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What are overlays? To enable a process to be larger than the amount of memory allocated to it, overlays are used. The idea of overlays is to keep in memory only those instructi
explain simple segmentation
What is low-level formatting? Before a disk can kept data, it must be required into sectors that the disk controller can read and write. This procedure is called low-level form
explain about design issues of network operating system
What are the phases of background processing? Phases are:- Job Scheduling. Job Processing. Job Overview.
Question: a) Each process is represented in the operating system by a process control block (PCB). The PCB contains many pieces of information associated with a specific proce
why we say" OS is a resource allocator" and “OS is a control program"?
Define UNIX device driver The UNIX device driver is structured into two halves called top half and bottom half
SCAN o Go from the outside to the inside servicing requests and after that back from the outside to the inside servicing requests. o Replicate this over and over. o Diminish
Device Drivers Communicates straight with peripheral devices (disks, tapes, etc.). Responsible for begin physical I/O operations on the device. Pro
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