Chapter 2Networking

THE COMPTIA A+ 220-1101 TOPICS COVERED IN THIS CHAPTER INCLUDE THE FOLLOWING:

  • 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 ...

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