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Define LRU Page Replacement Algorithm
LRU policy: LRU expands to least currently use. This policy suggests which we re- move a page whose last usage is farthest from current time. For reference string that is: 1, 2, 3, 4, 1, 2, 5, 1, 2, 3, 4, 5, we comprise the subsequent page faults.
What is linked allocation, as detailed in text? Directory has pointers to first and last blocks of file. Every block of file (except last) has pointer to the next block.
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
What are Tree-structured directories We can generalize the directory structure to a tree of arbitrary height. This permits the user to create their own sub directories and to c
swapping technique
Process Description A process in UNIX is a somewhat complex set of data structures that provides the operating system with all of the information necessary to dispatch and manag
What is a binary Semaphore?
Synchronization In communication among processes messages passed may be blocking or nonblocking - also called as synchronous and asynchronous. Blocking send : The sending pr
What is macro expansion
What are the various layers of a file system? The file system is composed of many dissimilar levels. Each level in the design uses the feature of the lower levels to make new f
Q. A CPU scheduling algorithm determined an order for the execution of its scheduled processes. Convinced n processes to be scheduled on one processor how numerous possible differ
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