meaning of pre order traversal

1. pre-order traversal traversal PREP 1. PReP PowerPC Reference Platform. 2. PREP PRogrammed Electronics Patterns. Language for designing integrated circuits. ["Computer Assisted Mask Production", R. L. Rosenfeld, Proc IEEE 579 Sep 1969]. prepaging Or "working set model" A technique whereby the operating system in a paging virtual memory multitasking environment loads all pages of a processs working set into memory before the process is restarted. Under demand paging a process accesses its working set by page faults every time it is restarted. Under prepaging the system remembers the pages in each processs working set and loads them into physical memory before restarting the process. Prepaging reduces the page fault rate of reloaded processes and hence generally improves CPU efficiency. ["Modern Operating Systems", Andrew S. Tanenbaum, pub. Prentice Hall, Inc. 1992].

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