Computer Support/Networking/Protocols

This lesson covers networking protocols.

Objectives and Skills

Objectives and skills for the networking protocols portion of A+ certification include:

Explain common TCP and UDP ports, protocols, and their purpose.

• Ports
  • 21 – FTP
  • 22 – SSH
  • 23 – TELNET
  • 25 – SMTP
  • 53 – DNS
  • 80 – HTTP
  • 110 – POP3
  • 143 – IMAP
  • 443 – HTTPS
  • 3389 – RDP
  • 137-139 NetBIOS/NetBT
  • 445 – SMB/CIFS
  • 427 – SLP
  • 548 – AFP
• Protocols
  • DHCP
  • DNS
  • LDAP
  • SNMP
  • SMB
  • CIFS
  • SSH
  • AFP
• TCP vs. UDP

Readings

1. Wikipedia: File Transfer Protocol (FTP)
2. Wikipedia: Secure Shell (SSH)
3. Wikipedia: Telnet
4. Wikipedia: Simple Mail Transfer Protocol (SMTP)
5. Wikipedia: Domain Name System (DNS)
6. Wikipedia: Hypertext Transfer Protocol (HTTP)
7. Wikipedia: Post Office Protocol (POP3)
8. Wikipedia: Internet Message Access Protocol (IMAP)
9. Wikipedia: HTTPS
10. Wikipedia: Remote Desktop Protocol (RDP)
11. Wikipedia: NetBIOS over TCP/IP (NetBT)
12. Wikipedia: Server Message Block (SMB)
13. Wikipedia: Service Location Protocol (SLP)
14. Wikipedia: Apple Filing Protocol (AFP)
15. Wikipedia: Dynamic Host Configuration Protocol (DHCP)
16. Wikipedia: Lightweight Directory Access Protocol (LDAP)
17. Wikipedia: Simple Network Management Protocol (SNMP)
18. Wikipedia: Transmission Control Protocol (TCP)
19. Wikipedia: User Datagram Protocol (UDP)

Multimedia

1. YouTube: Common TCP and UDP Ports - CompTIA A+ 220-901: 2.4
2. Packetlife.net: Common TCP and UDP Ports cheatsheet