You Develop A Windows Based Application XYZ. XYZ Uses A DataSet Object That Contains TwoDataTable Objects. XYZ Will Display Data From Two Data Tables. One Table Contains Customerinformation, Which Must Be Displayed In A Data Bound ListBox Control. The Other Table Containsorder Information, Which Must Be Displayed In A DataGrid Control.You Need To Modify XYZ To Enable The List Box Functionality.What Should You Do?A. Use The DataSet.Merge Method.B. Define Primary Keys For The Data Table Objects.C. Create A Foreign Key Constraint On The DataSet Object.D. Add A DataRelation Object To The Relations Collection Of The DataSet Object.

⟩ You develop a Windows-based application XYZ. XYZ uses a DataSet object that contains twoDataTable objects. XYZ will display data from two data tables. One table contains customerinformation, which must be displayed in a data-bound ListBox control. The other table containsorder information, which must be displayed in a DataGrid control.You need to modify XYZ to enable the list box functionality.What should you do?A. Use the DataSet.Merge method.B. Define primary keys for the Data Table objects.C. Create a foreign key constraint on the DataSet object.D. Add a DataRelation object to the Relations collection of the DataSet object.

D. Add a DataRelation object to the Relations collection of the DataSet object.

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Suppose You have a .NET Remoting object named ES ProductLoader. The ES ProductLoader class is aserver-activated Singleton object.The ES ProductLoader class loads product data into a Microsoft SQL Server database. The Loadmethod of the ES ProductLoader class is a time-consuming method to call. You are developing aclient application that uses the ES ProductLoader class. You want to ensure that the clientapplication can continue to respond to user input while the Load method of the ES ProductLoaderclass is called.What should you do?A. Use an AsyncDelegate instance to call the Load method.B. Modify the ES ProductLoader class to be derived from IAsyncResult.C. Configure the ES ProductLoader class to be a client-activated .NET Remoting object.D. Configure the client application to have its own remoting channel that matches the serverschannel and formatter.

Suppose You are planning to create a Dataset object named ES DataSet to be used in a bond-tradingapplication. Several developers will need to write code to manipulate myDataSet, and you want toensure that ES DataSet is easy for them to use. You decide to create ES DataSet as a stronglytyped data set. Which two actions should you take? (Each correct answer presents part of thesolution. Choose two)A. Create an XSD schema that defines ES DataSet.B. Create an XDR schema that defines ES DataSet.C. Create a class for ES DataSet that is based on the schema and that inherits from the Datasetclass.D. Create a class for ES DataSet that is based on the schema and that inherits from theXmlSchema class.E. Create a key pair for ES DataSet by using the Strong Name tool (Sn.exe).

Suppose You create a serviced component named Session Dispenser. This computer is in theCompany.Utilities assembly and is registered in a COM+ server application. Session Dispenserhas multiple callers. You discover that there are logic problems in the Create New Sessionmethod. You want to debug any calls to this method. What should you do?A. Open the Session Dispenser solution.Set a breakpoint on the Create New Session method.Start the debugger.B. Attach the debugger to the client process.Set a breakpoint on the SessionDispenser.CreateNewSession method.C. Attach the debugger to the Company.Utilites.exe process.Set a breakpoint on the Create New Session method.D. Attach the debugger to a Dllhost.exe process.Set a breakpoint on the Create New Session method.

Suppose You create an XML Web service named Postal Code. Your project source includes a codebehindfile and a file named PostalCode.asmx. During implementation, you use the Debug class torecord debugging log messages, to verify values, and to report debugging failures. You want todeploy Postal Code to a production computer. You do not want any of the debugging code toexecute on the production computer. What should you do?A. Set the projects active configuration to Release and rebuild the DLL.B. Modify the trace element of the Web.config file by setting the enabled attribute to "false".C. Modify the compilation element of the Web.config file by setting the debug attribute to "false".D. Add code to the constructor of the Postal Code class to set the Auto Flash property of theDebug class to false.E. Add code to the constructor of the Postal Code class to call the Clear method of theDebug.Listeners property.

Suppose You create a .NET Remoting object named Patient info that exposes medical patient information.Because of the confidential nature of the information, you must ensure that the data remainssecure. You want client applications to connect to Patient info over a secure communicationchannel. You want to accomplish this task by writing the minimum amount of code.What should you do?A. Create your own host application and use a Tcp Channel and Binary Formatter.B. Create your own host application and use an Http Channel and a Soap Formatter.C. Install Patient info in an Internet Information Services (IIS) virtual directory.Configure Patient info to use a Tcp Channel and a Binary Formatter.Configure IIS to use SSL.D. Install Patient info in an Internet Information Services (IIS) virtual directory.Configure Patient info to use an Http Channel and a Soap Formatter.Configure IIS to use SSL.

Suppose You are developing an application named ExamSApp by using Visual C# .NET and Visual Basic.NET. The application will use functions form a DLL written in unmanaged code. One functionrequires the calling application to allocate unmanaged memory, fill it with data, and pass theaddress of the memory to the function. On returning from the function, the calling application mustdeallocate the unmanaged memory.You need to decide how your application will handle unmanaged memory.What should you do?A. Use a byte array.B. Use the methods of the Marshal class.C. Use the methods of the MemoryStream class.D. Derive a new class from the Stream class, and override the allocation methods.

You have a DataSet object named loanCustomersDataSet that contains customers serviced bythe loan department of ExamSlink Inc. You receive a second DataSet object namedassetCustomersDataSet that contains customers serviced by the asset management departmentof your company. Both objects have the same structure. You want to mergeassetCustomersDataSet into loanCustomersDataSet and preserve the original values inloanCustomersDataSet.Which code segment should you use?A. loanCustomersDataSet.Merge(assetCustomersDataSet);B. loanCustomersDataSet.Merge(assetCustomersDataSet, true);C. assetCustomersDataSet.Merge(loanCustomersDataSet);D. assetCustomersDataSet.Merge(loanCustomersDataSet, true);

Suppose You create three Windows services named ES1, ES2, and ES3. You want to install all threeservices on a computer named CompanyA by using the Installer tool (Installutil.exe).On the command line of CompanyA, you enter and run the following command Install util ES1ES2 ES3During the installation process, ES3 throws an installation error. The installation processcompletes.How many of the three services are now installed on CompanyA?A. NoneB. OneC. TwoD. Three

Suppose You have a Dataset object named ES DataSet that is populated with data from a Microsoft SQLServer database. This object contains insertions, deletions, and updates to the data. You want toapply the data changes in ES DataSet to the database. You decide to use the Sulligent dataprovider. You need to create a data object that you will use to update the database. Which codesegment should you use?A. SqlDataReader myDataReader;B. SqlDataAdapter mySqlDataAdapter = new sqlDataAdapter();C. DataObject myDataObject = new DataObject();D. SqlParameter myParameter = new SqlParameter();

Suppose You are an application developer for Company.com. You are developing an application that canbe extended by using custom components. The application uses reflection to dynamically loadand invoke these custom components. In some cases, custom components will originate from asource that is not fully trusted, such as the Internet.You need to programmatically restrict the code access security policy under which customcomponents run so that custom components do not run with an elevated permission grant.What are two possible ways to achieve this goal? (Each correct answer presents a completesolution. Choose two)A. Create a new application domain and set the security policy level. Run custom components inthis application domain.B. Use permission class operations to modify the security policy.C. Implement custom permission classes to protect custom component resources.D. Programmatically modify the machine-level security policy file after loading a customcomponent.

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