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Microsoft TS: Web Applications Development with Microsoft .NET Framework 4 Sample Questions:

1. You are implementing an ASP.NET page.
The page includes a method named GetCustomerOrderDataSet that returns a DataSet.
The DataSet includes a DataTable named CustomerDetailsTable and a DataTable named
OrderDetailsTable.
You need to display the data in OrderDetailsTable in a DetailsView control named dtlView.
Which code segment should you use?

A) DataSet dataSet = GetCustomerOrderDataSet(); dtlView.DataSource = new DataTable("dataSet", "OrderDetailsTable"); dtlView.DataBind();
B) dtlView.DataSource = GetCustomerOrderDataSet(); dtlView.DataKeyNames = new string [] { "OrderDetailsTable"}; dtlView.DataBind();
C) dtlView.DataSource = GetCustomerOrderDataSet(); dtlView.DataSourceID = "OrderDetailsTable"; dtlView.DataBind();
D) dtlView.DataSource = GetCustomerOrderDataSet(); dtlView.DataMember = "OrderDetailsTable"; dtlView.DataBind();

2. You are implementing an ASP.NET Web application that retrieves data from a Microsoft SQL Server
database.
You add a page that includes the following data source control.
<asp:SqlDataSource id="sqlds" runat="server" ConnectionString="<%$ ConnectionStrings:MyDB %>" SelectCommand="SELECT * FROM Companies" />
The page is accessed frequently, but the data in the database rarely changes.
You need to cache the retrieved data so that the database is not queried each time the Web page is
accessed.
What should you do?

A) Add the following attributes to the SqlDataSource control.
DataSourceMode="DataReader"
EnableCaching="True"
CacheDuration="120"
B) Add the following configuration to the <system.web/> section of the web.config file.
<caching>
<sqlCacheDependency enabled="true" pollTime="120">
<databases>
<add name="MyDBCache" connectionStringName="MyDB" /> </databases> </sqlCacheDependency>
</caching>
C) Add the following configuration to the <system.web/> section of the web.config file.
<caching> <sqlCacheDependency enabled="true"> <databases> <add name="MyDBCache" connectionStringName="MyDB" pollTime="120"
/>
</databases>
</sqlCacheDependency>
</caching>
D) Add the following attributes to the SqlDataSource control.
DataSourceMode="DataSet"
EnableCaching="True"
CacheDuration="120"

3. You are developing an ASP.NET Web application.
You create a master page.
The master page requires a region where you can add page-specific content by using the ASP.NET page
designer.
You need to add a control to the master page to define the region.
Which control should you add?

A) Substituition
B) Content
C) ContentPlaceHolder
D) PlaceHolder

4. You are implementing an ASP.NET page.
Client-side script requires data.
Your application includes a class named Person with a Name property of type string.
The code-behind file of the page includes the following code segment.
public string JsonValue;
List<Person> people = GetPeopleList();
JavaScriptSerializer json = new JavaScriptSerializer();
You need to use the JavaScriptSerializer class to serialize only the Name property of each item in the
people list.
Which code segment should you use?

A) JsonValue = json.Serialize(people.SelectMany( p =>Name.AsEnumerable()));
B) var names = from person in people
select person;
JsonValue = "{" + json.Serialize(names) + "}";
C) var names = from person in people
select person;
JsonValue = json.Serialize(names);
D) JsonValue = json.Serialize(people.Select(p => p.Name));

5. You are troubleshooting an ASP.NET Web application.
System administrators have recently expanded your web farm from one to two servers.
Users are periodically reporting an error message about invalid view state.
You need to fix the problem.
What should you do?

A) Set the machineKey in machine.config to the same value on both servers.
B) Override the SavePageStateToPersistenceMedium and LoadPageStateFromPersistenceMedium methods in the page base class to serialize the view state to a local web server file.
C) Change the session state mode to SQL Server on both servers and ensure both servers use the same connection string.
D) Set viewStateEncryptionMode to Auto in web.config on both servers.

Solutions: