Case Based Critical Thinking
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Case 1
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Mr. Loyko, a computer science teacher has been drilling his classes on Flash drawing tools. He makes several important errors during his lecture and those students who stop the lecture and correct the errors will receive extra credit points on the next exam.
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Mr. Loyko incorrectly names the tools which are used to create vector objects. Which of the following is the only tool used for that purpose?
A. Eyedropper
B. Pencil
C. Transform
D. Eraser
Answer: B
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a. static b. constructor c. destructor d. friend e. None of these
What is returned by the following code? Assume that getStockPrices is a method that returns a 2-by-31 array, with the first row containing the stock price at the beginning of the day and the last row containing the stock price at the end of the day, for each day of the month.
``` 1 private int[] mystery() 2 { 3 int[][] prices = new int[ 2 ][ 31 ]; 4 5 prices = getStockPrices(); 6 7 int[] result = new int[ 31 ]; 8 9 for ( int i = 0; i<= 30; i++ ) 10 { 11 result[ i ] = prices[ 0 ][ i ] - prices[ 1 ][ i ]; 12 13 } // end for 14 15 return result; 16 17 } // end method mystery ```
Consider the schema BCDFGH with the following FDs: BG ? CD, G ? F , CD ? GH , C ? FG , F ? D. Use the 3NF synthesis algorithm to obtain a lossless, dependency preserving decomposition into 3NF. If any of the resulting schemas is not in BCNF, proceed to decompose them into BCNF.
What will be an ideal response?
When viewing memory information within Task Manager, what section represents the memory that holds the operating system kernel and device drivers that cannot be paged out?
A. Paged pool B. Non-paged pool C. Committed Memory D. Protected Memory