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# CS501 Assignment#03 Solution & Discussion Due Date: 09-06-2011

 Question No 1 Marks = 10 Let us have a 20MIPS processor, you have to calculate the percentage of time it spends in busy wait loop of a 75-character line printer, when it takes 2 msec to print a character and a total of 665 instructions require to be executed to print a 75 character line.   Suppose that two instructions are executed in the polling loop. Question No 2 Marks=5 Let us assume that a program takes 400 seconds of elapsed time to execute.  Out of these 400 seconds, 320 seconds is the CPU time and the rest is I/O time. What percentage of elapsed time is spent on I/O operations?

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### Replies to This Discussion

See the attached file for complete assignment of CS501 Assignment#03 Spring 2011
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See the attached file for solution of CS501 Assignment#03 Spring 2011 By Sehar keep it up
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i think it is not a complete assignment answer so please check it again
Dear I think soo, it's not a complete one.
Thanks Dear

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