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What are the steps followed in testing?
i. Unit testing - The individual components are tested in this type of testing.
ii. Module testing - Related collection of independent components are tested.
iii. Sub-system testing - This is a kind of integration testing. Several modules are integrated into a subsystem and the entire subsystem is tested.
iv. System testing - The whole system is tested in this system.
v. Acceptance testing - This type of testing involves testing of the system with customer data. If the system behaves as per customer require then it is accepted.
What are scheduling queues? Since the processes enter the system they are put into job queue. This queue contains all processes in the system. The processes that are exist in m
Why is it not possible to enforce memory protection at compile time? Every process should be protected against unwanted interference by other process, whether intentional or
As we have discussed, page tables map virtual page addresses to physical page addresses. One of the advantages of using virtual addresses is that we can achieve complete separation
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Explain the Request/Response Interface Many issues are involved in providing a procedural interface for client functions to interact with server components. First off, since
Define Page stealing Page stealing is taking page frames another working sets
Optimal page replacement An optimal page replacement algorithm has the least page fault rate of all algorithms. The algorithm states that put back the page that will not be us
Q. Explain about Deadlocks? Deadlocks for (int i = 0; i // first find a thread that can finish for (int j = 0; j if (!finish[j]) { boolean temp = true; for
The question of fairness, regarding page eviction, is a hard one. How do we decide what is fair? Many operating systems use global LRU, where pages from all processes are managed t
Explain about deadlock prevention? In order for the occurrence of deadlock, the four conditions like mutual exclusion, hold and wait, no pre-emption and circular wait must hap
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