Un resumen completo del modelo #TCPIP (Todas sus capas en menos de 7 minutos)

Introduction to TCP/IP Model

In this section, the speaker introduces the TCP/IP model and explains the encapsulation process through a simple example involving a web server and a client computer.

Work of Different Layers in TCP/IP Model

• The application layer processes the webpage, formats it, and encodes it into binary code. It may also apply encryption algorithms for secure transmission.

• The transport layer segments the webpage if needed, especially for web communications using protocols like TCP. It adds its own header with information such as source and destination port numbers.

• The network layer (IP) encapsulates the data by adding its header containing logical addressing information like IP addresses. Once done, it passes the data to the next layer.

• The data link layer adds headers at the beginning and trailers at the end of the data packet. These contain physical addressing information like MAC addresses of communicating devices. A trailer helps ensure data integrity during transmission.

• Finally, at the physical layer, data is encoded into signals such as electrical signals or light waves for transmission over communication media to reach its destination.

Data Processing on Client Side

• Upon receiving data, the client's physical layer decodes signals back into binary code for processing by higher layers.

• Each subsequent layer removes its respective header until reaching the application layer where HTTP headers are stripped off before presenting human-readable content to users.

Terminology in Encapsulation Process

• At each layer: application - data; transport - segments; network - packets; data link - frames; physical - signals for transmission.