The correct answer is C. FTP (File Transfer Protocol).
Ping: Uses the ICMP protocol, which operates at the network layer and doesn't utilize TCP.
TFTP (Trivial File Transfer Protocol): While sometimes categorized as an application-layer protocol, it primarily uses UDP for datagram-based transfers, not TCP.
FTP: Employs TCP to establish a reliable connection and deliver data packets for file transfers.
HTTP packet: HTTP works within the application layer but itself isn't a protocol; it defines the format and structure of messages used by various protocols that can run on top of TCP or UDP.
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