It is a non-volatile memory. It is a slow-read and inexpensive memory. It is a fast-read and expensive memory. It is a small-sized memory. Which of the above statements are correct? Select the correct answer using the codes given below: - Statement 1: It is a non-volatile memory. This is incorrect. Cache memory is usually made of SRAM, which is volatile; it loses its contents when power is removed. Non-volatile memory includes ROM, Flash, SSDs, etc. - Statement 2: It is a slow-read and inexpensive memory. This is incorrect. Cache is designed for fast access (fast- read) and is more expensive than main memory or secondary storage. - Statement 3: It is a fast- read and expensive memory. This is correct. Cache memory is located closer to the CPU and is significantly faster than main RAM. This speed comes at a higher cost per bit. - Statement 4: It is a small-sized memory. This is correct. Cache memory is much smaller than main memory due to its high cost and the need for speed (smaller size allows faster access).
Consider the following statements about the cache memory:
Asked in UPSC CISF AC EXE 2018 · Topic: Components of a Computer System (Memory Hierarchy: Primary Memory (RAM, ROM, Cache), Secondary Storage Devices (HDD, SSD, Optical))
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