Briefly define the seven RAID levels.
Answer to relevant QuestionsConsider a program that accesses a single I/O device and compare un-buffered I/O to the use of a buffer. Show that the use of the buffer can reduce the running time by at most a factor of two. Consider the disk system described in Problem 11.7, and assume that the disk rotates at 360 rpm. A processor reads one sector from the disk using interrupt-driven I/O, with one interrupt per byte. If it takes 2.5 μs to ...What is the relationship between a pathname and a working directory? Some operating systems have a tree–structured file system but limit the depth of the tree to some small number of levels. What effect does this limit have on users? How does this simplify file system design (if it does)? What is a TinyOS component?
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