Tutorial 8 - Virtual Memory PDF

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CSN07101 – Computer Systems 1

Tutorial 8b: Virtual Memory 1. In a Virtual Memory system, explain how the virtual address is converted into the actual physical address. 2. Which of the following statements are true about paged virtual memory systems?  The top part of an address is used to locate an entry in the page tables.  Pages are variable sized chunks that can be moved between disk and RAM.  The bottom part of the address is used to locate an entry in the page tables.  The TLB (Translation Lookaside Buffer) holds a copy of all the data in the current page.  The bottom part of an address is used to locate a specific address within a page.  There is a single bit (the Present bit) that shows whether a page is present in RAM. 3. Windows and Linux both swap pages to the hard disk. Briefly explain why this is done. 4. Paging relies on the ‘Principle of Locality’ for its effectiveness. Explain what this Principle is. 5. Briefly describe the role of the TLB (Translation Lookaside Buffer) in a virtual memory system....