In chapter 14.4, File Allocation Schemes are discussed. Assuming that the storage device is represented as a linear list of blocks at the lowest physical layer, the I/O control converts a block number to a physical address. We’re interested in converting a logical address to a block number. Explain how Logical Addresses are mapped to Physical Addresses for each ofi) contiguous allocation,ii) linked allocationiii) indexed allocationiv) FAT approaches for representing files.by showing for each approach how to calculate the physical address from the logical address and how to navigate to the block using the examples addresses 4209, 3034, 262, 18176, for a system with block size 512