FTP itself uses the TCP transport protocol exclusively, or in other words, it never uses UDP for its transport needs. Typically an application layer protocol will use one or the other. One notable exception to that is DNS or Domain
Various TCP and UDP ports - GeeksforGeeks TCP and UDP: 20 /21: File Transfer Protocol (FTP) Port used by FTP protocol to send data to client: TCP: 22: Secure Shell (SSH) Used as secure replacement protocol for Telnet: TCP and UDP: The transport layer has a lot of ports to accommodate lots of various applications protocols simultaneously. The ports are dictated by the type of Transport Layer: TCP and UDP TCP and UDP Raj Jain Washington University in Saint Louis Saint Louis, MO 63130 TCP FTP SMTP UDP Physical Ethernet Point-to-Point Wi-Fi Coax Fiber Wireless P2P DNSSkype. 3-7 User Datagram Protocol (UDP) Connectionless end-to-end service Provides multiplexing via ports Well-Known TCP/IP Port Numbers, Service Names & Protocols About TCP/UDP Ports. Port 0 to 1023: These TCP/UDP port numbers are known well-known ports. These ports are assigned to specific server sevice by the Internet Assigned Numbers Authority (IANA). For example, port 80 is used by web servers. TCP vs UDP - javatpoint
TCP and UDP server using select - GeeksforGeeks
Nov 27, 2018 UDP File Transfer - Explained - KeyCDN Support
network protocols, TFTP, SMTP, TCP, UDP, ARP, RARP, TCP/IP
What’s the Difference Between TCP and UDP? Jul 03, 2017 UDP و TCP الفرق بين بروتوكول – IT Solutions