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Define rotational latency and disk bandwidth.
Rotational latency is the additional time waiting for the disk to rotate the wanted sector to the disk head. The disk bandwidth is the total number of bytes transmitted, separated by the time among the first request for service and the completion of the last transfer.
Define the Global vs. local variables It is also important to discuss the scope of resources being granted to the application program. Variable scoping is defined as the acces
Describe swapping technique in UNIX systems. Swapping is used to control memory contention among processes. If there is excessively much memory contention, processes are swappe
Consider the following C program where M, N, K are predefined constants. Assume int is 4 bytes. Suppose this program is run on a machine with 4KB page size and 32 TLB entries. Init
What do you understand by “line balancing”? What happens if balance doesn’t exist?
Problem: a) Explain physically what occurs when a disk is fragmented. What is the purpose of "defragmenting" a disk? b) What is the idea behind backing up data on a secondar
Define caching. A cache is a region of fast memory that holds copies of data. Access to the cached copy is well-organized than access to the original. Caching and buffering are
A- Consider a computer system that provides a virtual memory space that consists of 8 pages. The physical memory contains 4 pages where the page size is 4Kbytes. Assume that at sp
What is protection of input output?
what is data-processing cycle?
Define FIFO Page Replacement Algorithm This policy simply eliminates pages in the order they arrived in the main memory. By using this policy we simply remove a page based upo
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