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?
- A.
FTP
- B.
POP
- C.
TELNET
- D.
SMTP
Attempted by 214 students.
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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.