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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. A large, n-tier Web application that has a custom event tracking system has been created by you. You have to create a custom event type. The custom event type enables your event tracking system to record all relevant event details for all types of events. The events must be stored in Microsoft SQL Server. From which base type should your custom event type inherit?

• A. Your custom event type should inherit from WebBaseEvent
• B. Your custom event type should inherit from IWebEventCustomEvaluator
• C. Your custom event type should inherit from WebEventProvider
• D. Your custom event type should inherit from WebAuditEvent

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 a custom dictionary. The custom-dictionary class is named MyDictionary. Now you must make sure that the dictionary is type safe. So what code segment should you write?

• A. Class MyDictionary Implements IDictionary
• B. Class MyDictionaryImplements Dictionary(Of String, String)
• C. Class MyDictionary ... End Class Dim t As New Dictionary(Of String, String)Dim dict As MyDictionary = CType(t, MyDictionary)
• D. Class MyDictionary Inherits HashTable

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 an application. Users who are not members of the Administrator group are not allowed to run the application. You protect sensitive data within the application by writing the security code below:
Dim blnAdmin As Boolean = False
Dim objRole As WindowsBuiltInRole = _
WindowsBuiltInRole.Administrator
If blnAdmin = False Then
Throw New Exception("User not permitted")
End If
Now if a user is not a member of the Administrator group, the application must throw an exception. You must add a code segment to this security code to ensure this.
In the options below, which code segment should you use?
objGroup.Value.Equals(objRole)Next

• A. Dim objUser As GenericPrincipal = _DirectCast(Thread.CurrentPrincipal, GenericPrincipal)blnAdmin = objUser.IsInRole(objRole.ToString)
• B. Dim objUSer As WindowsIdentity = _DirectCast(Thread.CurrentPrincipal.Identity, WindowsIdentity)blnAdmin = objUSer.Name.EndsWith("Administrator")
• C. Dim objUser As WindowsPrincipal = _DirectCast(Thread.CurrentPrincipal, WindowsPrincipal)blnAdmin = objUser.IsInRole(objRole)
• D. Dim objUser As WindowsIdentity = WindowsIdentity.GetCurrentFor Each objGroup As IdentityReference In objUser.GroupsDim objAccount As NTAccount = _ DirectCast(objGroup.Translate( _ Type.GetType("NTAccount")), NTAccount)blnAdmin =

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. There's an SQL query that takes one minute to execute. You execute the SQL query asynchronously by using the following code:
IAsyncResult ar = 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 (Thread.CurrentThread.ThreadState == ThreadState.Running) { DoWork();}dr = cmd.EndExecuteReader(ar);
• B. while (!ar.AsyncWaitHandle.WaitOne()) { DoWork();}dr = cmd.EndExecuteReader(ar);
• C. while (ar.AsyncWaitHandle == null) { DoWork();}dr = cmd.EndExecuteReader(ar);
• D. while (!ar.IsCompleted) { DoWork();}dr = 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 are creating a method to call a COM component. You have to explicitly request the runtime to perform a full stack walk by using declarative security. You must make sure that before the callers execute your method, all callers have the required level of trust for COM interop. So on the method, which attribute should you place?

• A. <SecurityPermission( _ SecurityAction.Assert, _ Flags:=SecurityPermissionFlag.UnmanagedCode) _>
• B. <SecurityPermission( _ SecurityAction.LinkDemand, _ Flags:=SecurityPermissionFlag.UnmanagedCode) _>
• C. <SecurityPermission( _ SecurityAction.Demand, _ Flags:=SecurityPermissionFlag.UnmanagedCode) _>
• D. <SecurityPermission( _ SecurityAction.Deny, _ Flags:=SecurityPermissionFlag.UnmanagedCode) _>