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1)application programs interact with operating system
through system call.is there any method of interaction
between the two?
2) Inconveniences faced by user interacting with a computer
systemwithout a operating system?
3) what are the requirements for virtual memory architecture
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Answer Posted / nisha
3)
• Physical memory divided up into pages
• A swap device (typically a disk) that holds pages not resident in physical memory (that’s why it’s referred to as backing store as well)
• Address translation
– Page tables to hold virtual-to-physical address mappings
– Translation lookaside buffer is cache of translation information
• Management software in the operating system which is responsible for virtual memory functionalities, not limited to Decoupling of program’s “address space” from its physical location.
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