What is a cache memory?

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
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What is a cache memory? Explain the concept of Virtual memory. 

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Step 1

CACHE MEMORY

1)Cache memory can be defined as an extremely fast memory type that acts as a buffer between RAM and the CPU.
2) cache memory holds frequently requested data and instructions so that they are immediately available to the CPU at the time of need.
3) Cache memory also  reduce the average time to access data from the Main memory.

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