An Overview of the  TCP/IP model

Transmission Control Protocol/ Internet Protocol



A TCP/IP network is a collection of communication protocols that are used on the internet to interconnect network devices.


1. Focus on accuracy. 2. Ensure that data is sent without error.   3. If data fails or is lost, only the incorrect data or the lost data is retransmitted, not the whole data.

TCP/IP model can be seen as a concise version of the OSI model. It is composed of four layers, which perform different tasks.

Layers in TCP/IP Model

Responsible for node-to-node communication and for controlling UI specifications. The layer contains protocols such as:    Browser — HTTP / HTTPS, FTP, DNS  Outlook — SMTP  WhatsApp — Customized (XMPP).  Remote Desktop — Telnet, RDP.

1. Application Layer

It ensures end-to-end data delivery without errors, as well as protecting upper-layer applications from complex data. The layer contains protocols such as TCP and UDP.

2. Transport Layer

Learn more about the other layers of the TCP/IP model.

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