[amp_mcq option1=”to improve disk performance” option2=”to handle interrupts” option3=”to increase the capacity of main memory” option4=”to speed up main memory read operation E. None of the above” correct=”option1″]
The correct answer is: A. to improve disk performance.
A block or buffer cache is a small amount of high-speed memory that is used to store data that is frequently accessed from the disk. This can improve disk performance by reducing the number of times that the disk has to be accessed.
Option B is incorrect because interrupts are handled by the interrupt controller.
Option C is incorrect because the capacity of main memory is not increased by using a block or buffer cache.
Option D is incorrect because a block or buffer cache does not speed up main memory read operations.
Option E is incorrect because block or buffer caches are used to improve disk performance.