Advertisement
Online Test Banks
Score higher
See Online Test Banks
eLearning
Learning anything is easy
Browse Online Courses
Mobile Apps
Learning on the go
Explore Mobile Apps
Dummies Store
Shop for books and more
Start Shopping

Network Basics: TCP/IP and OSI Network Model Comparisons

Internet Protocol (IP) version 4 (IPv4) is the current standard “IP” protocol used with TCP/IP — Transmission Control Protocol/Internet Protocol — which is the protocol for Internet addressing. Like the Open System Interconnection (OSI) model, TCP/IP has its own model.

The OSI model and the TCP/IP models were both created independently. The TCP/IP network model represents reality in the world, whereas the OSI mode represents an ideal. With that said, the TCP/IP network model matches the standard layered network model as it should.

The following figure shows the relationship between the OSI model and the TCP/IP model.

image0.jpg

The TCP/IP network model has four basic layers:

  • Network interface (layer 1): Deals with all physical components of network connectivity between the network and the IP protocol

  • Internet (layer 2): Contains all functionality that manages the movement of data between two network devices over a routed network

  • Host-to-host (layer 3): Manages the flow of traffic between two hosts or devices, ensuring that data arrives at the application on the host for which it is targeted

  • Application (layer 4): Acts as final endpoints at either end of a communication session between two network hosts

blog comments powered by Disqus
Advertisement
Advertisement

Inside Dummies.com

Dummies.com Sweepstakes

Win an iPad Mini. Enter to win now!