What are the advantages and disadvantages of communication between computers?
What will be an ideal response?
Communication between computers improves productivity by enabling users to share information and improves efficiency and computing power by enabling multiple computers to share resources. However, communication enables a third party to intercept transmitted data, a security risk that encryption attempts to minimize. It also occurs at relatively slow speeds compared to the internal processing speeds of individual computers. This affects the kinds of applications that can be implemented involving intercomputer communication.
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Discuss the main concepts of the ODMG Object Model. Give an example to illustrate each of the concepts.
What will be an ideal response?
Consider a class that uses the following variables to implement an array-based stack:
``` String [] s = new String[100]; int top = -1; // Note top == -1 indicates stack is empty ``` a method that implements a String peek() operation can be written as A) if (top == -1) throw new RuntimeException("Empty Stack"); else return s[top -1]; B) if (top > -1) return s[top]; else throw new RuntimeException("Empty Stack"); C) top--; if (top == -1) throw new RuntimeException("Empty Stack"); else return s[top]; D) if (top == 0) throw new RuntimeException("Empty Stack"); else { top--; return s[top]; }
Eamon is wondering where he can create a vector graphic for use in Photoshop. What do you tell him?
a. He can use Adobe Illustrator, but not Photoshop itself. b. He must use Photoshop itself to create the graphic. c. He can use either Adobe Illustrator or Photoshop itself. d. He must obtain a program other than Adobe Illustrator or Photoshop.
The value that signals a loop to stop is the ____________________ value.
Fill in the blank(s) with the appropriate word(s).