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Linked allocation With linked allocation, every file is a linked list of disk blocks; the disk blocks might be scattered anywhere on the disk. The directory has a pointer to th
How many disk operations are needed to fetch the i-node for the file /usr/ast/courses/os/handout.t? Assume that the i-node for the root directory is in memory, but nothing else alo
The permission function is used to calculate what, if any access each class or level of user has to each file on a Unix machine. The permission task is one of the data components s
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
Explian Integrating a Request/Response Mechanism Traditional application developers will need to develop a mechanism for communication between requesting (client) and respondin
What makes a Just-in-Time inventory system differ from a traditional inventory system?
Q. Why is it important to scale up system bus and device speeds as the CPU speed increases? Answer: Consider a system which carries out 50% I/O and 50% computes. Doubling-up
Q. Researchers have recommended that instead of having an access list associated with each file (specifying which users can access the file and how) we should have a user control
Q. What is the effect of permitting two entries in a page table to point to the same page frame in memory? Describe how this effect could be used to decrease the amount of time ne
VoIP (Voice over Internet Protocol), also called Internet telephone, was once a novelty on the Internet, but not very useful because of all the problems with poor voice quality and
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