Suppose a file system is based on the indexed allocation strategy for managing blocks. Assume each file has a directory entry giving the file name, first index block, and the length of the file. The first index block points in turn to 128 file blocks and to the next index block. Suppose that each file block contains 4KB of data and the user is currently reading the 441K-th byte of a file. If the user’s next operation is to read the 1201k-th byte of the same file, how many physical disk I/O operations must be performed in order to read that byte? Explain your answer in detail using diagrams as appropriate.

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