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What are the use of job queues, ready queues and device queues?
As a process enters a system they are put in to a job queue. These queues having of all jobs in the system. The processes that are residing in main memory and are ready and waiting to implement are kept on a list called ready queue. The list of processes waiting for distinct I/O devices kept in the device queue.
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
Q. What is the purpose of system calls? Answer: System calls permit user-level processes to request services of the operating system.
is there any difference between the trap and interrupt??
Q. Why page sizes always powers of 2? Answer: Recall that paging is executed by breaking up an address into a page and offset number. It is most competent to break the address
. Nested Macro calls are expanded using the
Transparency Users must be able to access remote resources as though these resources were local. Transparency should as well promote user mobility. Users must be allowed
Example 1. The diagram illustrating the data structures of in-memory VFS objects and on-disk objects and their relationships on slide 24 of the lecture notes OSD.4. This diagram i
scattered resposibi;ity and authority -necessity of operation research
Q. Explain the differences in terms of cost between the three storage types nonvolatile, volatile and stable. Answer: Volatile storage refers to main as well as cache memory an
What are two differences among user-level threads and kernel-level threads? Under what circumstances is one type better than the other? (1) User-level threads are unknown by th
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