Operating System Programming and Technical

Q. What is cache-coherency?

A. In a multiprocessor system there exist several caches each may containing a copy of same variable A. Then a change in one cache should immediately be reflected in all other caches this process of maintaining the same value of a data in all the caches s called cache-coherency.

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Operating System Other Question

Q. Explain the concept of the Distributed systems?

A. Distributed systems work in a network. They can share the network resources, communicate with each other Q. What is a long term scheduler & short term schedulers?

A. Long term schedulers are the job schedulers that select processes from the job queue and load them into memory for execution. The short term schedulers are the CPU schedulers that select a process from the ready queue and allocate the CPU to one of them.