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TCP/IP Architectural Model

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Here are some more things you need to know for the CCNA exam!

 

 TCP/IP Architectural Model
 Application HTTP, POP3, SMTP
 Transport  TCP, UDP
 Internet  IP
 Network Ethernet, Cabling standards, Frame Relay
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Common Applications & their Port Numbers

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This is a list of common applications and port numbers you need to know for the CCNA exam.

Common Applications
& their Port Numbers
 23  TCP  Telnet
 25  TCP  SMTP
 53  TCP, UDP  DNS
 67,68  UDP  DHCP
 69  UDP  TFTP
 80  TCP  HTTP
 110  TCP POP3
 161  UDP  SNMP
 443  TCP  SSL
 14,384-32,767  UDP  VoIP

Misc:

TCP: Transmission Control Protocol
UDP: User Datagram Protocol

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