Suppose a disk drive has 5000 cylinders numbered 0 through 4999. The drive is currently serving a request on cylinder 2150. Previously, the head was in the cylinder 1805. The order of pending disk access requests is as follows:

2069, 1212, 2296, 2800, 544, 1618, 356, 1523

Starting from the current head position, what is the total distance (in cylinders) the disk arm has moved to satisfy all pending requests for each of the following disk timing techniques:

SSTF disk timing technique. SCAN disk timing technique.

C-SCAN disk timing technique.