Which port and protocol does TFTP use for file transfers?

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Study for the CPSA Port Numbers Exam. Practice with flashcards and multiple choice questions, each with hints and explanations. Get ready for your test!

Multiple Choice

Which port and protocol does TFTP use for file transfers?

Explanation:
TFTP uses UDP for its transfers, with a well-known starting point on port 69. When a client requests a file, it sends that request to the server’s UDP port 69. From there, the actual file data is exchanged, often on a separate ephemeral port chosen during the transfer. So the best answer is the combination of UDP and port 69. Other options mix up the protocol or the port: for example, using TCP wouldn’t match TFTP’s UDP-based design, and the other ports shown are used by different services (DHCP on 68/67 and DNS on 53), not TFTP.

TFTP uses UDP for its transfers, with a well-known starting point on port 69. When a client requests a file, it sends that request to the server’s UDP port 69. From there, the actual file data is exchanged, often on a separate ephemeral port chosen during the transfer. So the best answer is the combination of UDP and port 69.

Other options mix up the protocol or the port: for example, using TCP wouldn’t match TFTP’s UDP-based design, and the other ports shown are used by different services (DHCP on 68/67 and DNS on 53), not TFTP.

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