In a SQL injection attack, attackers may use lookup commands to obtain unauthorized information.
True
False
True
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________ are values that do not change, such as strings of text or numbers that are not calculated by an expression
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(Knight’s Tour: Brute Force Approaches) we developed a solution to the Knight’s Tour problem. The approach used, called the “accessibility heuristic,” generates many so- lutions and executes efficiently. As computers continue increasing in power, we’ll be able to solve more problems with sheer computer power and relatively unsophisticated algorithms. This is the “brute force”
approach to problem solving. a) Use random number generation to enable the knight to walk around the chessboard (in its legitimate L-shaped moves, of course) at random. Your program should run one tour and print the final chessboard. How far did the knight get? b) Most likely, the preceding program produced a relatively short tour. Now modify your program to attempt 1000 tours. Use a one-dimensional array to keep track of the number of tours of each length. When your program finishes attempting the 1000 tours, it should print this information in neat tabular format. What was the best result? c) Most likely, the preceding program gave you some “respectable” tours, but no full tours. Now “pull all the stops out” and simply let your program run until it produces a full tour. [Caution: This version of the program could run for hours on a powerful computer.] Once again, keep a table of the number of tours of each length, and print this table when the first full tour is found. How many tours did your program attempt before producing a full tour? How much time did it take? d) Compare the brute force version of the Knight’s Tour with the accessibility heuristic version. Which required a more careful study of the problem? Which algorithm was more difficult to develop? Which required more computer power? Could we be certain (in advance) of obtaining a full tour with the accessibility heuristic approach? Could we be certain (in advance) of obtaining a full tour with the brute force approach? Argue the pros and cons of brute force problem solving in general.
Specific cells in a protected worksheet can be ________ so that data can be entered
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Using the User State Migration Tool, the source computer can be running Windows Vista or Windows 7 only
Indicate whether the statement is true or false