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Microsoft 70-516 Exam Syllabus Topics:

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

1. How do you define a WCF Data Service query to grab the first 10 records. Options are something like:

A) DataServiceQuery<Order> selectedOrders = context.Orders.AddQueryOption("$filter", "10");
B) DataServiceQuery<Order> selectedOrders = context.Orders.AddQueryOption("$expand", "10");
C) DataServiceQuery<Order> selectedOrders = context.Orders.AddQueryOption("$select", "10");
D) DataServiceQuery<Order> selectedOrders = context.Orders.AddQueryOption("$top", "10");

2. 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 create an entity as shown in
the following code fragment.
<EntityType Name="ProductCategory">
<Key>
<PropertyRef Name="ProductCategoryID" />
</Key>
<Property Name="ProductCategoryID" Type="int" Nullable="false" StoreGeneraedPattern="Identity" />
<Property Name="ParentProductCategoryID" Type="int" />
<Property Name="Name" Type="nvarchar" Nullable="false" MaxLength="50" />
...
</EntityType>
You need to provide two entity-tracking fields:
-rowguid that is automatically generated when the entity is created
-ModifiedDate that is automatically set whenever the entity is updated. Which code fragment should you add to the .edmx file?

A) <Property Name="rowguid" Type="uniqueidentifier" Nullable="false" StoreGeneratedPattern="Identity"/> <Property Name="ModifiedDate" Type="timestamp" Nullable="false" StoreGeneratedPattern="Identity"/>
B) <Property Name="rowguid" Type="uniqueidentifier" Nullable="false" StoreGeneratedPattern="Identity"/> <Property Name="ModifiedDate" Type="timestamp" Nullable="false" StoreGeneratedPattern="Computed"/>
C) <Property Name="rowguid" Type="uniqueidentifier" Nullable="false" StoreGeneratedPattern="Computed"/> <Property Name="ModifiedDate" Type="timestamp" Nullable="false" StoreGeneratedPattern="Computed"/>
D) <Property Name="rowguid" Type="uniqueidentifier" Nullable="false" StoreGeneratedPattern="Computed"/> <Property Name="ModifiedDate" Type="timestamp" Nullable="false" StoreGeneratedPattern="Identity"/>

3. You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4.0 to create an application.
You create a Database Access Layer (DAL) that is database-independent. The DAL includes the following
code segment.
(Line numbers are included for reference only.)
01 static void ExecuteDbCommand(DbConnection connection)
02 {
03 if (connection != null){
04 using (connection){
05 try{
06 connection.Open();
07 DbCommand command = connection.CreateCommand();
08 command.CommandText = "INSERT INTO Categories (CategoryName)
VALUES ('Low Carb')";
09 command.ExecuteNonQuery();
10 }
11 ...
12 catch (Exception ex){
13 Trace.WriteLine("Exception.Message: " + ex.Message);
14 }
15 }
16 }
17 }
You need to log information about any error that occurs during data access.
You also need to log the data provider that accesses the database. Which code segment should you insert
at line 11?

A) catch (OleDbException ex){ Trace.WriteLine("ExceptionType: " + ex.InnerException.Source);
Trace.WriteLine("Message: " + ex.InnerException.Message);
}
B) catch (OleDbException ex){ Trace.WriteLine("ExceptionType: " + ex.Source);
Trace.WriteLine("Message: " + ex.Message);
}
C) catch (DbException ex){ Trace.WriteLine("ExceptionType: " + ex.Source);
Trace.WriteLine("Message: " + ex.Message);
}
D) catch (DbException ex){ Trace.WriteLine("ExceptionType: " + ex.InnerException.Source);
Trace.WriteLine("Message: " + ex.InnerException.Message);
}

4. There are Entities - States Class, Cities class. Deleting of state id raises exception. Which of the following?

A) ConstraintException
B) EntityException
C) EntityUpdateException
D) UpdateException

5. 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.
The application includes self-tracking entities as shown in the following diagram.

There is a Person entity names person1 that has TrackChanges turned on.
You need to delete all e-mail addresses that are associated with person1 by using an ObjectContext.
What are two possible code segments that you can use to achieve this goal?
(Each correct answer presents a complete solution. Choose two).

A) while(person1.EMailAddresses.Count>0){
person1.EmailAddresses.RemoveAt(0);
}
context.SaveChanges();
B) foreach(var email in person1.EMailAddresses){
email.MarkAsDeleted();
}
context.SaveChanges();
C) person1.EMailAddresses = new TrackableCollection<EMailAddress>(); context.SaveChanges();
D) person1.EMailAddresses = null; context.SaveChanges();

Solutions: