COMP SCI 537 Final: CS 537 UW Madison 08 Fall Final
Document Summary
Please put your name (below) and student id (top left) on this page. Please put your student id (but not your name) on every other page. The quality of the imagination is to ow and not to freeze . In this exam, your goal is simple: to trace the ow of what is happening in some of the systems and code sequences we have studied. If a question then asked, what is the ow of data when an application rst reads data from disk? you might answer, 3, 2, 1 because the data is read from the disk into the os cache and then nally copied into the user buffer. If the block is read again, the ow is simpler: 2, 1 . Because the data is fetched from the cache and avoids the disk altogether. Note that some answers might have no ow at all, i. e. , the empty ow.
