Quiz 12.1

DIRECTIONS: Read each question carefully. Then click on the dot next to the answer that most closely fits the question. Try to answer all questions on this quiz and when you are done, click on the grade me button at the bottom.

Coverage: Section 12.1

  1. How much memory did the original IBM PC have in 1981, when it was introduced?
8 K
16 K
64 K
16 M

  1. What are overlays used for and when?
when programs are too big to fit into real memory
when there is too much data to fit into real memory
when virtual memory is too small

  1. In what year was virtual memory first implemented?
1947
1952
1961
1975

  1. Which term applies to chunks of physical memory?
pages
frames
overlays

  1. How big are frames in relation to pages?
each frame is bigger than a page
each frame is smaller than a page
frames and pages are the same size

  1. What is the name of the area on the hard disk where pages that are not in current use are stored?
swap area
page area
holding area
/tmp

  1. What term is used for systems that do not preload pages into frames but rather dynamically allocate frames for pages as they are needed by the program?
thrashing
demand paging
swapping
overlaying

  1. When a page has been modified by memory write operations, we say it is...
dirty
thrashed
evicted
purged

  1. What is the major trade-off for the convenience of pretending that we have a much larger memory than we really do?
programs are much more complex
programmers cannot write in assembler any more
disk I/O is much slower
programs run slower