VPNs can be used to give parts of your own organization access to other parts through an organizational ____.
A. Internet
B. private domain
C. intranet
D. extranet
Answer: C
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Answer the following statements true (T) or false (F)
1. An iteration structure is always needed to process a menu selection made by a user. 2. An If-Then-Else statement can be used as one way to process a user's menu selection. 3. The user's menu selection can be validated using an input validation loop immediately after the input statements. 4. It is never possible to give a user a chance to make more than one selection without re-running the whole program.
Which of the following is a binary tree?
a. Expression tree b. Huffman coding tree c. UNIX file system d. two of the above e. none of (a), (b), and (c)
The View Name application allows the user to enter the user’s first and last name. When the user clicks the View Name JButton, a JOptionPane that displays the user’s first and last name appears. Your application creates an instance of Class Name. This class uses set methods to set the first-name and last-name instance variables. While testing your application, you noticed that the JOptionPane did not display the correct out- put. The last name is displayed, but the first name is not. The GUI is shown in Fig. 18.42.
a) Copying the template to your working directory. Copy the C:Examples Tutorial18ExercisesDebuggerViewName directory to your C:SimplyJava directory.
b) Opening the Command Prompt window and changing directories. Open the Com- mand Prompt window by selecting Start > Programs > Accessories > Command Prompt. Change to your working directory by typing cd C:SimplyJavaViewName.
c) Using the debugger. Use the debugger to find the logic error(s) in your application.
Use the watch command to see all the changes to the instance variables of class Name. When you have found the logic error, change the code appropriately. The application with the correct output is displayed in Fig. 18.42.
d) Saving the application. Save your modified source code files.
e) Compiling the application. Compile the application by typing javac
ViewName.java Name.java.
f) Running the application. When your application compiles correctly, run it by typing java ViewName.
Which of the following is NOT true about ActiveX controls?
A. An ActiveX control is a compiled computer program that can be referenced from within an HTML document. B. When an HTML document that contains an ActiveX control is downloaded, the ActiveX control is installed on the server. C. When you have encountered an ActiveX control, your browser displays a security warning. D. When you encounter an ActiveX control, your browser asks for permission to proceed with the installation.