Which of the following protocols is built on client-server architecture and…

2017

Which of the following protocols is built on client-server architecture and uses separate control and data connections between the client and the server?

Answer: A. FTP — FTP (File Transfer Protocol) establishes two parallel connections: a Control Connection (Port 21) for sending commands/responses and a Data Connection (Port…

  1. A.

    FTP

  2. B.

    POP

  3. C.

    TELNET

  4. D.

    SMTP

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Correct answer: A

FTP (File Transfer Protocol) establishes two parallel connections: a Control Connection (Port 21) for sending commands/responses and a Data Connection (Port 20) for actual file transfer. This out-of-band signaling mechanism makes it unique among the given options.

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