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Which of the following is a very high-speed semiconductor memory which can speed up the CPU?
1. Cache Memory
2. Primary Memory
3. Main Memory
4. Secondary Memory

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Correct Answer - Option 1 : Cache Memory

The correct answer is Cache memory.

  • Cache memory is a very high-speed semiconductor memory that can speed up the CPU.
  • Cache memory acts as a buffer between the main memory and the CPU.  It holds the most frequently used part of the program and data.
  • Some advantages of cache memory are -
    • For temporary use, it is helpful in storing data.                                                                                                             
    • It is faster than the main memory.

  • Cache memory holds only those data and instructions that are held by the primary memory or main memory on which the computer is currently working.
  • For storing data/information permanently secondary memory also known as external memory or non-volatile is used.

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