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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Modeling Data | 20% | - Define and model data structures
|
| Topic 2: Developing and Deploying Reliable Applications | 18% | - Secure data access
|
| Topic 3: Managing Connections and Context | 18% | - Manage concurrency
|
| Topic 4: Manipulating Data | 22% | - Handle change tracking
|
| Topic 5: Querying Data | 22% | - Query with WCF Data Services
|
1. You use Microsoft Visual Studio 2010 and .NET Framework 4.0 to create an application.
The application connects to a Microsoft SQL Server 2008 database. The application contains the following
code segment.
string SQL = string.Format("SELECT * FROM Customer WHERE CompanyName LIKE '%
{0}%', companyName);
var cmd = new SqlCommand(SQL, con);
You need to reduce the vulnerability to SQL injection attacks. Which code segment should you use?
A) string SQL = "SELECT * FROM Customer Where " + "CompanyName LIKE @companyName"; var cmd = new SqlCommand(SQL,con); var param = new SqlParameter ("@companyName", string.Format("%{0}%", companyName));
B) string SQL = "SELECT" * FROM Customer @companyName; var cmd = new sqlcommand(SQL,con); cmd.Parameters.AddWithValue("companyName", string.format("where companyName LIKE '%{0}%'", companyName));
C) string SQL = "SELECT * FROM Customer Where " + "CompanyName LIKE @companyName"; var cmd = new SqlCommand(SQL,con); cmd.Parameters.AddWithValue("@companyName", string.Format("%{0}%", companyName));
D) string SQL = string.Format("SELECT * FROM " + " Customer Where CompanyName LIKE {0}",
new SqlCommand("@companyName", string.format("%{0}%", companyName))); var cmd = new SqlCommand(SQL, con);
2. You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4.0 to create an application.
The application connects to several SQL Server databases. You create a function that modifies customer
records that are stored in multiple databases.
All updates for a given record are performed in a single transaction. You need to ensure that all transactions
can be recovered. What should you do?
A) Call the Reenlist method of the TransactionManager class.
B) Call the EnlistDurable method of the Transaction class.
C) Call the RecoveryComplete method of the TransactionManager class.
D) Call the EnlistVolatile method of the Transaction class.
3. You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4.0 to develop an application.
You use the ADO.NET Entity Framework Designer to model entities.
You need to associate a previously deserialized entity named person1 to an object context named model
and persist changes to the database.
Which code segment should you use?
A) model.AttachTo("People", person1); model.SaveChanges();
B) model.People.Attach(person1); model.SaveChanges();
C) model.People.ApplyChanges(person1) ; model.SaveChanges();
D) person1.AcceptChanges(); model.SaveChanges();
4. You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4.0 to develop an application that
connects to a Microsoft SQL Server 2008 database.
You use the ADO.NET Entity Framework Designer to model entities. You add the following stored
procedure to the database, and you add a function import to the model.
CREATE PROCEDURE [dbo].[InsertDepartment] @Name nvarchar(50), @ID int NULL OUTPUT
AS INSERT INTO Department (Name) VALUES (@Name) SELECT @ID = SCOPE_IDENTITY()
You need to insert a new department and display the generated ID. Which code segment should you use?
A) using (SchoolEntities context = new SchoolEntities())
{
ObjectParameter id = null;
context.InsertDepartment("Department 1", id);
Console.WriteLine(id.Value);
}
B) using (SchoolEntities context = new SchoolEntities())
{
var id = new ObjectParameter("ID", null));
context.InsertDepartment("Department 1", id);
Console.WriteLine(id.Value);
}
C) using (SchoolEntities context = new SchoolEntities())
{
var id = new ObjectParameter("ID", typeof(int));
context.InsertDepartment("Department 1", id);
Console.WriteLine(id.Value);
}
D) using (SchoolEntities context = new SchoolEntities())
{
var id = context.InsertDepartment("Department 1", null);
Console.WriteLine(id);
}
5. You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4.0 to create an application.
The application uses the ADO.NET Entity Framework to model entities.
You need to ensure that the model and mapping files are not deployed as application resources. What
should you do?
A) Set the value of the .edmx file's Build Action property to Copy to Output.
B) Modify the connection string in the application's .config file to refer to the absolute physical path to the .edmx file.
C) Modify the connection string in the application's .config file to refer to the relative path to the .edmx file.
D) Set the value of the .edmx file's Metadata Artifact Processing property to Copy to Output Directory.
Solutions:
| Question # 1 Answer: C | Question # 2 Answer: B | Question # 3 Answer: A | Question # 4 Answer: C | Question # 5 Answer: D |
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