70-548C++ Exam

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Exam : Microsoft 70-548(C++)
Title : PRO:Design & Develop Wdws-Based Appl by Using MS.NET Frmwk


1. The component must be without a user interface.
You propose to derive the component from the System.Windows.Forms.Control class and to implement the IComponent interface. You need to decide whether the component will meet the requirements. What should you conclude?
A. The solution meets both the design requirements.
B. The solution does not meet any of the design requirements.
C. The solution meets the second requirement but not the first requirement.
D. The solution meets the first requirement but not the second requirement.
Answer: D

2. You create Microsoft Windows-based applications. You are creating a component that will encapsulate a data source. Dozens of applications will use the component.
The component must meet the following design requirements:
1.The component must be able to be modified within a Rapid Application Development environment.
2.The component must be without a user interface.
You propose to derive the component from the System.Windows.Forms.Control class and to implement the IComponent interface. You need to decide whether the component will meet the requirements. What should you conclude?
A. The solution meets both the design requirements.
B. The solution does not meet any of the design requirements.
C. The solution meets the second requirement but not the first requirement.
D. The solution meets the first requirement but not the second requirement.
Answer: D

3. You create Microsoft Windows-based applications.
You are designing a class to be used by multiple client applications. This class will be used to generate unique account numbers. Your company guidelines state that unique number generating components must comply with the following design pattern:
Classes must be designed so that they cannot be instantiated directly by client applications.
Only a single instance of the class must be used by all the client applications.
Instance methods and properties for these classes must be accessible to client applications.
You need to define how this class will implement the design pattern. Which two actions should you perform? (Each correct answer presents part of the solution. Choose two.)
A. Declare the class constructors as private.
B. Declare the class constructors as internal.
C. Create a public static method to retrieve an existing instance of the class, or a new instance if one does not exist.
D. Create a public instance method to retrieve an existing instance of the class, or a new instance if one does not exist.
E. Create a private static method to retrieve an existing instance of the class, or a new instance if one does not exist.
Answer: BC

4. You create Microsoft Windows-based applications. You create a component to process daily reports. These daily reports are data-driven.
Eight database tables dictate the following properties:
the data that is printed
the format of the data
the order of output
The component loads the configuration data into a specific internal structure. Subsequently, the component retrieves and outputs the report data based on the configuration settings that are stored in the internal structure. The database is not updated. You need to develop the data handling capabilities of the component to manage the configuration data and the report data. You also need to ensure that the reports are generated as quickly as possible. Which two data handling mechanisms should you choose? (Each correct answer presents part of the solution. Choose two.)
A. Use a DataReader object to load the report data based on the configuration data. Perform the required calculations.
B. Use a DataReader object to load the configuration data from the database.
C. Use a DataAdapter object and a DataSet object to load the configuration data from the database.
D. Use a DataAdapter object and a DataSet object to load the report data based on the configuration data. Perform the required calculations.
Answer: AB

5. You create Microsoft Windows-based applications. You are responsible for maintaining your companys application framework. You analyze the requirements for some of the applications that your company develops. You identify a common functionality. The functionality includes user interface elements as well as data-binding logic and display logic. You need to implement the functionality in such a way that other applications can reuse it. Which type of component should you implement?
A. data access component
B. business logic component
C. control library
D. data structure component
Answer: C

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