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Q. What protection problems may occur if a shared stack is used for parameter passing?
Answer: The contents of the stack could be conciliation by other process(es) sharing the stack.
Q. Suppose that you want to utilize a paging algorithm that requires a reference bit (such as second-chance replacement or working-set model) however the hardware does not provide
whats the problem in two state model ?
Describe the purpose of the checkpoint mechanism. How habitually must checkpoints be performed? Explain how the frequency of checkpoints affects: System performance while no
Second-Chance algorithm When a page has been selected, we inspect its reference bit. If the value is 0, we proceed to replace this page. If the reference bit is set to 1, thoug
SCAN o Go from the outside to the inside servicing requests and after that back from the outside to the inside servicing requests. o Replicate this over and over. o Diminish
Direct communication With direct communication each process that requires to communicate must explicitly name the recipient or sender of the communication. The send and receive
What is the use of fork and exec system calls? Fork is a system call by which a latest process is created. Exec is also a system call, which is used after a fork by one of the
SSTF stands for Abbreviation of SSTF is Shortest-Seek-time-first scheduling
what is segmentation as it refers to operating system
Virtual addresses are made up of two parts: the ?rst part is the page number, and the second part is an offset inside that page. Suppose our pages are 4kb (4096 = 212 bytes) long,
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