TCP/IP and the DOD Model | OneArcher | CCNA Tutorials English
TCP/IP and the DOD Model
DOD is condensed version of OSI 7 layer model
Process/Application Layer
Host to Host Layer or Transport Layer
Internet Layer
Network Access Layer or Link Layer
Process/Application Layer
Defines how to communicate for
Node to Node
Application to Application,
User to User Communications
controls user-interface Specifications
Host to Host or Transport Layer
Defines which
Level of Transmission that is TCP or UDP
TCP is reliable and UDP in non - reliable
End to end Error free communication
Packet Sequencing and Maintains Data integrity
Internet Layer or Network Layer
Defines which
Logical Transmission of Packets over the entire network
Addressing of host by giving them IP Addresses
Routing of Packets from different networks
Link Layer or Network Access Layer
Implements
Data Exchange between the host and network
Combined both Data Link and Physical Layer of the OSI model
Defines hardware addressing and protocol for physical layer
TCP/IP is so Popular as it could run on any existing or future Physical Network without any hardware dependency