Question 72


1.6.1 Question

Multiple Choice

What is the technique in which the client sends a request to the server, and the server holds the response until it either times out or has information to send to the client is

  • A. HTTP polling
  • B. HTTP long polling
  • C. WebSockets
  • D. HTTP request-response

Answer:

B
Explanation
A. Incorrect: In HTTP polling, the client sends a request to the server, and as soon as the response is returned, it sends a new request.
B. Correct: In HTTP long polling, the client sends a request to the server, and the server holds it open until it either has something to return to the client or the conĀ­nection times out.
C. Incorrect: WebSockets are a way for two-way communication between the client and the server. The server does not hold onto the response.
D. Incorrect: The request-response path is a traditional HTTP connection.