IV. Consider a disk on which the rate at which it can read sequentially laid out data is 100 MBps. Average seek time on the disk is 6 milliseconds and that the disk rotates at 5400 RPM. Assume all indexing blocks (directory/i-node) are cached in memory; you only have to account for the data block accesses. Assume that sequentially placed data fits in consecutive tracks so that no additional seek or rotational delays are incurred if they do not fit in a single track (1) If the block size used by the file system is 1 KB and all blocks are randomly distributed across the disk, how long will it take for an application to read a file of size 256 MB? (2 point) (2) Repeat 1, assuming that the blocks were allocated contiguously. (2 point)