Microsoft Certification problems
- 1. You plan to deploy your ASP.NET application over XYZ?s intranet. The application uses data retrieved from a Microsoft SQL Server database. You want to use SQL Server connection pooling to optimize performance. You also need to protect confidential data stored on the server while minimizing administrative costs. You need to configure security for your application. What should you do?
Options- A. Use Microsoft Windows authentication in the application. Enable impersonation for users to access the SQL Server database from your application.
- B. Use Microsoft Windows authentication in the application. Use a single Windows account for users to access the SQL Server database from your application.
- C. Use form-based authentication in the application. Use the system administrator (sa) SQL Server login for users to access the SQL Server database from your application.
- D. Use form-based authentication in the application. Assign each user a separate SQL Server login to use to access the SQL Server database from your application. Discuss
Correct Answer: Use Microsoft Windows authentication in the application. Use a single Windows account for users to access the SQL Server database from your application.
Explanation:
We should only use one account to access the SQL Server database. This ensures that connection pooling is optimized.
Incorrect Answers:
A: We should only use a single account to access the SQL Server database.
C: Form-based authentication is less secure. Furthermore, running as the System Administrator with the sa login would compromise security.
D: Form-based authentication is less secure. Furthermore, creating a separate SQL Server login for each user is a daunting administrative task.
- 2. You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4 to create an application. The application connects to a Microsoft SQL Server 2008 database. The database includes a table named dbo. Documents that contains a column with large binary dat a. You are creating the Data Access Layer (DAL). You add the following code segment to query the dbo.Documents table. (Line numbers are included for reference only.) 01public void LoadDocuments(DbConnection cnx) 02{ 03var cmd = cnx.CreateCommand(); 04cmd.CommandText = "SELECT * FROM dbo.Documents"; 05... 06cnx.Open(); 07 08ReadDocument(reader); } You need to ensure that data can be read as a stream. Which code segment should you insert at line 07?
Options- A. var reader = cmd.ExecuteReader(CommandBehavior.Default);
- B. var reader = cmd.ExecuteReader(CommandBehavior.SchemaOnly);
- C. var reader = cmd.ExecuteReader(CommandBehavior.KeyInfo);
- D. var reader = cmd.ExecuteReader(CommandBehavior.SequentialAccess); Discuss
Correct Answer: var reader = cmd.ExecuteReader(CommandBehavior.SequentialAccess);
- 3. You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4 to create a Windows Communication Foundation (WCF) Data Services service. You discover that when an application submits a PUT or DELETE request to the Data Services service, it receives an error. You need to ensure that the application can access the service. Which header and request type should you use in the application?
Options- A. an X-HTTP-Method header as part of a POST request
- B. an X-HTTP-Method header as part of a GET request
- C. an HTTP ContentType header as part of a POST request
- D. an HTTP ContentType header as part of a GET request Discuss
Correct Answer: an X-HTTP-Method header as part of a POST request
- 4. You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4 to create an application. The application uses the ADO.NET Entity Framework to model entities. The application allows users to make changes to entities while disconnected from the central data store. You need to ensure that when the user connects to the central data store and retrieves new data, the application meets the following requirements: Changes made to the local data store in disconnected mode are preserved. Entities that have already been loaded into the local data store, but have not been modified by the user, are updated with the latest data. What should you do?
Options- A. Call the query's Execute method by using the MergeOptions.AppendOnly option.
- B. Call the query's Execute method by using the MergeOptions.OverwriteChanges option.
- C. Call the Refresh method of ObjectContext by using the RefreshMode.StoreWins option.
- D. Call the Refresh method of ObjectContext by using the RefreshMode.ClientWins method. Discuss
Correct Answer: Call the Refresh method of ObjectContext by using the RefreshMode.ClientWins method.
- 5. You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4 to create an application. The application connects to a Microsoft SQL Server database. The application has two DataTable objects that reference the Customers and Orders tables in the database. The application contains the following code segment. (Line numbers are included for reference only.) 01DataSet customerOrders = new DataSet(); 02customerOrders.EnforceConstraints = true; 03ForeignKeyConstraint ordersFK = new ForeignKeyConstraint("ordersFK", 04customerOrders.Tables["Customers"].Columns["CustomerID"], 05customerOrders.Tables["Orders"].Columns["CustomerID"]); 06 07customerOrders.Tables["Orders"].Constraints.Add(ordersFK); You need to ensure that an exception is thrown when you attempt to delete Customer records that have related Order records. Which code segment should you insert at line 06?
Options- A. ordersFK.DeleteRule = Rule.SetNull;
- B. ordersFK.DeleteRule = Rule.None;
- C. ordersFK.DeleteRule = Rule.SetDefault;
- D. ordersFK.DeleteRule = Rule.Cascade; Discuss
Correct Answer: ordersFK.DeleteRule = Rule.None;
- 6. You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4 to create an application. The application uses the ADO.NET Entity Framework to manage customer and related order records. You add a new order for an existing customer. You need to associate the Order entity with the Customer entity. What should you do?
Options- A. Set the Value property of the EntityReference of the Order entity.
- B. Call the Add method on the EntityCollection of the Order entity.
- C. Use the AddObject method of the ObjectContext to add both Order and Customer entities.
- D. Use the Attach method of the ObjectContext to add both Order and Customer entities. Discuss
Correct Answer: Set the Value property of the EntityReference of the Order entity.
- 7. You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4 to create an application. The application connects to a Microsoft SQL Server database. The application stores encrypted credit card numbers in the database. You need to ensure that credit card numbers can be extracted from the database. Which cryptography provider should you use?
Options- A. DSACryptoServiceProvider
- B. AESCryptoServiceProvider
- C. MD5CryptoServiceProvider
- D. SHA1CryptoServiceProvider Discuss
Correct Answer: AESCryptoServiceProvider
- 8. You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4 to create an application. You use the ADO.NET Entity Framework to model entities. You write the following code segment. (Line numbers are included for reference only.) 01AdventureWorksEntities context = New AdventureWorksEntities 02 03var q = from c in context.Customers 04where c.City == "London" 05orderby c.CompanyName 06select c; You need to ensure that the application meets the following requirements: "Compares the current values of unmodified properties with values returned from the data source". Marks the property as modified when the properties are not the same. Which code segment should you insert at line 02?
Options- A. context.MergeOption = MergeOption.AppendOnly;
- B. context.MergeOption = MergeOption.PreserveChanges;
- C. context.MergeOption = MergeOption.OverwriteChanges;
- D. context.MergeOption = MergeOption.NoTracking; Discuss
Correct Answer: context.MergeOption = MergeOption.PreserveChanges;
- 9. You use Microsoft Visual Studio 2010 and Microsoft ADO.NET Framework 4 to create an application. The application connects to a Microsoft SQL Server 2008 database. You use the ADO.NET LINQ to SQL model to retrieve data from the database. You use stored procedures to return multiple result sets. You need to ensure that the result sets are returned as strongly typed values. What should you do?
Options- A. Apply the FunctionAttribute and ResultTypeAttribute to the stored procedure function. Use the GetResult
- B. Apply the FunctionAttribute and ParameterAttribute to the stored procedure function and directly access the strongly typed object from the results collection.
- C. Apply the ResultTypeAttribute to the stored procedure function and directly access the strongly typed object from the results collection.
- D. Apply the ParameterAttribute to the stored procedure function. Use the GetResult Discuss
Correct Answer: Apply the FunctionAttribute and ResultTypeAttribute to the stored procedure function. Use the GetResult
- 10. You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4 to create an application. You use the ADO.NET Entity Data Model (EDM) to define a Customer entity. You need to add a new Customer to the data store without setting all the customer's properties. What should you do?
Options- A. Call the Create method of the Customer object.
- B. Call the CreateObject method of the Customer object.
- C. Override the Create method for the Customer object.
- D. Override the SaveChanges method for the Customer object. Discuss
Correct Answer: Call the CreateObject method of the Customer object.
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