PORT FLASH CARDS

6.02 Compare and contrast Transmission Control Protocol (TCP) and User Datagram Protocol (UDP)

  • What protocol uses port 20 (TCP)?

  • File Transfer Protocol (FTP) — Data connection for file transfer.

  • What is the purpose of port 21 (TCP)?

  • File Transfer Protocol (FTP) — Control connection for managing file transfers.

  • What protocol uses port 22 (TCP)?

  • Secure Shell (SSH) — Provides a secure connection to the command-line interface of a server.

  • What is the purpose of port 23 (TCP)?

  • Telnet — Provides an unsecure connection to the command-line interface of a server.

  • What protocol uses port 25 (TCP)?

  • Simple Mail Transfer Protocol (SMTP) — Transfers email messages across a network.

  • What protocol uses port 53 (TCP/UDP)?

  • Domain Name System (DNS) — Facilitates the identification of hosts by name alongside IP addressing.

  • What is the purpose of port 67 (UDP)?

  • Dynamic Host Configuration Protocol (DHCP) Server — Provides IP address configuration to clients.

  • What protocol uses port 68 (UDP)?

  • DHCP Client — Requests a dynamic IP address configuration from a server.

  • What protocol uses port 80 (TCP)?

  • HyperText Transfer Protocol (HTTP) — Provides access to unsecure websites and web services.

  • What is the purpose of port 110 (TCP)?

  • Post Office Protocol (POP) — Retrieves email messages from a server mailbox.

  • What protocols use ports 137-139 (UDP/TCP)?

  • NetBIOS over TCP/IP — Supports networking features of legacy Windows versions.

  • What protocol uses port 143 (TCP)?

  • Internet Mail Access Protocol (IMAP) — Reads and manages mail messages on a server mailbox.

  • What is the purpose of port 161 (UDP)?

  • Simple Network Management Protocol (SNMP) — Queries status information from network devices.

  • What is the purpose of port 162 (UDP)?

  • SNMP trap operation — Reports status information to a management server.

  • What protocol uses port 389 (TCP)?

  • Lightweight Directory Access Protocol (LDAP) — Queries information about network users and resources.

  • What protocol uses port 443 (TCP)?

  • HTTP Secure (HTTPS) — Provides secure websites and services.

  • What protocol uses port 445 (TCP)?

  • Server Message Block (SMB) — Implements Windows-compatible file and printer sharing services on a local network (also referred to as Common Internet File System [CIFS]).

  • What protocol uses port 3389 (TCP)?

  • Remote Desktop Protocol (RDP) — Provides a secure connection to the graphical desktop of a computer.

  • What protocol uses port 69 (UDP)?

  • Trivial File Transfer Protocol (TFTP): Transfers files and has built-in acknowledgment mechanisms.