Home > Articles > Certification > Microsoft Certification

This chapter is from the book

Exam Prep Questions

Question 1

You are designing a new page for your ASP.NET Web Application from scratch. The page will display statistical information in a series of tables and text fields, but will not require any user input. The page will carry out complex calculations to determine the validity of the information that it displays. Which controls should you use to build the user interface for this page?

  1. HTML controls

  2. HTML server controls

  3. Web server controls

  4. Validation controls

Answer C is correct. Web server controls are designed for easy programmability on ASP.NET pages. Answer A is incorrect because you can't use code-behind to easily specify the values to display in HTML controls. Answer B is incorrect because HTML server controls are mainly used to upgrade existing ASP pages, not to create new pages. Answer D is incorrect because validation controls are only useful when there is user input to validate.

Question 2

You have developed an ASP.NET Web Form that allows users to select from a list of replacement parts to order. The Web Form uses the following code to load the list into a control:

Private Sub Page_Load(ByVal sender As System.Object, _
 ByVal e As System.EventArgs) Handles MyBase.Load
  lbParts.Items.Add("Flange")
  lbParts.Items.Add("Motor")
  lbParts.Items.Add("Bracket")
End Sub

As users select parts, you execute code on the Web server to move the selected parts to a second list. Users report that the page initially displays correctly, but after they select one part, the original list reads as follows:

Flange
Motor
Bracket
Flange
Motor
Bracket

How should you modify the code to prevent this from happening?

  1. Private Sub Page_Load(ByVal sender As System.Object, _
     ByVal e As System.EventArgs) Handles MyBase.Load
      If lbParts.Items.Count < 3 Then
        lbParts.Items.Add("Flange")
        lbParts.Items.Add("Motor")
        lbParts.Items.Add("Bracket")
      End If
    End Sub
  2. Private Sub Page_Load(ByVal sender As System.Object, _
     ByVal e As System.EventArgs) Handles MyBase.Load
      If Not IsPostBack Then
        lbParts.Items.Add("Flange")
        lbParts.Items.Add("Motor")
        lbParts.Items.Add("Bracket")
      End If
    End Sub
  3. Private Sub Page_Load(ByVal sender As System.Object, _
     ByVal e As System.EventArgs) Handles MyBase.Load
      If IsPostBack Then
        lbParts.Items.Add("Flange")
        lbParts.Items.Add("Motor")
        lbParts.Items.Add("Bracket")
      End If
    End Sub
  4. Private Sub Page_Load(ByVal sender As System.Object, _
     ByVal e As System.EventArgs) Handles MyBase.Load
      lbParts.Items.Clear
      lbParts.Items.Add("Flange")
      lbParts.Items.Add("Motor")
      lbParts.Items.Add("Bracket")
    End Sub

Answer B is correct. You can use the IsPostBack property to tell whether the page is being loaded for the first time and then only perform initializations on the first load. Answers A and D are incorrect because they will reinitialize the ListBox every time that the page is loaded, slowing down the page rendering. Answer C is incorrect because the postback test should be looking for False, not True.

Question 3

You have designed a Web Form that includes a Panel control named Panel1. Under some circumstances, you want to dynamically display a TextBox control on this Panel control. Your form includes the following code:

Dim txtNew As TextBox = New TextBox
txtNew.ID = "txtNew"
txtNew.Text = "Dynamic TextBox"

When you run the code, the form does not display the new TextBox. You single-step through the code and verify that these lines are being executed. How should you fix this problem?

  1. Dim txtNew As TextBox = New TextBox
    txtNew.ID = "txtNew"
    txtNew.Text = "Dynamic TextBox"
    txtNew.Enabled = True
  2. Dim txtNew As TextBox = New TextBox
    txtNew.ID = "txtNew"
    txtNew.Text = "Dynamic TextBox"
    txtNew.Visible = True
  3. Dim txtNew As TextBox = New TextBox
    txtNew.ID = "txtNew"
    txtNew.Text = "Dynamic TextBox"
    Panel1.Controls.Add("txtNew")
  4. Dim txtNew As TextBox = New TextBox
    txtNew.ID = "txtNew"
    txtNew.Text = "Dynamic TextBox"
    Panel1.Controls.Add(txtNew)

Answer D is correct. To show a dynamically created control on a Web Form, you must add the new control to the Controls collection of a container control such as a Panel. Answers A and B are incorrect because they alter the properties of the control without adding it to a container. Answer C is incorrect because the Add method requires an object reference, not a String with an object name.

Question 4

You are designing a Web page for your corporate intranet. All the users on the intranet are using either Internet Explorer 5.0 or Internet Explorer 6.0 as their browser. When an employee enters his employee number, you need to validate it as a legitimate employee number so that you can audit actions on the Web site. Which type of validation should you perform, if any?

  1. You should not validate this data.

  2. You should only perform client-side validation.

  3. You should only perform server-side validation.

  4. You should perform both client-side and server-side validation.

Answer D is correct. You should validate the data in this scenario because the correct data is critical to the application. You should use client-side validation because client-side validation is the fastest way to catch accidental errors in the data and can prevent bad data from reaching the server. However, you should also use server-side validation to eliminate the possibility of someone hand-crafting an HTTP request to bypass the client-side validation.

Question 5

You are designing a new home page for your company, using ASP.NET. The home page will have numerous graphics, including the company logo, images used for navigation, and pictures of your company's graphics. You want to make sure that users who cannot view graphics (for example, those browsing with a screen reader) receive a description of each image instead. Which property of the Image control should you set to provide this description?

  1. Attributes property

  2. ToolTip property

  3. AlternateText property

  4. ImageUrl property

Answer C is correct. The AlternateText property of an Image control supplies text that is used by screen readers and by other browsers when an image cannot be displayed. Answer A is incorrect because the Attributes property returns an array of attributes of the control. Answer B is incorrect because the ToolTip property only supplies text to be seen when the mouse is hovered over the control. Answer D is incorrect because the ImageUrl property tells the control which image to display.

Question 6

You are designing a Web Form that will allow the user to specify a date for a dental appointment. You want to allow the user to specify a date by choosing it from a calendar. The users of the application employ a wide variety of Web browsers, including Internet Explorer versions 3.2 through 6.0 and Netscape versions 4.79 through 7.0. How should you proceed to create this page with the least effort?

  1. Work directly in HTML view of your Web form. Design the calendar using HTML tags.

  2. Work in Design view of the Web form. Design the calendar by using the Table, TableRow, and TableCell Web server controls.

  3. Work in Design view of the Web form. Design the calendar by using a single Calendar control.

  4. Work in the code-behind file. Design the calendar by dynamically adding HTML controls to the Web Form at runtime.

Answer C is correct. ASP.NET will render complex controls such as the Calendar control properly for both uplevel and downlevel browsers by detecting the browser and sending the appropriate HTML markup. Answers A, B, and D are incorrect because they all require substantially more work than using a single Calendar control.

Question 7

Your company has an existing classic ASP application that is used to track news on your intranet. You have been tasked with upgrading the application to ASP.NET. As a first step, you want to keep the user interface the same, but move the business logic to code-behind files. How should you proceed?

  1. Continue to use HTML controls on ASP.NET Web Forms. In the code-behind files, rewrite all business logic using Visual Basic .NET.

  2. Use ASP.NET Web server controls instead of HTML controls. In the code-behind files, rewrite all business logic using Visual Basic .NET.

  3. Apply the runat="server" attribute to all HTML controls. In the code-behind files, rewrite all business logic using Visual Basic .NET.

  4. Continue to use HTML controls for labels and textboxes, but convert all button controls to Web server controls. In the code-behind files, rewrite all business logic using Visual Basic .NET.

Answer C is correct. Applying the runat="server" attribute is the only step required to make the controls on the page available to code in a code-behind file. Answers A and D are incorrect because you cannot use code-behind files to manipulate HTML controls. Answer B is incorrect because there is no built-in way to directly convert HTML controls to Web server controls.

Question 8

You are designing a Web Form that includes four RadioButton controls named rb1, rb2, rb3, and rb4. Users should be able to select either rb1 or rb2, and either rb3 or rb4. How should you configure the controls to achieve this?

  1. Place rb1 and rb2 on a Panel control named pnlA. Place rb3 and rb4 on a Panel control named pnlB.

  2. Set the GroupName property of rb1 and rb2 to "Group1". Set the GroupName property of rb3 and rb4 to "Group2".

  3. Set the Parent property of rb2 to rb1. Set the Parent property of rb4 to rb3.

  4. Set the AutoPostBack property of rb1 and rb3 to True. Set the AutoPostBack property of rb2 and rb4 to False.

Answer B is correct. RadioButton controls that share a GroupName are mutually exclusive. Answer A is incorrect because placing the controls on different panels organizes them visually, but does not put them in distinct groups. Answer C is incorrect because the Parent property is just a link to the form containing the controls. Answer D is incorrect because AutoPostBack indicates whether the Web Form should be posted when the control is clicked.

Question 9

You want to keep consistent formatting for all the Web Forms in your application. To achieve this, you have created a cascading style sheet named CompanyStyle.css and have linked it to all the Web pages. You have defined a style class named ButtonStyle in CompanyStyle.css to format buttons on the Web Forms. Which of the following property settings would you use with a Button Web server control to use the ButtonStyle style class?

  1. Style="ButtonStyle"

  2. Style=".ButtonStyle"

  3. CssClass="ButtonStyle"

  4. CssClass=".ButtonStyle"

Answer C is correct. The CssClass property specifies the CSS style class to apply to a particular control. Answers A and B are incorrect because the Style property is used to supply CSS attributes directly, rather than the name of a CSS style. Answers B and D are incorrect because styles are referred to without the leading dot, even though you must use the dot when defining them in a CSS file.

Question 10

You are designing a Web Form to collect user registration information for your corporate Web site. You want to ensure that users supply a value for the Age TextBox control and that the value supplied is between 18 and 105. Which validation control should you use (select all that apply)?

  1. RequiredFieldValidator

  2. RangeValidator

  3. RegularExpressionValidator

  4. CustomValidator

Answers A and B are correct. You can use the RequiredFieldValidator control to ensure that the user enters a value and the RangeValidator control to check that the value is in the correct range. Although you could use the RegularExpressionValidator or CustomValidator controls to check the range, doing so would require you to write a complex regular expression or custom business logic, so answers C and D are incorrect.

Question 11

Your Web Form displays a list of State names in a DropDownList control. As soon as the user selects a state, you want to update a Label control to display the appropriate sales tax rate. You have written custom logic to do so in the SelectedIndexChanged event handler for the control. What property should you set to ensure that this event is handled at the correct time?

  1. EnableViewState = True

  2. AutoPostBack = False

  3. EnableViewState = False

  4. AutoPostBack = True

Answer D is correct. By default, selection change events for list controls are not sent to the server until the Web Form is posted by some other means (for example, by the user clicking a Submit button). Setting the AutoPostBack property to True causes the postback to happen as soon as a new item is selected in the list. Answer B is incorrect because it uses the wrong AutoPostBack value. Answers A and C are incorrect because the EnableViewState property has no effect on the timing of postbacks.

Question 12

Your Web Form requires the user to enter an email address. Which control should you use to validate the contents of the TextBox containing the email address?

  1. RequiredFieldValidator

  2. RegularExpressionValidator

  3. RangeValidator

  4. CustomValidator

Answer B is correct. The RegularExpressionValidator control is suited to checking input that conforms to a particular pattern such as a date or an email address (and .NET has a built-in expression for email addresses). Answer A is incorrect because the RequiredFieldValidator ensures that data was entered, but does not check the contents of the data. Answer C is incorrect because the RangeValidator checks to see that data is between a pair of values. Answer D is incorrect because the CustomValidator requires you to write extra code to perform the same tasks that the RegularExpressionValidator has built in.

InformIT Promotional Mailings & Special Offers

I would like to receive exclusive offers and hear about products from InformIT and its family of brands. I can unsubscribe at any time.

Overview


Pearson Education, Inc., 221 River Street, Hoboken, New Jersey 07030, (Pearson) presents this site to provide information about products and services that can be purchased through this site.

This privacy notice provides an overview of our commitment to privacy and describes how we collect, protect, use and share personal information collected through this site. Please note that other Pearson websites and online products and services have their own separate privacy policies.

Collection and Use of Information


To conduct business and deliver products and services, Pearson collects and uses personal information in several ways in connection with this site, including:

Questions and Inquiries

For inquiries and questions, we collect the inquiry or question, together with name, contact details (email address, phone number and mailing address) and any other additional information voluntarily submitted to us through a Contact Us form or an email. We use this information to address the inquiry and respond to the question.

Online Store

For orders and purchases placed through our online store on this site, we collect order details, name, institution name and address (if applicable), email address, phone number, shipping and billing addresses, credit/debit card information, shipping options and any instructions. We use this information to complete transactions, fulfill orders, communicate with individuals placing orders or visiting the online store, and for related purposes.

Surveys

Pearson may offer opportunities to provide feedback or participate in surveys, including surveys evaluating Pearson products, services or sites. Participation is voluntary. Pearson collects information requested in the survey questions and uses the information to evaluate, support, maintain and improve products, services or sites, develop new products and services, conduct educational research and for other purposes specified in the survey.

Contests and Drawings

Occasionally, we may sponsor a contest or drawing. Participation is optional. Pearson collects name, contact information and other information specified on the entry form for the contest or drawing to conduct the contest or drawing. Pearson may collect additional personal information from the winners of a contest or drawing in order to award the prize and for tax reporting purposes, as required by law.

Newsletters

If you have elected to receive email newsletters or promotional mailings and special offers but want to unsubscribe, simply email information@informit.com.

Service Announcements

On rare occasions it is necessary to send out a strictly service related announcement. For instance, if our service is temporarily suspended for maintenance we might send users an email. Generally, users may not opt-out of these communications, though they can deactivate their account information. However, these communications are not promotional in nature.

Customer Service

We communicate with users on a regular basis to provide requested services and in regard to issues relating to their account we reply via email or phone in accordance with the users' wishes when a user submits their information through our Contact Us form.

Other Collection and Use of Information


Application and System Logs

Pearson automatically collects log data to help ensure the delivery, availability and security of this site. Log data may include technical information about how a user or visitor connected to this site, such as browser type, type of computer/device, operating system, internet service provider and IP address. We use this information for support purposes and to monitor the health of the site, identify problems, improve service, detect unauthorized access and fraudulent activity, prevent and respond to security incidents and appropriately scale computing resources.

Web Analytics

Pearson may use third party web trend analytical services, including Google Analytics, to collect visitor information, such as IP addresses, browser types, referring pages, pages visited and time spent on a particular site. While these analytical services collect and report information on an anonymous basis, they may use cookies to gather web trend information. The information gathered may enable Pearson (but not the third party web trend services) to link information with application and system log data. Pearson uses this information for system administration and to identify problems, improve service, detect unauthorized access and fraudulent activity, prevent and respond to security incidents, appropriately scale computing resources and otherwise support and deliver this site and its services.

Cookies and Related Technologies

This site uses cookies and similar technologies to personalize content, measure traffic patterns, control security, track use and access of information on this site, and provide interest-based messages and advertising. Users can manage and block the use of cookies through their browser. Disabling or blocking certain cookies may limit the functionality of this site.

Do Not Track

This site currently does not respond to Do Not Track signals.

Security


Pearson uses appropriate physical, administrative and technical security measures to protect personal information from unauthorized access, use and disclosure.

Children


This site is not directed to children under the age of 13.

Marketing


Pearson may send or direct marketing communications to users, provided that

  • Pearson will not use personal information collected or processed as a K-12 school service provider for the purpose of directed or targeted advertising.
  • Such marketing is consistent with applicable law and Pearson's legal obligations.
  • Pearson will not knowingly direct or send marketing communications to an individual who has expressed a preference not to receive marketing.
  • Where required by applicable law, express or implied consent to marketing exists and has not been withdrawn.

Pearson may provide personal information to a third party service provider on a restricted basis to provide marketing solely on behalf of Pearson or an affiliate or customer for whom Pearson is a service provider. Marketing preferences may be changed at any time.

Correcting/Updating Personal Information


If a user's personally identifiable information changes (such as your postal address or email address), we provide a way to correct or update that user's personal data provided to us. This can be done on the Account page. If a user no longer desires our service and desires to delete his or her account, please contact us at customer-service@informit.com and we will process the deletion of a user's account.

Choice/Opt-out


Users can always make an informed choice as to whether they should proceed with certain services offered by InformIT. If you choose to remove yourself from our mailing list(s) simply visit the following page and uncheck any communication you no longer want to receive: www.informit.com/u.aspx.

Sale of Personal Information


Pearson does not rent or sell personal information in exchange for any payment of money.

While Pearson does not sell personal information, as defined in Nevada law, Nevada residents may email a request for no sale of their personal information to NevadaDesignatedRequest@pearson.com.

Supplemental Privacy Statement for California Residents


California residents should read our Supplemental privacy statement for California residents in conjunction with this Privacy Notice. The Supplemental privacy statement for California residents explains Pearson's commitment to comply with California law and applies to personal information of California residents collected in connection with this site and the Services.

Sharing and Disclosure


Pearson may disclose personal information, as follows:

  • As required by law.
  • With the consent of the individual (or their parent, if the individual is a minor)
  • In response to a subpoena, court order or legal process, to the extent permitted or required by law
  • To protect the security and safety of individuals, data, assets and systems, consistent with applicable law
  • In connection the sale, joint venture or other transfer of some or all of its company or assets, subject to the provisions of this Privacy Notice
  • To investigate or address actual or suspected fraud or other illegal activities
  • To exercise its legal rights, including enforcement of the Terms of Use for this site or another contract
  • To affiliated Pearson companies and other companies and organizations who perform work for Pearson and are obligated to protect the privacy of personal information consistent with this Privacy Notice
  • To a school, organization, company or government agency, where Pearson collects or processes the personal information in a school setting or on behalf of such organization, company or government agency.

Links


This web site contains links to other sites. Please be aware that we are not responsible for the privacy practices of such other sites. We encourage our users to be aware when they leave our site and to read the privacy statements of each and every web site that collects Personal Information. This privacy statement applies solely to information collected by this web site.

Requests and Contact


Please contact us about this Privacy Notice or if you have any requests or questions relating to the privacy of your personal information.

Changes to this Privacy Notice


We may revise this Privacy Notice through an updated posting. We will identify the effective date of the revision in the posting. Often, updates are made to provide greater clarity or to comply with changes in regulatory requirements. If the updates involve material changes to the collection, protection, use or disclosure of Personal Information, Pearson will provide notice of the change through a conspicuous notice on this site or other appropriate way. Continued use of the site after the effective date of a posted revision evidences acceptance. Please contact us if you have questions or concerns about the Privacy Notice or any objection to any revisions.

Last Update: November 17, 2020