You have just graduated from college, now you are serving the internship as the software
developer in an international company. There's an SQL query that takes one minute to execute. You execute the SQL query asynchronously by using the following code:
Dim ar As IAsyncResult = cmd.BeginExecuteReader()
When you're executing the SQL query is executing, you have to execute a method named DoWork(). It takes one second for the method to execute. When the SQL query is executing, DoWork() must run as many times as possible.
In the options below, which code segment should you use?

• A. While Not ar.AsyncWaitHandle.WaitOne() DoWork()End Whiledr = cmd.EndExecuteReader(ar)
• B. While Not ar.IsCompleted DoWork()End Whiledr = cmd.EndExecuteReader(ar)
• C. While ar.AsyncWaitHandle Is Nothing DoWork()End Whiledr = cmd.EndExecuteReader(ar)
• D. While Thread.CurrentThread.ThreadState = ThreadState.Running DoWork()End Whiledr = cmd.EndExecuteReader(ar)

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??re creating a Web application which displays data by using a GridView control. For the Web application, you drag and drop tables from the Data Connections tree in Server Explorer build Web Forms.
The following is the Add Connection dialog box. (Click the Exhibit button.) You have to use this to add a connection to your data. You have to create the data source objects, so you need to configure the .NET Data Provider that you use to achieve this.
What should you do?

• A. You should click the Advanced button, and change the Data Source property to the target provider.
• B. You should click the Advanced button, and change the Application Name property to the target provider.
• C. You should right-click the connection, and click Properties. Modify the Provider property of the data connection.
• D. You should click the Change button, and change the data provider for the selected data source.

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:WebPartZone ID="WebPartZone1" Runat="server"> <ZoneTemplate> </ZoneTemplate></asp:WebPartZone>
• D. <asp:ConnectionsZone ID="ConnectionsZone1" Runat="server"> <ConnectVerb Enabled="true" /></asp:ConnectionsZone>

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 class which contains a method named GetCurrentRate. The GetCurrentRate method retrieves the current interest rate and a variable named currRate that stores the current interest rate. You write serialized representations of the class. You have to write a code segment, when an instance of the class is deserialized, the segment updates the currRate variable with the current interest rate. So what code segment should you write?

• A. <OnSerializing> _ Friend Sub UpdateValue(ByVal info As SerializationInfo) info.AddValue("currentRate", GetCurrentRate())End Sub
• B. <OnDeserialized> _Friend Sub UpdateValue (ByVal context As StreamingContext) currRate = GetCurrentRate()End Sub
• C. <OnSerializing> _Friend Sub UpdateValue (ByVal context As StreamingContext) currRate = GetCurrentRate()End Sub
• D. <OnDeserializing> _ Friend Sub UpdateValue(ByVal info As SerializationInfo) info.AddValue("currentRate", GetCurrentRate())End Sub

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 are developing a server application. The application will transmit sensitive information on a network. An X509Certificate object named certificate and a TcpClient object named client have been created. Now you have to create an SslStream to communicate by using the Transport Layer Security 1.0 protocol. In the options below, which code segment should you use?

• A. SslStream ssl = new SslStream(client.GetStream());ssl.AuthenticateAsServer( certificate, false, SslProtocols.None, true);
• B. SslStream ssl = new SslStream(client.GetStream());ssl.AuthenticateAsServer( certificate, false, SslProtocols.Ssl2, true);
• C. SslStream ssl = new SslStream(client.GetStream());ssl.AuthenticateAsServer( certificate, false, SslProtocols.Ssl3, true);
• D. SslStream ssl = new SslStream(client.GetStream()); ssl.AuthenticateAsServer( certificate, false, SslProtocols.Tls, true);