6. a) List out the importance of interfacing. b) With practical Examples, Explain the connection of I/O bus to input-output devices and its mapping Specifications. 7. a) Explain in detail about strobe control method of asynchronous data transfer? [2M] [10M] [6M] b) What is the disadvantage of strobe method? Explain how handshake method solves the problem? [6M] 8. Classify and describe the possible modes of data transfer to and from peripherals with examples. 9. a) List out the methodologies involved in handling Priority Interrupt. b) Explain Daisy-Chaining priority and Parallel priority Interrupt with its hardware diagram. [10M] [12M] [2M] 10. a) Elaborate how DMA bypasses CPU and speeds up the memory operation? b) With a neat schematic, Explain about DMA controller and its mode of data transfer. [4M] [8M]