power, but the word ROM itself does not describe a device’s ability to operate with or without power. It’s about data retention characteristics, not the general capability described in the prompt, so this option misstates the broader concept here.

Blank ______ refers to a device’s ability to function with or without power.单项选择题

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