Microsoft Certified Solutions Developer (MCSD) Certification Practice Test

How can you wait for all Finalizers to finish executing?

1. GC.WaitForFinalizers();

2. GC.WaitForAllPendingFinalizers();

3. GC.ExecuteFinalizers();

4. GC.FinishPendingFinalizers();

The correct answer is: GC.WaitForAllPendingFinalizers();

The reason "GC.WaitForAllPendingFinalizers();" is the correct choice lies in its specific functionality in managing finalizers in the .NET garbage collection process. This method is used to instruct the garbage collector to block the calling thread until all finalizers have been executed and all objects eligible for finalization have been properly cleaned up. Finalizers can play a crucial role in resource management, especially for unmanaged resources like file handles or database connections. When an object with a finalizer is no longer accessible in your application, the garbage collector will eventually finalize it, meaning it will execute the finalizer code defined in that object. However, there may be situations where you need to ensure that all such cleanup tasks are completed before proceeding, which is where this method comes into play. In contrast, the other options either do not exist or do not perform the specific action of waiting for all pending finalizers. For instance, "GC.WaitForFinalizers();" is a method that waits for the finalizers to finish, but it is less specific compared to the one that ensures all pending finalizers are completed before the code continues execution. The other options, such as "GC.ExecuteFinalizers();" and "GC.FinishPendingFinalizers();" do not even exist in