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Code d'Examen: 070-561-Csharp
Nom d'Examen: Microsoft (TS:MS.NET Framework 3.5,ADO.NET Application Development)
Questions et réponses: 100 Q&As
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NO.1 You create an application by using the Microsoft .NET Framework 3.5 and Microsoft ADO.NET.
The application has an untyped DataTable object named tblCustomer. The tblCustomer object
contains a DataColumn named Age. You plan to create a ColumnChanging event handler for the
tblCustomer object. You need to ensure that when the existing data is modified, any value in the
Age DataColumn that is greater than 100 is set to DBNull. Which code segment should you use?
A.void ValidateChanges(object sender, DataColumnChangeEventArgs e){ if
(e.Column.ColumnName == "Age" & e.ProposedValue!=DBNull.Value){ if ((int)e.Row["Age"] >
100){ e.Row["Age"] = DBNull.Value; } }}
B.void ValidateChanges(object sender, DataColumnChangeEventArgs e){ if
(e.Column.ColumnName == "Age" & e.ProposedValue!=DBNull.Value){ if ((int)e.ProposedValue >
100){ e.Row["Age"] = DBNull.Value; } }}
C.void ValidateChanges(object sender, DataColumnChangeEventArgs e){ if
(e.Column.ColumnName == "Age" & e.ProposedValue!=DBNull.Value) { if ((int)e.Row["Age"] >
100){ e.ProposedValue = DBNull.Value; } }}
D.void ValidateChanges(object sender, DataColumnChangeEventArgs e){if
(e.Column.ColumnName == "Age" & e.ProposedValue!=DBNull.Value) { if ((int)e.ProposedValue >
100) { e.ProposedValue = DBNull.Value; } }}
Answer:D
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NO.2 You create an application by using the Microsoft .NET Framework 3.5 and Microsoft ADO.NET.
The application connects to a Microsoft SQL Server 2005 database. You write the following code
segment. string sql = "Select InvoiceNo,OrderAmount from Orders"; SqlDataAdapter adp = new
SqlDataAdapter(sql, con); DataTable tblOrders = new DataTable(); adp.Fill(tblOrders); If the value
of the OrderAmount column is greater than 1000, then a discount of 5 percent is calculated. You
need to create a DataColumn object named Discount that contains the discount value for each row
in the tblOrders DataTable. Which code segment should you use?
A.DataColumn col = new DataColumn("Discount");col.Expression =
"IIF(OrderAmount>1000,OrderAmount*5/100,0)";tblOrders.Columns.Add(col);
B.DataColumn col = new DataColumn("Discount");col.DefaultValue =
"IIF(OrderAmount>1000,OrderAmount*5/100,0)";tblOrders.Columns.Add(col);
C.DataColumn col = new
DataColumn("Discount");tblOrders.Columns.Add(col);tblOrders.Compute("Discount=OrderAmou
nt*5/100","OrderAmount>1000");
D.DataColumn col = new DataColumn("Discount");tblOrders.Columns.Add(col);col.Expression=
tblOrders.Compute("OrderAmount*5/100","OrderAmount>1000").ToString();
Answer:A
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NO.3 You create an application by using the Microsoft .NET Framework 3.5 and Microsoft ADO.NET.
You write the following code segment. DataTable tblCustomer = new DataTable("Customer");
DataColumn parentCol= tblCustomer.Columns.Add("ID", typeof(int)); //Other columns added for
tblCustomer DataTable tblOrder = new DataTable("Order"); DataColumn
childCol=tblOrder.Columns.Add("CustomerID",typeof(int)); //Other columns added for tblOrder
DataSet ds = new DataSet(); ds.Tables.Add(tblOrder); ds.Tables.Add(tblCustomer); The
CustomerID column relates the Order DataTable to the Customer DataTable. You need to ensure
that when you delete a row in the Customer DataTable, the corresponding row in the Order
DataTable is deleted. Which code segment should you use?
A.ForeignKeyConstraint fCon = new ForeignKeyConstraint(parentCol, childCol);fCon.DeleteRule
= Rule.SetNull;tblOrder.Constraints.Add(fCon);
B.ForeignKeyConstraint fCon = new ForeignKeyConstraint(parentCol, childCol);fCon.DeleteRule
= Rule.Cascade;tblOrder.Constraints.Add(fCon);
C.ForeignKeyConstraint fCon = new ForeignKeyConstraint(parentCol, childCol);fCon.DeleteRule
= Rule.SetNull;tblCustomer.Constraints.Add(fCon);
D.ForeignKeyConstraint fCon = new ForeignKeyConstraint(parentCol, childCol);fCon.DeleteRule
= Rule.Cascade;tblCustomer.Constraints.Add(fCon);
Answer:B
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NO.4 You create an application by using the Microsoft .NET Framework 3.5 and Microsoft ADO.NET.
The application uses the following LINQ query. var query = from o in orderLinesQuery where
(string)o["CarrierTrackingNumber"] == "AEB6-4356-80" select new { SalesOrderID =
o.Field("SalesOrderID"), OrderDate = o.Field("OrderDate") }; The CarrierTrackingNumber field in
the DataRow is nullable. You need to ensure that an exception does not occur if the
CarrierTrackingNumber field has a null value. Which code segment should you use?
A.var query = from o in orderLinesQuerywhere !o.IsNull("CarrierTrackingNumber")
&(string)o["CarrierTrackingNumber"] == "AEB6-4356-80"select new { SalesOrderID =
o.Field("SalesOrderID"), OrderDate = o.Field("OrderDate")};
B.var query = from o in orderLinesQuerywhere o.IsNull("CarrierTrackingNumber")
&(string)o["CarrierTrackingNumber"] == "AEB6-4356-80"select new { SalesOrderID =
o.Field("SalesOrderID"), OrderDate = o.Field("OrderDate")};
C.var query = from o in orderLinesQuerywhere o.Field("CarrierTrackingNumber") ==
"AEB6-4356-80"select new { SalesOrderID = o.Field("SalesOrderID"), OrderDate =
o.Field("OrderDate")};
D.var query = from o in orderLinesQuerywhere (string)o["CarrierTrackingNumber"] ==
DbNull.Value &(string)o["CarrierTrackingNumber"] == "AEB6-4356-80"select new { SalesOrderID =
o.Field("SalesOrderID"), OrderDate = o.Field("OrderDate") };
Answer:C
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NO.5 You create an application by using the Microsoft .NET Framework 3.5 and Microsoft ADO.NET.
The application has the following typed DataSets: A DataSet named DSCustomers with a
DataTable named Customers A DataSet named DSOrders with a DataTable named Orders You
write the following code segment. DSCustomers dsCust = new DSCustomers(); DSOrders dsOrd =
new DSOrders(); ... IDataReader rd; You need to expose the Customers DataTable and the Orders
DataTable by using a DataReader stream. Which code segment should you add?
A.rd = dsCust.CreateDataReader(dsOrd.Orders);
B.rd = dsCust.CreateDataReader(dsCust.Customers, dsOrd.Orders);
C.dsCust.Load(dsOrd.CreateDataReader(), LoadOption.Upsert, "Customers");rd =
dsCust.CreateDataReader();
D.DataTable tbl = new
DataTable();tbl.Load(dsOrd.Orders.CreateDataReader());tbl.Load(dsCust.Customers.CreateDataR
eader());rd = tbl.CreateDataReader();
Answer:B
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NO.6 You create an application by using the Microsoft .NET Framework 3.5 and Microsoft ADO.NET. The
application connects to a Microsoft SQL Server 2005 database. You write the following code segment.
string query = "Select EmpNo, EmpName from dbo.Table_1; select Name,Age from dbo.Table_2";
SqlCommand command = new SqlCommand(query, connection); SqlDataReader reader =
command.ExecuteReader(); You need to ensure that the application reads all the rows returned by the
code segment. Which code segment should you use?
A.while (reader.NextResult()){ Console.WriteLine(String.Format("{0}, {1}",reader[0], reader[1]));
reader.Read();}
B.while (reader.Read()){ Console.WriteLine(String.Format("{0}, {1}",reader[0], reader[1]));
reader.NextResult();}
C.while (reader.Read()){ Console.WriteLine(String.Format("{0}, {1}",reader[0],
reader[1]));}reader.NextResult();while (reader.Read()){ Console.WriteLine(String.Format("{0},
{1}",reader[0], reader[1]));}
D.while (reader.NextResult()){ Console.WriteLine(String.Format("{0}, {1}",reader[0],
reader[1]));}reader.Read();while (reader.NextResult()){ Console.WriteLine(String.Format("{0},
{1}",reader[0], reader[1]));}
Answer:C
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NO.7 You create an application by using Microsoft .NET Framework 3.5. You use Microsoft ADO.NET
Entity Framework for persistence. You write a conceptual schema definition for the entity data
model in the following manner. You need to retrieve all the InvoiceNo property values for the
Customer entity instance that has the CustomerID property value as 1. Which entity SQL query
should you use?
A.SELECT o.InvoiceNo FROM ContosoEntities.Order as o,ContosoEntities.Customer as c WHERE
c.CustomerID=1
B.SELECT o.InvoiceNo FROM ContosoEntities.Order as o, ROW(o.Customer) as c WHERE
c.CustomerID=1
C.SELECT o.InvoiceNo FROM ContosoEntities.Order as o WHERE (Select REF(c) from
ContosoEntities.Customer as c WHERE CustomerID=1)
D.SELECT o.InvoiceNo FROM ContosoEntities.Order as o, o.Customer as c WHERE
c.CustomerID=1
Answer:D
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NO.8 You create an application by using the Microsoft .NET Framework 3.5 and Microsoft ADO.NET.
The application connects to a Microsoft SQL Server 2005 database. You run the application under
a Least-Privilege User Account (LUA) of the Windows operating system. You need to configure the
SQL Server 2005 connection string in the app.config file to use SQL Server Express user
instances. Which code segment should you use?
A.Data Source=\\SQLExpress;Integrated
Security=true;AttachDBFilename=|DataDirectory|\InstanceDB.mdf;Initial Catalog=InstanceDB;
B.Data Source=\\SQLExpress;Integrated Security=true;User
Instance=true;AttachDBFilename=InstanceDB.mdf;Initial Catalog=InstanceDB;
C.Data Source=\\SQLExpress;Integrated Security=true;User
Instance=true;AttachDBFilename=|DataDirectory|\InstanceDB.mdf;Initial Catalog=InstanceDB;
D.Data Source=\\SQLExpress;Integrated Security=false;User
Instance=true;AttachDBFilename=|DataDirectory|\InstanceDB.mdf;Initial Catalog=InstanceDB;
Answer:C
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