2025-01-07T19:52:45+03:00[Europe/Moscow] en true Define and describe TCP 20, Define and describe TCP 21, Describe FTP, Define and describe TCP 22, Define and describe TCP 23, Define and describe TCP 25, Define and describe UDP 53, Define and describe UDP 67/68, Define and describe TCP 80, Define and describe TCP 443, Define and describe TCP 110, Define and describe TCP 143, Define and describe UDP 137, Define and describe TCP 139, Define and describe TCP 445, Define and describe UDP 161, Define and describe UDP 162, Define and describe TCP 389, Define and describe TCP 3389 flashcards
CompTIA A+ Core 1: Common Network Ports

CompTIA A+ Core 1: Common Network Ports

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  • Define and describe TCP 20
    Used by FTP (File Transfer Protocol), server sends data from this port
  • Define and describe TCP 21
    Used by FTP (File Transfer Protocol), client sends a request from this port
  • Describe FTP
    The standard network protocol for transferring files from one host to another over a TCP-based network, FTP authenticates with a username and password
  • Define and describe TCP 22
    Used by SSH (Secure Shell), SSH is an encrypted version of Telnet, used to login to devices remotely
  • Define and describe TCP 23
    Used by Telnet, it is an unencrypted communication protocol for remote login
  • Define and describe TCP 25
    Used by SMTP (Simple Mail Transfer Protocol), it facilitates server-to-server email transfer and can be configured to send mail from a client to a mail server
  • Define and describe UDP 53
    Used by DNS (Domain Name System), it converts domain names (URLs) to IP addresses
  • Define and describe UDP 67/68
    Used by DHCP (Dynamic Host Configuration Protocol), it automatically configures IP addresses, the subnet mask, and other functions, a DHCP server assigns addresses in real-time from a pool for a set lease interval, addresses are assigned by MAC address
  • Define and describe TCP 80
    Used by HTTP (Hypertext Transfer Protocol), it facilitates communication to web servers on the internet
  • Define and describe TCP 443
    Used by HTTPS (Hypertext Transfer Protocol Secure), it is an encrypted upgrade from HTTP
  • Define and describe TCP 110
    Used by POP3 (Post Office Protocol v3), it authenticates and retrieves emails from a mail server, it has basic mail transfer functionality
  • Define and describe TCP 143
    Used by IMAP4 (Internet Message Access Protocol v4), it functions similarly to POP3, but it allows inbox management from multiple clients
  • Define and describe UDP 137
    Used by NetBIOS over TCP/IP, it facilitates use of the SMB/CIFS (Server Message Block/Common Internet File System) for file and peripheral device sharing, this port identifies the names of the host and client
  • Define and describe TCP 139
    Used by NetBIOS over TCP/IP, it facilitates use of the SMB/CIFS (Server Message Block/Common Internet File System) for file and peripheral device sharing, this port establishes the connection for the session
  • Define and describe TCP 445
    Used by SMB/CIFS (Server Message Block/Common Internet File System), it facilitates a direct SMB connection over TCP without using the NetBIOS framework
  • Define and describe UDP 161
    Used by SNMP (Simple Network Management Protocol), it gathers statistics from network devices, the current version ensures integrity, authentication, and encryption, this port creates queries (solicited)
  • Define and describe UDP 162
    Used by SNMP (Simple Network Management Protocol), it gathers statistics from network devices, the current version, ensures integrity, authentication, and encryption, this port creates traps (unsolicited)
  • Define and describe TCP 389
    Used by LDAP (Lightweight Directory Access Protocol), it stores and retrieves information in a network directory, it is commonly used in Microsoft Active Directory
  • Define and describe TCP 3389
    Used by RDP (Remote Desktop Protocol), it facilitates the remote sharing of a desktop