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Question 1: UNIX treats all devices as files. Explain why this is an innovative feature when it was first introduced and how it adds flexibility to the operating system
Question 2: Remembering that there's a trade-off between memory use and CPU overhead, give an example where increasing the size of virtual memory will improve job throughput. Then give an example where doing so would cause throughput to suffer.
Question 3: when is compaction of secondary storage beneficial from the File Manager's perspective? Give several examples. List some problems that could be presented as a result of compaction and how they might be avoided.
Show some problems that could be shown as a result of compaction and how they might be avoided.
If it is in main memory but not in the cache (called cache miss), 60 ns are needed to load it into the cache (this includes the time to originally check the cache), and then reference is started again.
1. in the text we briefly discussed the problems of understanding natural languages as opposed to formal programming
If each process uses a different value for d in the Lamport's clock and vector clock equations, will the logical clocks and vector clocks schemes satisfy the total order relation => and the relation: a â--> b iff t^a
Formulate the linear programming model for this problem Plot a graph indicating and labelling clearly all the constraints, the feasible region (R) and the optimal point (X)
Assume you have been hired through your local library to help them setup a LAN to connect their three library sites.
Compare the circular-wait scheme with thevarious deadlock-avoidance schemes banker's algorithm)
Consider following sequence of memory references from 460-byte program: 10, 11, 104, 170, 73, 309, 185, 245, 246, 434, 458, 364. Write down the reference string, assuming page size of 100 bytes.
Increase size of memory so it contains four page frames for public use. Using same page request as above and FIFO, do another page trace analysis and calculate the failure and success ratio.
1. what does it mean to say that a programming language is machine independent?2. name and describe four different
Consider the advantages and disadvantages of each major operating system that Amy might use on the Web server. In a one-page memorandum to Amy.
Why are there so many DVD formats?
Describe how you would use a negative feedback loop to manage your bank balance.Describe how you would do so with a positive feedback loop. Explain which you would prefer and why?
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