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Q. What is the basic function of Assembler ?
Input to an assembler is an assembly language program. Output is an object program and information which enables the loader to prepare object program for execution. At one instance computer programmer had at his disposal a basic machine that interpreted through hardware certain fundamental instructions. He will program this computer by writing a sequence of ones and zeros(machine language) and place them into the memory of machine.
Write a note on the usage of semaphores. Semaphore is a synchronization tool and it is a variable having integer values. It is accessed only by two standard atomic operations w
what is file?explain the file access methods?
Why interrupt can be used? The majority of the different parts of the PC need to send information to and from the processor and they expect to be able to get the processor's at
Q. Explain about Functions of Operating System? Functions of Operating System Operating system performs 3 functions as follows: 1. Convenience: Operating System mak
Q. Operating System as User Interface? • Every general purpose computer comprises the operating system, hardware, system programs and application programs. The hardware compris
Q. Distinguish among PCS and SCS scheduling. Answer: PCS scheduling is completed local to the process. It is how a thread library schedules threads onto available LWPs. SCS sch
Suppose we want to program a Web server; we could easily do so without using concurrency, as follows: while(true) wait connection read from socket and parse url look up url cont
what is os
Explain Deadlock Every process in a set of processes is waiting for an event which only a process in the set can cause.
Write a short note about schedulers. Processes migrate between the various scheduling queues throughout its life time. The operating system should select for scheduling purpose
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