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Microsoft TS: Accessing Data with Microsoft .NET Framework 4 Sample Questions:

1. The application must be configured to run on a new development computer.
You need to configure the connection string to point to the existing named instance.
Which connection string fragment should you use?

A) Data Source=SQL01\INST01
B) Data Source=INST01\SQL01
C) Initial Catalog= SQL01\INST01
D) Initial Catalog= INST01\SQL01

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 RecoveryComplete method of the TransactionManager class.
B) Call the EnlistDurable method of the Transaction class.
C) Call the Reenlist 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 create an application.
You use Plain Old CLR objects (POCO) to model your entities.
The application communicates with a Windows Communication Foundation (WCF) Data Services service.
You need to ensure that entities can be sent to the service as XML. What should you do?

A) Apply the [DataContract(IsReference = true)] attribute to the entities.
B) Apply the [DataContract(IsReference = false)] attribute to the entities.
C) Apply the [Serializable] attribute to the entities.
D) Apply the virtual keyword to the entity properties.

4. 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 over the network. The application uses data
from multiple related database tables.
You need to ensure that the application can be used if the connection is disconnected or unavailable.
Which object type should you use to store data from the database tables?

A) DataAdapter
B) Data Services
C) DataReader
D) DataSet

5. You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4.0 to develop an application that
uses the Entity Framework.
The application has an entity model that includes SalesTerritory and SalesPerson entities as shown in the
following diagram.

You need to calculate the total bonus for all sales people in each sales territory. Which code segment should you use?

A) from person in model.SalesPersons group person by person.SalesTerritory into territoryByPerson select new {
SalesTerritory = territoryByPerson.Key,
TotalBonus = territoryByPerson.Sum(person => person.Bonus)
};
B) from territory in model.SalesTerritories group territory by territory.SalesPerson into personByTerritories select new {
SalesTerritory = personByTerritories.Key,
TotalBonus = personByTerritories.Key.Sum(person => person.Bonus)
};
C) model.SalesPersons .GroupBy(person => person.SalesTerritory) .SelectMany(group => group.Key.SalesPersons) .Sum(person => person.Bonus);
D) model.SalesTerritories .GroupBy(territory => territory.SalesPersons) .SelectMany(group => group.Key) .Sum(person => person.Bonus);

Solutions: