5 Questions
Which port is used for the File Transfer Protocol (FTP)?
TCP 21
Which protocol is used for remote connections and running processes on target systems?
Telnet
Which port is used for sending email messages?
TCP 25
Which port is used for DNS zone transfers?
UDP 53
Which protocol and port combination is used for name queries about name-to-IP and IP-to-name mapping?
DNS on UDP 53
Study Notes
Network Protocols and Ports
- File Transfer Protocol (FTP) uses port 21.
- Secure Shell (SSH) protocol is used for remote connections and running processes on target systems, typically using port 22.
- Simple Mail Transfer Protocol (SMTP) is used for sending email messages, typically using port 25.
- Domain Name System (DNS) uses port 53 for DNS zone transfers.
- DNS also uses port 53 for name queries about name-to-IP and IP-to-name mapping, utilizing the User Datagram Protocol (UDP).
Test your knowledge of TCP ports 21 and 23 with this quiz. Learn about the File Transfer Protocol (FTP) and Telnet protocols and their uses in transferring files and remotely connecting to systems.
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