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What are the three main activities of an operating system in regard to memory management?
Keep track of which parts of memory are now being used and by whom.
Decide which processes are to be loaded into memory when memory space becomes available.
Allocate and deallocate memory space as required.
Q. Once more considering the RPC mechanism consider the exactly once semantic. Does the algorithm for implementing this semantic implement correctly even if the ACK message back to
Q. Palm OS provides no signifies of concurrent processing. Discuss three major complications that concurrent processing adds to an operating system. Answer: a. A meth
What advantages are there to this two-level directory? Users are isolated from each other. Users have more freedom in choosing file names.
Define the Main reason to encrypt a file Major reason to encrypt a file is secure it for transmission.
What is a Dispatcher? The dispatcher is the module that gives control of the CPU to the process selected by the short- term scheduler. This function includes: Switching
W hat is hashed page table & method of hashed page table with details
Q. Why is it complicated to protect a system in which users are allowed to do their own I/O? Answer: In earlier chapters we identified a distinction among kernel and user mod
What are scheduling queues? Since the processes enter the system they are put into job queue. This queue contains all processes in the system. The processes that are exist in m
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.
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
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