Latest P4s, Testking Or Actual Dumps 70-431

Tuesday, March 25, 2008, 3:51
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QUESTION 1
You are creating a Web application for la Zellé Computers Inc. Customers are to customize their PC
using drop-down list boxes. When a value in any of these drop-down list boxes is changed, server-side
code is invoked that validates the status of the value on the page. If several changes to these list boxes are

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made, then invoking the validation process as each change is made requires a great deal of time. You
want to be able to make several changes, then click a button to run the server-side validation code.
Which of the following actions should you take to quickly disable the server-side validation that occurs
when a value in a drop-down list box is changed? (Select the best choice.)
A. Remove the SelectedIndexChanged event handlers from the DropDownList boxes.
B. Set the AutoPostBack property of the DropDownList boxes to False.
C. Set the EnableSessionState property of the Document object to False.
D. Add a client-side script that inhibits the server-side code.
Answer: B
You should set the AutoPostBack property of the DropDownList boxes to False. The
AutoPostBack property dictates whether a control’s events are processed immediately by the Web server or
deferred until another control, such as a command button, causes a postback to occur. Setting the AutoPostBack
property to False will cause the processing of all events to be deferred until the designated submission button is
clicked.
None of the other choices will prevent the list boxes from posting to the server. Client-side script cannot prevent
the list boxes from posting when the AutoPostBack property of the list boxes is True. The EnableSessionState
property of the Document object determines whether the page will maintain session state. Removing the
SelectedIndexChanged event handlers would remove the validation code from behind each control and,
therefore, is not an acceptable solution.
QUESTION 2
You have created an ASP.NET application that runs on your client’s Web server. The web application
allows its users to select online magazine subscriptions. One of the pages contains an HTML server
CheckBox control that, when checked, displays a list of products in a ListBox control. You have set the
AutoPostBack property of the check box to true so that the list box will immediately fill with data when
the check box is clicked. Most users report that the application runs properly, but some users report that
clicking the check box does not fill the list box with products.
Which of the following scenarios would result in the list box not updating when the check box is clicked
on some users’ browsers? (Select the best choice.)
A. Cookies have been disabled on some users’ browsers.
B. ActiveX control support has been disabled on some users’ browsers.
C. HTML version 4.0 or later is not supported by some users’ browsers.
D. Scripting has been disabled on some users’ browsers.
Answer: D
ASP.NET applications rely on JavaScript to call server-side events. When scripting is disabled in a browser, an
ASP.NET application will be unable to call any server-side event code. Because scripting has been disabled on
some users’ browsers in this scenario, the code to update the list box is never called. When a control’s
AutoPostBack property is set to true, a form post will occur when the control’s Change event is raised. Change
events do not normally cause a post to occur. Scripting must be enabled in browsers for the AutoPostBack
property to function.

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QUESTION 3
Your company has created an ASP.NET application. The application contains several buttons that help
users navigate through the application. Everyone in your company uses Microsoft Internet Explorer
version 5 or later.
Currently, focus moves to the first button on the form after any submit button is clicked. Many users
would like focus to remain on the same button when it is clicked. Users would also like the scroll position
to stay the same as they navigate between pages. For example, if a user has scrolled to the bottom of the
page, then the user would like to continue to view the data at the bottom of the page after a postback.
Which action should you take to implement these two suggestions? (Select the best choice.)
A. Set the AutoEventWireup attribute of the @ Page directive to true.
B. Store the name of the button with focus and the page position in a Session object.
C. Store the name of the button with focus and the page position in a hidden field.
D. Set the SmartNavigation attribute of the @ Page directive to true.
Answer: D
You should set the SmartNavigation attribute of the @ Page directive to true in order to retain focus on the
clicked button and retain the scroll positions. SmartNavigation is only available for Internet Explorer 5 or later.
Enabling the SmartNavigation feature implements the suggestions offered by the application’s users and also
eliminates flickering between pages.
The AutoEventWireup attribute, if set to true, causes Page events to automatically raise without explicitly
coding event handlers. Visual Studio .NET will automatically create the code that will bind events when
AutoEventWireup is true. Storing the button name and page position would not satisfy the scenario.
QUESTION 169:
You have developed a Web control for Akepture Inc. that uses a custom class named
CustomHTTPMessages. The
CustomHTTPMessages class defines several custom message properties, including Error404Message,
that are delivered to the users when various conditions are met within the Web control. An instance of
CustomHTTPMessages is exposed as a property of the control named Messages. You want to set the
Error404Message property of the Messages object to “Oh no! It’s one of those day again. Click here to
search our website.”
Which HTML code segment will set the property correctly? (Select the best choice.)
A. "Oh no! It's one of those day again. Click here to search our
website."
... / >
B. "Oh no! It's one of those day again. Click here to search our
website."
... / >
C. "Oh no! It's one of those day again. Click here to search our

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website."
... / >
D. "Oh no! It's one of those day again. Click here to search our
website."
... / >
Answer: A
Properties of a public class that is contained in a control are referred to as
subproperties. ASP.NET uses hyphenated syntax, such as object-property to access subproperties. In this
scenario, you should use the syntax Messages-Error404Message to set the property.

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