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Which of the following is an essential characteristic of a client/server application? Select one:

a. One program calls another to request a task of some kind.

b. The code is compiled into an executable file

c. The source code is translated into machine language one line at a time.

d. The application does not require a network connection.

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Answer:

Option a: One program calls another to request a task of some kind.

Explanation:

A client/server application is a two-tier architecture where a computer machine act as a client and another as a server. It always involves the activity where a client machine (e.g. user computer) make request to a remote server for information.

One example would be our web browser which send http request to a remote web server and the server will response with the requested info that will be assembled and displayed in the web browser of the client computer.