Microsoft 070-515 : TS: Web Applications Development with Microsoft .NET Framework 4

You create a Web page that contains the following image element.
<img id="myImage" src="/image1.png" />
You need to write a JavaScript function that will dynamically change which image is displayed. Which code segment should you use?

• A. function changeImage() {
  getElementById("myImage").src = "image2.png";
  }
• B. function changeImage() {
  document.getElementById("myImage").src = "image2.png";
  }
• C. function changeImage() {
  window.getElementById("myImage").src = "image2.png";
  }
• D. function changeImage() {
  myImage.src = "image2.png";
  }

You create a new ASP.NET MVC 2 Web application.
The following default routes are created in the Global.asax.cs file. (Line numbers are included for reference
only.)
01 public static void RegisterRoutes(RouteCollection routes)
02 {
03 routes.IgnoreRoute("{resource}.axd/{*pathInfo}");
05 routes.MapRoute("Default", "{controller}/{action}/{id}", new {controller
= "Home", action = "Index", id = ""});
06 }
You implement a controller named HomeController that includes methods with the following signatures.
public ActionResult Index()
public ActionResult Details(int id)
public ActionResult DetailsByUsername(string username)
You need to add a route to meet the following requirements.
The details for a user must to be displayed when a user name is entered as the path by invoking the
DetailsByUsername action.
User names can contain alphanumeric characters and underscores, and can be between 3 and 20 characters long.
What should you do?

• A. Replace line 05 with the following code segment.
  routes.MapRoute("Default", "{controller}/{action}/{username}", new
  {controller = "Home", action = "DetailsByUsername", username = ""}, new
  {username = @"\w{3,20}"});
• B. At line 04, add the following code segment.
  routes.MapRoute("Details by Username", "{username}", new {controller =
  "Home", action = "DetailsByUsername"}, new {username = @"\w{3,20}"});
• C. At line 04, add the following code segment.
  routes.MapRoute("Details by Username", "{id}", new {controller = "Home",
  action = "DetailsByUsername"}, new {id = @"\w{3,20}"});
• D. Replace line 05 with the following code segment.
  routes.MapRoute("Default", "{controller}/{action}/{id}", new {controller =
  "Home", action = "DetailsByUsername", id = ""});

You are implementing an ASP.NET application that uses data-bound GridView controls in multiple pages. You add JavaScript code to periodically update specific types of data items in these GridView controls. You need to ensure that the JavaScript code can locate the HTML elements created for each row in these GridView controls, without needing to be changed if the controls are moved from one page to another. What should you do?

• A. Set the @ OutputCache directive's VaryByControl attribute to the ID of the GridView control.
• B. Set the ClientIDMode attribute to Predictable in the web.config file.
• C. Set the ClientIDRowSuffix attribute of each unique GridView control to a different value.
• D. Replace the GridView control with a ListView control.

You are developing an ASP.NET Web page. You add the following markup to the page.
<asp:FileUpload id="FileUpload1" runat="server" />
<asp:Button id="btnUpload" Text="Upload selected file"
OnClick="btnUpload_Click" runat="server" />
<asp:Label id="lblFeedback" runat="server" />
You add the following code segment to the code-behind. (Line numbers are included for reference only.)
01 protected void btnUpload_Click(object sender, EventArgs e)
02 {
03 if (...)
04 {
05 string saveName = Path.Combine(@"c:\uploadedfiles\",
FileUpload1.FileName);
06
07 lblFeedback.Text = "File successfully uploaded.";
08 }
09 else
10 {
11 lblFeedback.Text = "File upload failed.";
12 }
13 }
You need to save the uploaded file and display a message to the user that indicates that the upload either
succeeded or failed.
Which two actions should you perform? (Each correct answer presents part of the solution. Choose two.)

• A. Insert the following code segment at line 6.
  FileUpload1.FileContent.CopyTo(new FileStream(saveName, FileMode.Open);
• B. Replace line 3 with the following code segment.
  if (FileUpload1.HasFile)
• C. Replace line 3 with the following code segment.
  if (FileUpload1.FileContent.Length > 0)
• D. Insert the following code segment at line 6.
  FileUpload1.SaveAs(saveName);

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.
public partial class CustomMaster : MasterPage
{ public string Region { get; set; }
protected void Page_Load(object sender, EventArgs e)
{
}
}
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.
  CustomMaster custom = this.Master as CustomMaster;
  lblRegion.Text = custom.Region;
• B. Add the following code segment to the Page_Load method of the Custom.Master.cs code-behind file.
  Label lblRegion = Page.FindControl("lblRegion") as Label;
  lblRegion.Text = this.Region;
• C. Add the following code segment to the Page_Load method of the page code-behind file.
  CustomMaster custom = this.Parent as CustomMaster;
  lblRegion.Text = custom.Region;
• D. Add the following code segment to the Page_Load method of the Custom.Master.cs code-behind file.
  Label lblRegion = Master.FindControl("lblRegion") as Label;
  lblRegion.Text = this.Region;