When experiencing timeout issues, which exception can be expected?

The correct choice is related to the types of exceptions that may be encountered when a timeout occurs during data operations. In scenarios where a timeout happens—such as while trying to communicate with a server, accessing a database, or waiting on a resource—the type of exception that is commonly thrown is IOException.

IOException is a general class for exceptions that occur during input and output operations, which can include network issues, file handling, or any timeout situations where an operation does not complete in the expected time frame. In the context of timeout issues, IOException can indicate that the intended operation could not be completed due to a lack of response or delay from external resources.

While other types of exceptions like NetworkException, ServiceException, and TimeoutException may seem relevant, they represent more specific or different categories of errors. NetworkException is typically associated with issues that arise specifically from the network layer, ServiceException relates to errors when interfacing with services, and TimeoutException, while it directly suggests a timeout, isn't universally used in all systems and could be more context-specific. Therefore, IOException serves as the most appropriate and generalized type of exception that you can expect when dealing with timeout issues.