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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.
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What is Instruction trace
Q. Several CPUs provide for more than two modes of operation. What are two probable uses of these multiple modes? Answer: Although most systems merely distinguish between use
Mention the various features that characteristics the deadlock condition . The four circumstances that give rise to deadlock condition are: 1) Mutual exclusion : As a minim
Long term scheduler calculates which processes are admitted to the machine for processing. It accepts the degree of multiprogramming. Once accepted, a job converts a process.
Now let us present an implementation of a producer-consumer system using condition variables. This implementation works. dequeue() lock(A) while (queue empty) { wait(A, C)
#include #include #include #include #include int main(void) { int pchan[2], pid, rval, cvar; char buf[20]; if (pipe(pchan) == -1){
How can the deadlock be prevented-Safe State Safe state : A state is safe if the system is able to allocate resources to each process in some order and still avoid deadlock.
Define caching. A cache is a region of fast memory that holds copies of data. Access to the cached copy is well-organized than access to the original. Caching and buffering are
Central to implementation of a modern memory management system is the page replacement algorithm. Modern virtual memory systems break memory up into pages and map (via a page table
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