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 developing a server. You are developing a method to hash data with the Secure Hash Algorithm. The data is passed to your method as a byte array named message. You have to use SHA1 to compute the hash of the incoming parameter. Besides this, you have to place the result into a byte array named hash. In the options below, which code segment should you use?

• A. Dim objSHA As New SHA1CryptoServiceProviderDim hash() As Byte = NothingobjSHTransformBlock(message, 0, message.Length, hash, 0)
• B. Dim objSHA As New SHA1CryptoServiceProviderDim hash() As Byte = BitConverter.GetBytes(objSHA.GetHashCode)
• C. Dim objSHA As New SHA1CryptoServiceProviderobjSHA.GetHashCode()Dim hash() As Byte = objSHA.Hash
• D. Dim objSHA As New SHA1CryptoServiceProviderDim hash() As Byte = objSHA.ComputeHash(message)

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 writing code for user authentication and authorization. The username, password, and roles are stored in your application data store.
You have to build a user security context that will be used for authorization checks such as IsInRole. The security context will be used for authorization checks such as IsInRole. You authorize the user by writing the code segment below:
If TestPassword(UserName, Password) = False Then Throw New Exception("Could not authenticate user")
End If
Dim RolesArray() As String = LookUpUserRoles(UserName)
In order to establish the user security, you have to complete the code segment. In the options below, which code segment should you use?

• A. Dim objID As New WindowsIdentity(UserName)Dim objUser As New WindowsPrincipal(objID)Thread.CurrentPrincipal = objUser
• B. Dim objToken As IntPtr = IntPtr.ZeroobjToken = LogonUserUsingInterop(UserName, EncryptedPassword)Dim objContext As WindowsImpersonationContext = _WindowsIdentity.Impersonate(objToken)
• C. Dim objNT As New NTAccount(UserName)Dim objID As New GenericIdentity(objNT.Value)Dim objUser As New GenericPrincipal(objID, RolesArray)Thread.CurrentPrincipal = objUser
• D. Dim objID As New GenericIdentity(UserName)Dim objUser As New GenericPrincipal(objID, RolesArray)Thread.CurrentPrincipal = objUser

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. <OnDeserializing> _ Friend Sub UpdateValue(ByVal info As SerializationInfo) info.AddValue("currentRate", GetCurrentRate())End Sub
• C. <OnSerializing> _Friend Sub UpdateValue (ByVal context As StreamingContext) currRate = GetCurrentRate()End Sub
• D. <OnDeserialized> _Friend Sub UpdateValue (ByVal context As StreamingContext) currRate = 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 create a Web site. The Web site contains many predefined roles and associated users that will be used for security purposes. You have to manage these roles and user accounts. In the options below, which tool should you use?

• A. You should use the ASP.NET IIS Registration tool
• B. You should use the Microsoft .NET Framework Configuration tool
• C. You should use the Code Access Security Policy tool
• D. You should use the Web Site Administration Tool

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 create a Web Form which calls a method as part of its processing. It takes a long time for the method to process. Besides this, you notice that the other Web Forms in the ASP.NET Web site are now processing slowly. You have to execute the long running method in parallel to other requests to reduce the page response times. So what should you do?

• A. You have to call the method within the PreInit and PreRenderComplete page events.
• B. You have to call the method by using the BeginGetAysncData and EndGetAsyncData delegates.
• C. You have to set the CompilationMode attribute to Always inside the page directive of the Web Form that calls the method.
• D. You have to set the Async attribute to True inside the page directive of the Web Form that calls the method.