Refer to the exhibit. How will data files get retrieved from the server?
- The client establishes a two-way connection to the server on port 21 for file transfer.
- From the perspective of computer A, port 21 is used to signal a push to the server, and port 20 is used to signal a pull from the server.
- There is a connection established to send files from the client to the server and a second connection to get files from the server to the client.
- Computer A establishes a connection to the server on port 21 for control and uses a second connection on port 20 to download and upload files.
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