How does the operating system use paging to enhance the use of memory?
What will be an ideal response?
To maximize its flexibility in managing memory, the OS can move pages of physical memory to and from a paging file onto a disk. When a page is moved into physical memory, the OS updates the page maps of the affected processes. When the OS needs space in physical memory, it moves the least recently used pages of physical memory to the paging file. The manipulation of physical memory by the OS is completely transparent to applications, which operate only in their virtual address spaces.
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Method paintComponent is called when:
a. a lightweight Swing component is created. b. a lightweight Swing component is displayed. c. a lightweight Swing component is clicked. d. an application exits.
A(n) ____ is information that a Web server stores on a client computer, such as the client's preferences when accessing a particular Web site, or where the client has been on the Web site.
A. applet B. cookie C. scanner D. listener
Data ________ is the method used to organize data points in a dataset.
Fill in the blank(s) with the appropriate word(s).
The principal disadvantage of _________ mapping is the complex circuitry required to examine the tags of all cache lines in parallel.
A. set-associative B. associative C. stack mapping D. direct