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Suppose two hosts A and B are connected via a router R. The A-R link has infinite bandwidth; the A-R link has infinite bandwidth; the R-B link can send one packet per second. R's queue is infinite. Load is to be measured as the number of packets per second sent from A to R. Sketch the curves for throughput, delay, and power, each as a function of load.
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 ..
Show how to implement barriers using semaphores. Your solution should avoid busy-waiting. Be explicit about any initializations that you need to assume.
VLIW processor - assembler
Assume that 80 percent of the accesses are in the associative memory and that, of the remaining, 10 percent (or 2 percent of the total) cause page faults.What is the effective memory access time?
Deadlock Avoidance and Scheduling
Using the internet as a source, compile a list of three known vulnerabilities for SQL Server on Windows operating systems and three vulnerabilities for Oracle on Unix.
the wife calls deposit (). Describe how a race condition is possible and what might be done to prevent the race condition from occurring.
What does fragmented mean in reference to hard drives, and what, if anything, should be done to prevent it. Describe the general path data takes in an application from user input to the computer hardware.
Analyse the different methods for collecting data Explain by taking examples 3 types of Sampling techniques.
Give a solution using Monitor that is starvation-free. What would be value of semaphore before entering into Critical Section and after leaving it.
Other user user threads belonging to the same process also be affected by the page fault (i.e., would they also have to wait for the faulting page to be brought into memory?) Explain.
Assume we have two threads A and B A and B are to repeatedly print out ping and pong. Write down pseudocode of thread A and B How can this be solved with and without semaphores.
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