70-523 Exam

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Microsoft 70-523 Exam Offical Information

1. 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?
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
Answer: A

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 that contains information about all the employees. The database table has a field named EmployeeType that identifies whether an employee is a Contractor or a Permanent employee. You declare the Employee entity base type.
You create a new Association entity named Contractor that inherits the Employee base type. You need to ensure that all Contractors are bound to the Contractor class. What should you do?
A. Modify the .edmx file to include the following line of code.
FromRole="EmployeeType" ToRole="Contractor" />
B. Modify the .edmx file to include the following line of code.
Value="Contractor" />
C. Use the Entity Data Model Designer to set up an association between the Contractor class and
EmployeeType.
D. Use the Entity Data Model Designer to set up a referential constraint between the primary key of the Contractor class and EmployeeType.
Answer: B

3. 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?
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.
Answer: D

4. You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4 to create an application. You are creating the data layer of the application. You write the following code segment. (Line numbers are included for reference only.)
01 public static SqlDataReader GetDataReader(string sql){
02 SqlDataReader dr;
03
04 return dr;
05 }
You need to ensure that the following requirements are met:
?The SqlDataReader returned by the GetDataReader method can be used to retrieve rows from the database.
?SQL connections opened within the GetDataReader method will close when the SqlDataReader is closed.
Which code segment should you insert at line 03?
A. using (SqlConnection cnn=new SqlConnection(strCnn)){
try {
SqlCommand cmd =new SqlCommand(sql, cnn);
cnn.Open();
dr = cmd.ExecuteReader();
}
catch {
throw;
}
}
B. SqlConnection cnn=new SqlConnection(strCnn);
SqlCommand cmd =new SqlCommand(sql, cnn);
cnn.Open();
try {
dr = cmd.ExecuteReader();
}
finally {
cnn.Close();
}
C. SqlConnection cnn=new SqlConnection(strCnn);
SqlCommand cmd =new SqlCommand(sql, cnn);
cnn.Open();
try {
dr = cmd.ExecuteReader();
cnn.Close();
}
catch {
throw;
}
D. SqlConnection cnn=new SqlConnection(strCnn);
SqlCommand cmd =new SqlCommand(sql, cnn);
cnn.Open();
try {
dr = cmd.ExecuteReader(CommandBehavior.CloseConnection);
}
catch {
cnn.Close();
throw;
}
Answer: D

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?
A. ordersFK.DeleteRule = Rule.SetDefault;
B. ordersFK.DeleteRule = Rule.None;
C. ordersFK.DeleteRule = Rule.SetNull;
D. ordersFK.DeleteRule = Rule.Cascade;
Answer: B