Async/Await Under Questioning

1. What is the primary function of the `await` keyword in C#?

It blocks the current thread until the task completes It registers a continuation on a Task and returns the thread to the pool. It creates a new thread to run the task asynchronously It increases the execution speed of synchronous methods.

2. What can result from calling `GetDataAsync().Result` in a legacy application?

Increased thread efficiency Improved scalability SynchronizationContext deadlock Default cancellation behavior

3. Why is `async void` only appropriate for event handlers?

It can be awaited like async tasks Exceptions propagate to the context and can crash the process It creates a new thread for execution It is the only way to create asynchronous methods in C#.

4. How should independent asynchronous calls be executed to improve efficiency?

Await each call sequentially Use `Task.WhenAll` to start and await all at once Call them but don't await any Use `Parallel.ForEach` on tasks.

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