Which of the following statements is false?
a) As in a Windows Store app, the App class defines app-level event handlers (for events like the Launching, Activated, Deactivated and Closing), app-wide resources and more.
b) The app-level event handlers are defined in class App’s code-behind file (App.xaml.vb)—only the Visual Basic compiler can add code to these event handlers to respond to any of these events.
c) A WP8 app consists of one or more pages that are derived classes of PhoneApplicationPage (namespace Microsoft.Phone.Controls).
d) As in Windows 8 UI, each page’s XAML specifies the controls that enable the user to interact with the page, and each page’s code-behind file defines the page’s functionality.
b) The app-level event handlers are defined in class App’s code-behind file (App.xaml.vb)—only the Visual Basic compiler can add code to these event handlers to respond to any of these events.
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Describe a situation in which an analyst would choose to use object-oriented systems analysis and design rather than the systems development life cycle.
What will be an ideal response?
Consider a sorted binary tree data structure for storing integers. Write invariants in OCL denoting that
a. All nodes in the left subtree of any node contain integers that are less than or equal to the current node, or the subtree is empty. b. All nodes in the right subtree of any node contain integers that are greater than the current tree, or the subtree is empty. c. The tree is balanced.
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Indicate whether the statement is true or false.
The default setting for a secondary zone's refresh interval is how many minutes?
A. 5 minutes B. 10 minutes C. 15 minutes D. 20 minutes