Consider a scenario in which an 8kB (8192 bytes) data block needs to be transferred from an I/O device to memory. Assume that the data transfer granularity is 32 bits per I/O transaction. Two methods are being considered for this data transfer: (i) Interrupt driven I/O via CPU (no DMA controller), (ii) via DMA controller. For each method, indicate the number of CPU interrupts needed to transfer the entire block. Explain your answers in each case