Chapter 3 Memory Management: virtual memory (Test questions with error-free answers)

address revolution correct answers the process of changing the address of an instruction or data item to the address in main memory at which it is to be loaded or relocated associative memory correct answers the name given to several register, allocated to each active process, whose contents associate several of the process segments and page numbers with their main memory addresses cache memory correct answers a small, fast memory used to hold selected data and to provide faster access than would otherwiese be possible clock cycle correct answers the elapsed time between two ticks of the computer's system clock clock page replacement policy correct answers a variation of the LRU policy that removes from main memory the pages that show the least amount of activity during recent clock cycles demand paging correct answers a memory allocation scheme that loads a program's page into memory at the time it is needed for processing displacement correct answers in a paged or segmented memory allocation environment, the difference between a page's relative address and the actual machine language address. Also called offset. FIFO anomaly correct answers an unusual circumstance through which adding more page frames causes an increase in page interrupts when using a FIFO page replacement policy. Also known as Beady's anomaly first-in first-out (FIFO) policy correct answers a page replacement policy that removes from main memory the pages that were brought in first job Table (JT) correct answers a table in main memory that contains two values for each active job: the size of the job and the memory locaiton where its page map table is stored least recently used (LRU) policy correct answers a page-replacement policy that removes from main memory the pages that show the least amount of recent activity locality of reference correct answers behavior observed in many executing programs in which memory locations recently referenced, and those near them, are likely to be referenced in the near future memory map table (MMT) correct answers a table in main memory that contains as many entries as there are page frames and lists the location and free/busy status for each one