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Exam Code: 70-515
Exam Name: TS: Web Applications Development with Microsoft .NET Framework 4
Certification Provider: Microsoft
Corresponding Certifications: MCPD, MCPD: Web Developer 4, MCTS, MCTS: Microsoft .NET Framework 4, Web Applications

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QUESTION 111
You are developing an ASP.NET Web page that contains input controls, validation controls, and a button named btnSubmit.
The page has the following code-behind. (Line numbers are included for reference only.)
01 public partial class _Default : System.Web.UI.Page
02 {
03 protected void SaveToDatabase()
04 {
05
06 }
07
08 protected void btnSubmit_Click(object sender, EventArgs e)
09 {
10
11 }
12 }
You need to ensure that all data that is submitted passes validation before the data is saved in a database.
What should you do?

A.    Add the following method override.
protected override void OnInit(EventArgs e)
{
base.OnInit(e);
if (Page.IsValid) this.SaveToDatabase();
}
B.    Add the following method override.
protected override void OnLoad(EventArgs e)
{
base.OnLoad(e);
if (Page.IsValid) this.SaveToDatabase();

C.    Add the following method override.
protected override void OnPreRender(EventArgs e)
{
base.OnPreRender(e);
if (Page.IsValid) this.SaveToDatabase();
}
D.    Add the following code segment at line 10.
if (Page.IsValid) this.SaveToDatabase();

Answer: D

QUESTION 112
You are implementing an ASP.NET application that includes a page named TestPage.aspx. TestPage.aspx uses a master page named TestMaster.master.
You add the following code to the TestPage.aspx code-behind file to read a TestMaster.master public property named CityName.
Protected Sub Page_Load(ByVal sender As Object,
ByVal e As System.EventArgs) Handles Me.Load
Dim s As String = Master.CityName
End Sub
You need to ensure that TestPage.aspx can access the CityName property.
What should you do?

A.    Add the following directive to TestPage.aspx.
<%@ MasterType VirtualPath="~/TestMaster.master" %>
B.    Add the following directive to TestPage.aspx.
<%@ PreviousPageType VirtualPath="~/TestMaster.master" %>
C.    Set the Strict attribute in the @ Master directive of the TestMaster.master page to true.
D.    Set the Explicit attribute in the @ Master directive of the TestMaster.master page to true.

Answer: A

QUESTION 113
You are creating an ASP.NET Web site.
The site has a master page named Custom.master.
The code-behind file for Custom.master contains the following code segment:
Partial Public Class Custom Inherits System.Web.UI.MasterPage
Public Property Region As String
Protected Sub Page_Load(ByVal sender As Object,
ByVal e As System.EventArgs) Handles Me.Load
End Sub
End Class
You create a new ASP.NET page and specify Custom.master as its master page.
You add a Label control named lblRegion to the new page.
You need to display the value of the master page's Region property in lblRegion.
What should you do?

A.    Add the following code segment to the Page_Load method of the page code-behind file.
Dim custom As Custom = Me.Parent
lblRegion.Text = custom.Region
B.    Add the following code segment to the Page_Load method of the page code-behind file.
Dim custom As Custom = Me.Master
lblRegion.Text = custom.Region
C.    Add the following code segment to the Page_Load method of the Custom.Master.vb
code-behind file.
Dim lblRegion As Label = Page.FindControl("lblRegion")
lblRegion.Text = Me.Region
D.    Add the following code segment to the Page_Load method of the Custom.Master.vb
code-behind file.
Dim lblRegion As Label = Master.FindControl("lblRegion")
lblRegion.Text = Me.Region

Answer: B

QUESTION 114
You are implementing an ASP.NET Web site.
The site allows users to explicitly choose the display language for the site's Web pages.
You create a Web page that contains a DropDownList named ddlLanguage, as shown in the following code segment:
<asp:DropDownList ID="ddlLanguage" runat="server"
AutoPostBack="True" ClientIDMode="Static"
OnSelectedIndexChanged="SelectedLanguageChanged">
<asp:ListItem Value="en">English</asp:ListItem>
<asp:ListItem Value="es">Spanish</asp:ListItem>
<asp:ListItem Value="fr">French</asp:ListItem>
<asp:ListItem Value="de">German</asp:ListItem>
</asp:DropDownList>
The site contains localized resources for all page content that must be translated into the language that is selected by the user.
You need to add code to ensure that the page displays content in the selected language if the user selects a language in the drop-down list.
Which code segment should you use?

A.    Protected Sub SelectedLanguageChanged(ByVal sender As Object,
ByVal e As EventArgs) Handles ddlLanguage.SelectedIndexChanged
Page.UICulture = ddlLanguage.SelectedValue
End Sub
B.    Protected Overrides Sub InitializeCulture()
Page.UICulture = Request.Form("ddlLanguage")
End Sub
C.    Protected Sub Page_Load(ByVal sender As Object,
ByVal e As System.EventArgs) Handles Me.Load
Page.Culture = Request.Form("ddlLanguage")
End Sub
D.    Protected Overrides Sub InitializeCulture()
Page.Culture = ddlLanguage.SelectedValue
End Sub

Answer: B

QUESTION 115
You are implementing an ASP.NET application that includes the following requirements.
Retrieve the number of active bugs from the cache, if the number is present.
If the number is not found in the cache, call a method named GetActiveBugs, and save the result under the ActiveBugs cache key.
Ensure that cached data expires after 30 seconds.
You need to add code to fulfill the requirements.
Which code segment should you add?

A.    Dim numOfActiveBugs As Integer? =
DirectCast(Cache("ActiveBugs"), Integer?)
If Not numOfActiveBugs.HasValue Then
Dim result As Int32 = GetActiveBugs()
Cache.Insert("ActiveBugs", result, Nothing,
DateTime.Now.AddSeconds(30), Cache.NoSlidingExpiration)
numOfActiveBugs = result
End If
ActiveBugs = numOfActiveBugs.Value
B.    Dim numOfActiveBugs As Integer = CInt(Cache.Get("ActiveBugs"))
If numOfActiveBugs <> 0 Then
Dim result As Integer = GetActiveBugs()
Cache.Insert("ActiveBugs", result, Nothing,
DateTime.Now.AddSeconds(30), Cache.NoSlidingExpiration)
numOfActiveBugs = result
End If
ActiveBugs = numOfActiveBugs
C.    Dim numOfActiveBugs As Integer = 0
If Cache("ActiveBugs") Is Nothing Then
Dim result As Integer = GetActiveBugs()
Cache.Add("ActiveBugs", result, Nothing,
DateTime.Now.AddSeconds(30),Cache.NoSlidingExpiration,
CacheItemPriority.Normal, Nothing)
numOfActiveBugs = resultv End If
ActiveBugs = numOfActiveBugs
D.    Dim numOfActiveBugs As Integer =
DirectCast(Cache("ActiveBugs"), Integer?)
If Not numOfActiveBugs.HasValue Then
Dim result As Integer = GetActiveBugs()
Cache.Insert("ActiveBugs", result, Nothing,
Cache.NoAbsoluteExpiration, TimeSpan.FromSeconds(30))
numOfActiveBugs = result
End If
ActiveBugs = numOfActiveBugs.Value

Answer: A

QUESTION 116
You are implementing a method in an ASP.NET application that includes the following requirements.
Store the number of active bugs in the cache.
The value should remain in the cache when there are calls more often than every 15 seconds. The value should be removed from the cache after 60 seconds.
You need to add code to meet the requirements.
Which code segment should you add?

A.    Cache.Insert("ActiveBugs", result,
Nothing,DateTime.Now.AddSeconds(60), TimeSpan.FromSeconds(15))
B.    Cache.Insert("Trigger", DateTime.Now,
NothingDateTime.Now.AddSeconds(60), Cache.NoSlidingExpiration)
Dim cd As CacheDependency = New CacheDependency(Nothing,New String() {"Trigger"})
Cache.Insert("ActiveBugs", result, cd, Cache.NoAbsoluteExpiration, TimeSpan.FromSeconds(15))
C.    Cache.Insert("ActiveBugs", result, Nothing,
Cache.NoAbsoluteExpiration, TimeSpan.FromSeconds(15))
Dim cd As CacheDependency = New CacheDependency(Nothing,
New String() {"ActiveBugs"})
Cache.Insert("Trigger", DateTime.Now, cd,
DateTime.Now.AddSeconds(60), Cache.NoSlidingExpiration)
D.    Dim cd As CacheDependency = New CacheDependency(Nothing,
New String() {"Trigger"})
Cache.Insert("Trigger", DateTime.Now, Nothing,
DateTime.Now.AddSeconds(60), Cache.NoSlidingExpiration)
Cache.Insert("ActiveBugs", result, cd, Cache.NoAbsoluteExpiration, TimeSpan.FromSeconds(15))

Answer: B

QUESTION 117
You are implementing an ASP.NET application that will use session state in out-of-proc mode. You add the following code. Public Class Person Public Property FirstName As String Public Property LastName As String End Class
You need to add an attribute to the Person class to ensure that you can save an instance to session state.
Which attribute should you use?

A.    Bindable
B.    Serializable
C.    DataContract

Answer: B

QUESTION 118
You need to dynamically add TestUserControl.ascx to TestPage.aspx.
Which code segment should you use?

A.    Protected Sub Page_Load(ByVal sender As Object,
ByVal e As System.EventArgs) Handles Me.Load
Dim userControl As Control =
Page.LoadControl("TestUserControl.ascx")
Page.Form.Controls.Add(userControl)
End Sub
B.    Protected Sub Page_Load(ByVal sender As Object,
ByVal e As System.EventArgs) Handles Me.Load
Dim userControl As Control =
Page.FindControl("TestUserControl.ascx")
Page.Form.Controls.Add(userControl)
End Sub
C.    Private Sub TestPage_Init(ByVal sender As Object,
ByVal e As System.EventArgs) Handles Me.Init
Dim userControl As Control =
Page.LoadControl("TestUserControl.ascx")
Page.Form.Controls.Add(userControl)
End Sub
D.    Private Sub TestPage_PreInit(ByVal sender As Object,
ByVal e As System.EventArgs) Handles Me.PreInit
Dim userControl As Control =
Page.FindControl
("TestUserControl.ascx"Page.Form.Controls.Add(userControl)
End Sub

Answer: A

QUESTION 119
You create a Web page named TestPage.aspx and a user control named TestUserControl.ascx. TestPage.aspx uses TestUserControl.ascx as shown in the following line of code.
<uc:TestUserControl ID="testControl" runat="server"/>
On TestUserControl.ascx, you need to add a read-only member named CityName to return the value "New York".
You also must add code to TestPage.aspx to read this value.
Which two actions should you perform? (Each correct answer presents part of the solution. Choose two.)

A.    Add the following line of code to the TestUserControl.ascx.vb code-behind file.
Public ReadOnly Property CityName As String
Get
Return "New York"
End Get
End Property
B.    Add the following line of code to the TestUserControl.ascx.vb code-behind file.
Protected ReadOnly CityName As String = "New York"
C.    Add the following code segment to the TestPage.aspx.vb code-behind file.
Protected Sub Page_Load(ByVal sender As Object,
ByVal e As System.EventArgs) Handles Me.Load
Dim s As String = testControl.CityName
End Sub
D.    Add the following code segment to the TestPage.aspx.vb code-behind file.
Protected Sub Page_Load(ByVal sender As Object,
ByVal e As System.EventArgs) Handles Me.Load
Dim s As String = testControl.Attributes("CityName")
End Sub

Answer: AC

QUESTION 120
You use the following declaration to add a Web user control named TestUserControl.ascx to an ASP.NET page named TestPage.aspx.
<uc:TestUserControl ID="testControl" runat="server"/>
You add the following code to the code-behind file of TestPage.aspx.
Private Sub TestMethod()
...
End Sub
You define the following delegate.
Public Delegate Sub MyEventHandler()
You need to add an event of type MyEventHandler named MyEvent to TestUserControl.ascx and attach the page's TestMethod method to the event.
Which two actions should you perform? (Each correct answer presents part of the solution. Choose two.)

A.    Add the following line of code to TestUserControl.ascx.vb.
Public Event MyEvent As MyEventHandler
B.    Add the following line of code to TestUserControl.ascx.vb.
Public MyEvent As MyEventHandler
C.    Replace the TestUserControl.ascx reference in TestPage.aspx with the following declaration.
<uc:TestUserControl ID="testControl" runat="server"
OnMyEvent="TestMethod"/>
D.    Replace the TestUserControl.ascx reference in TestPage.aspx with the following declaration.
<uc:TestUserControl ID="testControl" runat="server"
MyEvent="TestMethod"/>

Answer: AC


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