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Q. Explain Message passing among systems?
Communications- Message passing among systems requires messages to be turned into packets of information and sent to the network controller also transmitted across a communications medium and reassembled by the destination system. Packet ordering as well as data correction must take place. Again user programs mightn't coordinate access to the network device or they might receive packets destined for other processes.
How is it different from the unbounded buffer algorithm ? Explain.
Two Level Directory This kind of structure overcomes the problems of assigning unique names to the files. Thus there need not be any confusion among users. In this kind of s
What is Belady's anomaly When plotting on a graph the page faults versus the number of available frames. We notice that the number of faults for four frames is greater than th
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. Th
Define Virtual memory Virtual memory is employed in all major commercial operating systems
Q. What are the three main activities of an operating system in regard to secondary-storage management? Answer: 1) Free-space management 2) Storage allocation 3) Disk
What is a Process Control Block? Every process in the operating system is represented by a process control block as well called a task control block. It contains several pieces
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
The scheduling technique in which CPU is allocated to the process with least CPU-burst time is known as Shortest job first Scheduling is a scheduling technique in which CPU i
In which page replacement policy Balady’s anomaly occurs? FIFO (First in First Out)
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