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EXAMPLE FOR SEGMENTATION
Consider an instance as given in the table and we have five segments numbered from 0 through 4 the segment is stock in the physical memory as shown. The segment table has a detach entry for every segment giving the beginning address of the segment in physical memory and length of that segment.
For illustration segment 2 is 400 bytes long as well as begins at location 4300 and a reference to byte 53 of segment 2 is mapped onto location 4300+53=4353.
Lexical substitution during macro expansion Lexical substitution is employed to produce an assembly statement from a model statement. A model statement contains 3 types of stri
Define thrashing. Thrashing is the accident of high page traffic and low CPU utilization. It is observed that the cause of thrashing is an under-commitment of memory to program
define semaphore. how can we use semaphore to deal with n-process critical section problem.
What are privileged instructions? Some of the machine instructions that may cause harm to a system are designated as privileged instructions. The hardware permits the privilege
Internal file structure All disk I/O is performed in units of single block, and all blocks are the similar size. It is unlikely that the physical record size will exactly match
How File record length should be chosen File record length should be selected to match the data characteristics
List the Coffman's conditions that lead to a deadlock. Mutual Exclusion : Only one process might be use a critical resource at a time. Hold & Wait: A process may be alloc
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
Load Sharing : Processes are not given to a particular processor. A global queue of threads is used to maintain. Each processor, when idle, picks a thread from this queue. Note th
How free-space is managed using bit vector implementation? The free-space list is implemented as a bit map or bit vector. Each block is shown by 1 bit. If the block is free, th
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