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Question 46

Given the following code:

What should you do at line 1 to enable this servlet receive request data without blocking?

Use a Runnable instance with the start () method of AsyncContext.

Define a ReadListener and assign it to the request input stream.

Create a Callable class and delegate this operation to a ManagedExecutorService by using the dispatch method of AsyncContext.

Define an AsyncListener and assign it to the AsyncContext object.

Correct Answer: B

In order to enable the servlet to receive request data without blocking, you should define a ReadListener and assign it to the request input stream. This is because ReadListener allows you to handle incoming data as it becomes available without blocking, which is the primary mechanism for implementing non-blocking I/O in servlets.

Discussion

devmsalehOption: B

Answer is B

kozionovOption: B

Answer is B https://docs.oracle.com/javaee/7/tutorial/servlets013.htm#BEIHICDH

orjavaOption: B

Answer B. Nonblocking I/O 1- Put the request in asynchronous mode 2- Obtain an in/output stream from request/response objects. 3- Assign a read/write listener to the stream. 4- Process the request/response inside the listener's callback methods