Defines what happens when several operations fail, cancellation arrives, or only part of a parallel batch completes, without orphaning work or hiding errors.

.NETASP.NET CoreC#

Practice drill

Concept questionMedium~7 min

How Task.WhenAll handles exceptions

Explain how Task.WhenAll behaves when one or more tasks fail and how to inspect failures safely.

.NETASP.NET CoreC#

Practice drill

Comparison questionMedium~7 min

IEnumerable vs IAsyncEnumerable for streaming

Compare synchronous enumeration with async streaming and explain when IAsyncEnumerable helps with large or delayed data.

.NETASP.NET CoreC#

Practice drill

Comparison questionMedium~7 min

Parallel.ForEachAsync vs Task.WhenAll

Compare Parallel.ForEachAsync and Task.WhenAll for processing collections with async work and controlled concurrency.

.NETASP.NET CoreC#

Practice drill

Comparison questionMedium~7 min

Task.Run vs async/await

Explain when Task.Run is useful, when async/await is enough, and why Task.Run is usually wrong for I/O in ASP.NET Core.

.NETASP.NET CoreC#

Practice drill

Comparison questionMedium~7 min

Task vs Thread in .NET

Compare Task and Thread in .NET, including abstraction level, scheduling, and when direct thread management is rarely appropriate.

.NETASP.NET CoreC#

Practice drill

Concept questionMedium~7 min

Using Task.WhenAll for independent I/O

Use Task.WhenAll to run independent asynchronous I/O operations concurrently while handling exceptions, cancellation, and dependency limits.

.NETASP.NET CoreC#

Practice drill

Concept questionMedium~7 min

What happens when an async method awaits?

Explain the async state machine, continuation scheduling, and exception flow when a C# method awaits a Task.

.NETASP.NET CoreC#

Practice drill