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Question: A year after your 1st visit to the credit union the manager calls you once again. His business is experiencing tremendous growth and requires to either open another branch office on the west side of town or allow their auditors and loan-processing staff to work from home. He asks you to compare the security requirements of opening a new branch office versus implementing a VPN solution (using empoyees' home broadband Internet connections) for work-at-home employees. As part of your comparison, identify the costs associated with these security requirements. What factors do those costs depend on? For an expansion of 10 users, which solution do you recommend?"
Suppose an operating system maps user-level threads to the kernel using the many-to-many model and the mapping is done through LWPs.
Assuming fetches to main memory are started in parallel with look-ups in cache, calculate the effective (average) access time of this system.
Seek time 1 ms for every 100 tracks traversed. Initial track position is 0. Compute average seek time & rotational latency.
Suppose that you have been asked to consult for a corporation that has branch offices in four continents. You have implemented a management data system that will enable its managers to exchange information.
In different communications models, communication may take place using either "message passing" or "shared memory". Distinguish between "message passing" and "shared memory", illustrating your answer with a diagram Give three advantages of virt..
When a process first start execution, how would you characterize the page fault rate? Once the working set for a process is loaded into memory, how would you characterize the page fault rate?
Information systems have become so integrated into the UK society and economy that the cashless society is a realistic possibility within the next 25 years.
Give a solution using Monitor that is starvation-free. What would be value of semaphore before entering into Critical Section and after leaving it.
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.
Analyze the user interaction interface of a typical website that you might wish to improve and design in terms of any ethical considerations that might require to be addressed.
Simulation of Elevator and Shortest Seek Time First
Analysis and implementation of algorithms for memory allocation in operating system, Explain First- t and best- t methods are used in memory allocation in operating systems.
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