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Today’s Internet is arguably the largest engineered system ever created by mankind, with hundreds of millions of connected computers, communication links, and switches; hundreds of millions of users who connect intermittently via handphones.

WeLearning platform provide you with a modern introduction to the dynamic field of computer networking, giving you the principles and practical insight to understand and learn computer networking application knowledge for the beginners.

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Why Learning Application Layer

Network applications are important part a computer network—if we couldn’t conceive of any useful applications, there wouldn’t be any need to design networking protocols to support them.

Information Communications

Different protocols working principles

Application Architecture

The structure of application layer

Modern Technologies

Application such as Email and Skype
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Socket Programming with TCP

A process sends messages into, and receives messages from, the network through a software interface called a socket. We said…

Simple Mail Transfer Protocol

Simple Mail Transfer Protocol (SMTP) is the principal application-layer protocol for Internet electronic mail. It uses the reliable data transfer…

File Transfer Protocol

The File Transfer Protocol (FTP) is a standard network protocol used for the transfer of computer files between a client…

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