You have just graduated from college, now you are serving the internship as the software developer in an international company. A class library has been created. The class library contains the class hierarchy defined in the following code segment. (Line numbers are used for reference only.)
1 Public Class Group 2 Public Employees As Employee() 3 End Class 4 5 Public Class Employee 6 Public Name As String 7 End Class 8 9 Public Class Manager 10 Inherits Employee 11 Public Level As Integer 12 End Class You create an instance of the Group class.
You populate the fields of the instance. You receive error message and InvalidOperationException when you try to use the Serialize method of the XmlSerializer class to serialize the instance the Group class. The error message is: "There was an error generating the XML document."
In order to serialize instances successfully, you have to modify the code segment. Besides this, you must make sure that the XML output contains an element for all public fields in the class hierarchy.
So what should you do?

• A. Between lines 1 and 2 of the code segment insert the code below: <XmlArray(ElementName:="Employees")> _
• B. Between lines 1 and 2 of the code segment insert the code below: <XmlArrayItem(Type:=GetType(Employee))> _ <XmlArrayItem(Type:=GetType(Manager))> _
• C. Between lines 1 and 2 of the code segment, insert the code below: <XmlElement(Type:=GetType(Employee))> _
• D. Between lines 5 and 6 of the code segment, insert the code below: <XmlElement(Type:=GetType(Employee))> andInsert the following code between lines 10 and 11 of the code segment: <XmlElement(Type:=GetType(Manager))>

You work as the developer in an IT company. Recently your company has business with a big client. Now the client needs an undo buffer which stores data modifications. Your company asks you to create an undo buffer for the undo. The undo functionality must undo the most recent data modifications first. Besides this, the undo buffer only allows the storage of strings. You must ensure this two. In the options below, which code segment should you use?

• A. Queue<string> undoBuffer = new Queue<string>();
• B. Queue undoBuffer = new Queue();
• C. Stack<string> undoBuffer = new Stack<string>();
• D. Stack undoBuffer = new Stack();

You have just graduated from college, now you are serving the internship as the software developer in an international company. According to the requirements of the company CIO, you are creating a custom-collection class. A method needs to be created in your class. You must make sure that the method you create returns a type. And the type should be compatible with the Foreach statement. Which criterion should the method meet?

• A. The method must return a type of either IEnumerator or IEnumerable.
• B. The method must return a type of IComparable.
• C. The method must explicitly contain a collection.
• D. The method must be the only iterator in the class.

You work as the developer in an IT company. Recently your company has a big customer. The customer is a large international compay. You're appointed to provide technical support for the customer. Now according to the customer requirement, you create a Web application for the company's intranet. The company wants to enable users to customize their versions of the intranet home page. You create sections of content as Web Parts. You need to ensure that users can customize content at any time. In the options below, which code segment should you use?( choose more than one)

• A. <asp:CatalogZone ID="CatalogZone1" Runat="server"> <ZoneTemplate> <asp:PageCatalogPart Runat="server" ID="PageCatalogPart1" /> </ZoneTemplate></asp:CatalogZone>
• B. <asp:ProxyWebPartManager ID="ProxyWebPartmanager1" Runat="server" />
• C. <asp:ConnectionsZone ID="ConnectionsZone1" Runat="server"> <ConnectVerb Enabled="true" /></asp:ConnectionsZone>
• D. <asp:WebPartZone ID="WebPartZone1" Runat="server"> <ZoneTemplate> </ZoneTemplate></asp:WebPartZone>

You work as the developer in an IT company. Recently your company has a big customer. The customer runs a large supermarket chain. You're appointed to provide technical support for the customer. Now according to the customer requirement, you create a Web Form to which you add the following CreateUserWizard server control.
<asp:CreateUserWizard runat="server" ID="CU1" FinishCompleteButtonText="Continue">
<WizardSteps>
<asp:CreateUserWizardStep ID="CWS1" Runat="server" Title="New Account"/>
<asp:WizardStep ID="CWS2" Title="More Info" StepType="Step">
Given Name:<asp:TextBox runat="server" ID="txtGivenName" />
Last Surname:<asp:TextBox runat="server" ID="txtSurname" />
</asp:WizardStep>
<asp:CompleteWizardStep ID="CWS3" Runat="server" Title="Complete"/>
</WizardSteps> </asp:CreateUserWizard>
Now you have to write the segment code. After users click the Continue button on the last page, the code should redirect users to the first page of the wizard. In the options below, which code segment should you use?

• A. void CU1_ContinueButtonClick(object sender, EventArgs e) { CU1.ActiveStepIndex = 1;}
• B. void CU1_FinishButtonClick(object sender, WizardNavigationEventArgs e) { CU1.ActiveStepIndex = 1;}
• C. void CU1_ContinueButtonClick(object sender, EventArgs e) { CU1.ActiveStepIndex = 0;}
• D. void CU1_NextButtonClick(object sender, WizardNavigationEventArgs e) { CU1.ActiveStepIndex = 0;}