When you communicate with a web server to obtain data, you have two choices:
I. You can make a socket connection and send GET and POST commands.
II. You can make a server connection and send GET and POST commands.
III. You can use the URLConnection class and have it issue the commands on your behalf.
IV. You can use the URL class and have it issue the commands on your behalf.
A)I and II
B)II and III
C)III and I
D)IV and II

Question

Quizplus · Accepted Answer

Options I and III are correct. You can indeed make a socket connection to communicate directly with a web server using GET and POST commands. Alternatively, you can use the URLConnection class in Java, which abstracts the details of the connection and can issue commands on your behalf. Option II is incorrect because "making a server connection" is not a specific or standard method of communication in this context. Option IV is incorrect because the URL class itself does not issue commands; it represents a Uniform Resource Locator (URL) and can be used to open a connection to the resource it represents, but the URLConnection class is what actually handles issuing commands.

When You Communicate with a Web Server to Obtain Data