Application layer of the TCP-IP Protocol

An application-layer protocol is a language network clients and servers use to communicate with each other.
The familiar Internet services are examples of application-layer protocols.
File Transfer Protocol (FTP), Hypertext Transfer Protocol (HTTP), and telnet are examples of application-layer protocols.
On UNIX machines, the

link,
network, and
transport layers

are handled by the kernel.
Application-layer protocols are handled by client and server processes. For example, the server side of the FTP protocol is handled by an FTP daemon process; the HTTP, or World Wide Web protocol, is handled by an HTTP client process (usually a Web browser), or, on the server side, an HTTP daemon server process.


	Lesson 3 Objective	The application layer of the TCP-IP Protocol What is the application layer of the TCP-IP Protocol?
		An application-layer protocol is a language network clients and servers use to communicate with each other. The familiar Internet services are examples of application-layer protocols. File Transfer Protocol (FTP), Hypertext Transfer Protocol (HTTP), and telnet are examples of application-layer protocols. On UNIX machines, the link, network, and transport layers are handled by the kernel. Application-layer protocols are handled by client and server processes. For example, the server side of the FTP protocol is handled by an FTP daemon process; the HTTP, or World Wide Web protocol, is handled by an HTTP client process (usually a Web browser), or, on the server side, an HTTP daemon server process. TCP-IP Layers Application - Quiz Click the Quiz link below to take a short multiple-choice quiz on TCP/IP layers. TCP-IP Layers Application - Quiz