Microsoft TS: Accessing Data with Microsoft .NET Framework 4 - 070-516 Exam Practice Test
You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4.0 to create an application.
The application connects to a Microsoft SQL Server 2008 database. You add the following store procedure
to the database.
CREATE PROCEDURE GetProducts AS BEGIN
SELECT ProductID, Name, Price, Cost FROM Product END
You create a SqlDataAdapter named adapter to execute the stored procedure. You need to fill a DataTable
instance with the first 10 rows of the result set.
What are two possible code segments that you can use to achieve the goal?
The application connects to a Microsoft SQL Server 2008 database. You add the following store procedure
to the database.
CREATE PROCEDURE GetProducts AS BEGIN
SELECT ProductID, Name, Price, Cost FROM Product END
You create a SqlDataAdapter named adapter to execute the stored procedure. You need to fill a DataTable
instance with the first 10 rows of the result set.
What are two possible code segments that you can use to achieve the goal?
Correct Answer: A,D
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You use Microsoft .NET Framework 4.0 to develop an application that uses LINQ to SQL. The LINQ to SQL
model contains the Product entity.
A stored procedure named GetActiveProducts performs a query that returns the set of active products from
the database.
You need to invoke the stored procedure to return the active products, and you must ensure that the LINQ
to SQL context can track changes to these entities. What should you do?
model contains the Product entity.
A stored procedure named GetActiveProducts performs a query that returns the set of active products from
the database.
You need to invoke the stored procedure to return the active products, and you must ensure that the LINQ
to SQL context can track changes to these entities. What should you do?
Correct Answer: A
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You use Microsoft .NET Framework 4.0 and the Entity Framework to develop an application.
You create an Entity Data Model that has an entity named Customer. You set the optimistic concurrency
option for Customer.
You load and modify an instance of Customer named loadedCustomer, which is attached to an
ObjectContext named context.
You need to ensure that if a concurrency conflict occurs during a save, the application will load up-to-date
values from
the database while preserving local changes. Which code segment should you use?
You create an Entity Data Model that has an entity named Customer. You set the optimistic concurrency
option for Customer.
You load and modify an instance of Customer named loadedCustomer, which is attached to an
ObjectContext named context.
You need to ensure that if a concurrency conflict occurs during a save, the application will load up-to-date
values from
the database while preserving local changes. Which code segment should you use?
Correct Answer: A
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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?
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?
Correct Answer: A
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You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4.0 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?
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?
Correct Answer: D
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You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4.0 to create an application.
You use Microsoft ADO.NET Entity Data Model (EDM) to model entities.
You create an entity named Person with a schema defined by the following XML fragment.
<EntityType Name="CPerson"> <Key> <PropertyRef Name="PersonId" /> </Key>
<Property Name="PersonId" Type="Int32" Nullable="false" />
<Property Name="CompanyName" Type="String" />
<Property Name="ContactName" Type="String" />
<Property Name="ContactTitle" Type="String" />
<Property Name="Address" Type="String" />
</EntityType>
You need to ensure that entities within the application are able to add properties related to the city, region,
and country of Person's address.
What should you do?
You use Microsoft ADO.NET Entity Data Model (EDM) to model entities.
You create an entity named Person with a schema defined by the following XML fragment.
<EntityType Name="CPerson"> <Key> <PropertyRef Name="PersonId" /> </Key>
<Property Name="PersonId" Type="Int32" Nullable="false" />
<Property Name="CompanyName" Type="String" />
<Property Name="ContactName" Type="String" />
<Property Name="ContactTitle" Type="String" />
<Property Name="Address" Type="String" />
</EntityType>
You need to ensure that entities within the application are able to add properties related to the city, region,
and country of Person's address.
What should you do?
Correct Answer: C
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You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4.0 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 {
03 SqlDataReader dr = null;
04 ...
05 return dr;
06 }
You need to ensure that the following requirements are met: The SqlDataReader returned by the GetDataReader method can be used to retreive 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 the line 04?
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 {
03 SqlDataReader dr = null;
04 ...
05 return dr;
06 }
You need to ensure that the following requirements are met: The SqlDataReader returned by the GetDataReader method can be used to retreive 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 the line 04?
Correct Answer: C
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You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4.0 to create an application.
The application connects to a Microsoft SQL Server database. The application uses the ADO.NET Entity
Framework to model entities. The database includes objects based on the exhibit. (Click the Exhibit
button.)
The application includes the following code segment. (Line numbers are included for reference only.)
01 using (AdventureWorksEntities advWorksContext = new AdventureWorksEntities
()){
02 ...
03 }
You need to retrieve a list of all Products from todays sales orders for a specified customer.
You also need to ensure that the application uses the minimum amount of memory when retrieving the list.
Which code segment should you insert at line 02?
The application connects to a Microsoft SQL Server database. The application uses the ADO.NET Entity
Framework to model entities. The database includes objects based on the exhibit. (Click the Exhibit
button.)
The application includes the following code segment. (Line numbers are included for reference only.)
01 using (AdventureWorksEntities advWorksContext = new AdventureWorksEntities
()){
02 ...
03 }
You need to retrieve a list of all Products from todays sales orders for a specified customer.
You also need to ensure that the application uses the minimum amount of memory when retrieving the list.
Which code segment should you insert at line 02?
Correct Answer: A
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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 add the following table to the database.
CREATE TABLE ObjectCache ( Id INT IDENTITY PRIMARY KEY, SerializedObjectData XML)
You write the following code segment to retreive records from the ObjectCache table. (Line numbers are included for reference only.)
01 string s = GetConnectionStringFromConfigFile("xmldb");
02 using (SqlConnection conn = new SqlConnection(s))
03 using (SqlCommand cmd = new SqlCommand("select * from ObjectCache",
conn))
04 {
05 conn.Open();
06 SqlDataReader rdr = cmd.ExecuteReader();
07 while(rdr.Read())
08 {
09 ...
10 DeserializeObject(obj);
11 }
12 }
You need to retreive the data from the SerializedObjectData column and pass it to a method named
DeserializeObject.
Which line of code should you insert at line 09?
CREATE TABLE ObjectCache ( Id INT IDENTITY PRIMARY KEY, SerializedObjectData XML)
You write the following code segment to retreive records from the ObjectCache table. (Line numbers are included for reference only.)
01 string s = GetConnectionStringFromConfigFile("xmldb");
02 using (SqlConnection conn = new SqlConnection(s))
03 using (SqlCommand cmd = new SqlCommand("select * from ObjectCache",
conn))
04 {
05 conn.Open();
06 SqlDataReader rdr = cmd.ExecuteReader();
07 while(rdr.Read())
08 {
09 ...
10 DeserializeObject(obj);
11 }
12 }
You need to retreive the data from the SerializedObjectData column and pass it to a method named
DeserializeObject.
Which line of code should you insert at line 09?
Correct Answer: B
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You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4.0 to develop an application that
uses LINQ to SQL.
You create a data model name AdvWorksDataContext, and you add the Product table to the data model.
The Product table contains a decimal column named ListPrice and a string column named Color.
You need to update ListPrice column where the product color is Black or Red. Which code segment should
you use?
uses LINQ to SQL.
You create a data model name AdvWorksDataContext, and you add the Product table to the data model.
The Product table contains a decimal column named ListPrice and a string column named Color.
You need to update ListPrice column where the product color is Black or Red. Which code segment should
you use?
Correct Answer: B
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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 define a Category class by writing the following code segment. (Line numbers are included for
reference only.)
01 public class Category
02 {
03 public int CategoryID { get; set; }
04 public string CategoryName { get; set; }
05 public string Description { get; set; }
06 public byte[] Picture { get; set; }
07 ...
08 }
You need to add a collection named Products to the Category class. You also need to ensure that the
collection supports deferred loading.
Which code segment should you insert at line 07?
The application uses the ADO.NET Entity Framework to model entities.
You define a Category class by writing the following code segment. (Line numbers are included for
reference only.)
01 public class Category
02 {
03 public int CategoryID { get; set; }
04 public string CategoryName { get; set; }
05 public string Description { get; set; }
06 public byte[] Picture { get; set; }
07 ...
08 }
You need to add a collection named Products to the Category class. You also need to ensure that the
collection supports deferred loading.
Which code segment should you insert at line 07?
Correct Answer: D
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You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4.0 to create an application.
The application connects to a Microsoft SQL Server database. You create a DataSet object in the
application.
You add two DataTable objects named App_Products and App_Categories to the DataSet.
You add the following code segment to populate the DataSet object.
(Line numbers are included for reference only.)
01 public void Fill(SqlConnection cnx, DataSet ds)
02 {
03 var cmd = cnx.CreateCommand();
04 cmd.CommandText = "SELECT * FROM dbo.Products; " + "SELECT * FROM
dbo.Categories";
05 var adapter = new SqlDataAdapter(cmd);
06 ...
07 }
You need to ensure that App_Products and App_Categories are populated from the dbo.Products and
dbo.Categories database tables.
Which code segment should you insert at line 06?
The application connects to a Microsoft SQL Server database. You create a DataSet object in the
application.
You add two DataTable objects named App_Products and App_Categories to the DataSet.
You add the following code segment to populate the DataSet object.
(Line numbers are included for reference only.)
01 public void Fill(SqlConnection cnx, DataSet ds)
02 {
03 var cmd = cnx.CreateCommand();
04 cmd.CommandText = "SELECT * FROM dbo.Products; " + "SELECT * FROM
dbo.Categories";
05 var adapter = new SqlDataAdapter(cmd);
06 ...
07 }
You need to ensure that App_Products and App_Categories are populated from the dbo.Products and
dbo.Categories database tables.
Which code segment should you insert at line 06?
Correct Answer: C
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You are adding a process to the application. The process performs the following actions:
1.Opens a ContosoEntities context object named context1.
2.Loads a Part object into a variable named part1.
3.Calls the Dispose() method on context1.
4.Updates the data in part1.
5.Updates the database by using a new ContosoEntities context object named context2.
You need to update the database with the changed data from part1. What should you do?
1.Opens a ContosoEntities context object named context1.
2.Loads a Part object into a variable named part1.
3.Calls the Dispose() method on context1.
4.Updates the data in part1.
5.Updates the database by using a new ContosoEntities context object named context2.
You need to update the database with the changed data from part1. What should you do?
Correct Answer: B
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You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4.0 to develop an application. You use the Entity Framework Designer to create the following Entity Data Model.

The application contains a class as shown in the following code segment. (Line numbers are included for
reference only.)
01 public class MyBaseClass : EntityObject
02 {
03 ....
04 }
You need to ensure that all generated entities inherit from MyBaseClass. What should you do?

The application contains a class as shown in the following code segment. (Line numbers are included for
reference only.)
01 public class MyBaseClass : EntityObject
02 {
03 ....
04 }
You need to ensure that all generated entities inherit from MyBaseClass. What should you do?
Correct Answer: B
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