This is a smaller, faster memory that stores copies of the data from…

Correct Answer: Cache memory Explanation: Cache memory is a high-speed memory that stores frequently accessed data from main memory to reduce access time. DRAM (Dynamic RAM) is a type of main memory used as the computer's primary RAM. It is larger and slower than cache and does not act as the small, very fast storage that keeps copies of frequently used main memory locations. Semiconductor-based memory is a broad category that includes many types of memory (for example RAM, ROM, and cache). Although cache is usually implemented with semiconductor technology, this option is too general. The specific small, high-speed memory that stores copies of frequently used main memory locations is called cache memory. Main memory (RAM) holds the programs and data currently in use and is larger but slower compared with cache. It is the source from which cache stores frequently used copies, so main memory itself is not the smaller, faster memory described.