Which of the following is an example of Primary Cache memory?
Which of the following is an example of Primary Cache memory?
ARegisters
BPROM
CHDD
DPen drive
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correct answer is: option a (Registers)
Explanation: Primary cache memory, also known as L1 cache, is the fastest and smallest memory in a computer's memory hierarchy. It's located directly on the processor chip (CPU) and is used to store frequently accessed data and instructions for quick retrieval. Registers are the fastest type of memory and are located directly within the CPU, making them a prime example of primary cache.
- Option a: Registers are the fastest memory and are located directly within the CPU. Hence, they are a direct example of primary cache.
- Option b: PROM (Programmable Read-Only Memory) is a type of non-volatile memory, meaning it retains its data even when power is off. It is not used as a primary cache due to its slower access times and the fact that it's read-only once programmed.
- Option c: HDD (Hard Disk Drive) is a secondary storage device and is much slower than primary memory. It is used for long-term data storage and is not used as a cache.
- Option d: A Pen drive is also a secondary storage device (flash memory) and is slower than primary memory. It is used for portable data storage and is not used as a cache.
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