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8a) Amanda Kreuger said " Why can't every thing be aligned nicely, not out of synch with the radii coming from the center, for hard disks? Hotse races all start with the horses at the same radii and throughout the race?" Freddie was more realistic. There was a reason why hard disks are skewed. Help Freddie out by determining the reason why data on hard disks have a cylinder skew and that is necessary.
b)How much cylinder skew is needed for an Oceangate disk operating at 20,000 rpm(new series for the Christmas promotions) which has a seek time of 0.5 milliseconds? This disk has 800 sectors of 512 bytes each on each track.
c) Calculate the maximum data rate in MB/second for the disk described above
Computer has 16 pages of virtual address space but only three physical pages frames. Initially physical memory is empty. Program references virtual pages in order 1,2,3,4,5,3,4,1,6,7,8,7,8,9,7,8,9,5,4,5,4,2 Which references a page fault with LRU ..
Estimate the runtime order of the jobs such that it minimizes average response time.
While there are difficult security concerns in any isolated computing environment, addition of a network in geographically distributed facilities.
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Find the Internet to search server side software that is needed to be installed on the hospital's servers to support access by your local hospital doctors to patients' data using their cellular phones or PDAs.
Nichol's network technicians says she does not believe the servers are capable of handling Windows Server 2008. Describe what components she will require to add or upgrade, at minimum, to make Nichol's servers capable of running Windows Server 2008.
Suppose an operating system maps user-level threads to the kernel using the many-to-many model and the mapping is done through LWPs.
Explain how the computer system accommodating the 2G memory requirement by only using 1G physical memory. Assume that the page size is 4M, and so is the page frame size and Explain what logic memory addresses are, what physical memory addresses are..
Assume you are a DBA staff member. determine what data dimensions would you describe to top evel managers to get their support for data administration function?
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