Anatomy of Internet | SBS Technologies | Er Abdul Basit

 Anatomy of Internet 

Internet outlines the following major components 

• Internet Services

Internet is a combination of many networks and a large number of database and other services. The Major Services offered on internet are:

• Electronic Mail: All you need is someone's address and you send him or her all sort of things i.e. Documents, Picture, Videos, Audios etc.
• Telnet: It allows you to connect and log into a remote computer.
• FTP: File Transfer Protocol lets you transfer files from one computer on the Internet to another. 
• World Wide Web: (WWW, W3, Web) It is not a tool, program or service, but a way of viewing and accessing the internet.
• Usenet: It is a System of discussion group in which individual articles are distributed throughout the world.
• Archie: It lets you search the Archives file accessible by anonymous FTP. You give the complete or partial name of a file and archie returns the Internet address and location of files.
• WAIS: It Stands for Wide Area Information Server. It is client -server text searching system to search index database on remote computers. 

• Elements of Internet 

Internet includes client PCs, Servers and Networks 

• Clients PCs: These are the computers that request information from server. Client computers typically maintain part time connections.
• Server Computers: these are relatively computers with full - time internet connection and can provide can provide data to the clients computers relatively.
• Network: These are composed of one or more server computers and several client PCs.
• Nodes: Node is a generic term used to describe a client, server or network.

• Uniform Resource Locator (URL)
  
  
  

URL are the unique address of internet resource. 

A URL is divided into 4 parts

• Transfer/ Protocol
• Sub Domain
• Domain
• Server
• Directory Path
• File Name  
• Internet Protocol (IP) 

Internet Protocol is a method by which data is sent from one computer to another over the network.