CompTIA A+ Core 2 (220-1202) Practice Exam

Volatile memory is characterized by the need for a constant power supply to maintain the stored information. When the power is turned off, the data held in volatile memory is lost. RAM, or Random Access Memory, is a prime example of volatile memory because it temporarily holds data and machine code that a computer is currently using.

When a computer is running, RAM allows for fast read and write access, enabling the CPU to quickly retrieve and process information. Once the computer is powered off, all the data stored in RAM is erased, which is the defining characteristic of volatile memory.

In contrast, options like SSDs, ROM, and USB drives represent non-volatile storage solutions. SSDs and USB drives retain data even when powered off, while ROM contains permanent instructions that do not change and remain intact regardless of power loss. Understanding these distinctions is crucial in recognizing the different types of memory used in computing systems.