Questions

1. In a multi-threaded environment, which of the following data structures should you use to protect data from getting overwritten/corrupted?

   a. async-await.

   b. Tasks.

   c. Synchronization constructs such as locks.

   d. Data never gets corrupted.

2. If you have a WPF application that retrieves data from a REST API, which of the following should you implement for better responsiveness?

   a. Concurrent collection

   b. Parallel.For

   c. async-await for the REST API calls

3. Which of the following should be passed to cancel a task?

   a. CancellationToken

   b. ConcurrentDictionary

   c. SemaphoreSlim

4. Which of the following is the recommended return type for an asynchronous method that uses async-await and does not return anything?

   a. async void

   b. async Task

   c. async book

   d. async Task<bool>