Chapter 6Introduction to TCP/IP

THE FOLLOWING COMPTIA A+ 220-1101 EXAM OBJECTIVES ARE COVERED IN THIS CHAPTER:

  • 2.1 Compare and contrast Transmission Control Protocol (TCP) and User Datagram Protocol (UDP) ports, protocols, and their purposes.
    • Ports and protocols
      • 20/21—File Transfer Protocol (FTP)
      • 22—Secure Shell (SSH)
      • 23—Telnet
      • 25—Simple Mail Transfer Protocol (SMTP)
      • 53—Domain Name System (DNS)
      • 67/68—Dynamic Host Configuration Protocol (DHCP)
      • 80—Hypertext Transfer Protocol (HTTP)
      • 110—Post Office Protocol 3 (POP3)
      • 137/139—Network Basic Input/Output System (NetBIOS)/NetBIOS over TCP/IP (NetBT)
      • 143—Internet Mail Access Protocol (IMAP)
      • 161/162—Simple Network Management Protocol (SNMP)
      • 389—Lightweight Directory Access Protocol (LDAP)
      • 443—Hypertext ...

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