Computer Support/Networking/Protocols

This lesson covers networking protocols.

Objectives and Skills

Objectives and skills for the networking protocols portion of A+ certification include:^[1]

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

Multimedia

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

References