Charlie likes Alice's picture-password system of the previous exercise, but he has changed the login so that it just shows the user 40 different pictures in random order and they have to indicate which 20 of these are from their set of favorites. Is this an improvement over Alice's system? Why or why not?
What will be an ideal response?
Note that there are two pictures for each choice in the original plan, one on
the left and one on the right. Thus, with 20 pairs, there is a search space of 220, which is
roughly equal to 1 million. If the search space is defined by picking 20 out of 40, then the
size of the search space is the combinatorial function "40 choose 20," which is 40!/(20!)2,
i.e., it is over 137 trillion.
Computer Science & Information Technology
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Many actions require additional information, called the arguments of the action.
Answer the following statement true (T) or false (F)
Computer Science & Information Technology
A(n) ____________________ is a browser-accessible single page of graphics and information.
Fill in the blank(s) with the appropriate word(s).
Computer Science & Information Technology