- The IP is the method or protocol by which data is sent from one computer to another computer on internet.
 - Each computer on the internet has at least one IP address that uniquely identifies it from all other computers on the internet.
 - IP or IP address is a number used to indicate the location of computer or other device on a network using TCP/IP.
 
Types of IP address:
- Static IP address: If a site has its own IP address and shares with no one else it is called static IP address.
 - Shared IP address: Using more than one site on an IP address is called shared IP address.
 
Classes of IP address:
- Class A: Address range from 1.0.0.1 to 126.255.255.254 and supports 16 million hosts on each of 127 networks.
 
- Class B: Address range from 128.1.0.1 to 191.255.255.254 and supports 65000 hosts on each of 16000 networks.
 
- Class C: Address range from 192.0.1.1 to 223.255.254.254 and supports 254 hosts on each of 2 million networks.
 
- Class D: Address range from 224.0.0.0 to 239.255.255.255 and supports reserved for multicast groups.
 
- Class E: Address range from 240.0.0.0 to 254.255.255.254 and supports reserved for future use, or research and development purposes.
 
Types of Internet Protocol:
Electronic-Mail:
- Include in the email protocol are three distinct protocols.
 - SMTP, IMAP, and POP3.
 - SMTP is a protocol used for sending mail.
 - IMAP and POP3 are used for receiving.
 
File Transfer Protocol:
- It is transferring a file from one computer to another.
 - It is commonly used for uploading a web page to a web server so that it may be seen on the World Wide Web.
 
HTTP:
- Its stands for Hyper Text Transfer Protocol.
 - It is the protocol used by web sever to allow web page to shown in a web browser.
 
NNTP:
- Its stands for Network News Transfer Protocol.
 - It is used for serving Usenet posts, Usenet is similar to the forums that many web sites have.
 
Gopher:
- It is used for menu based program that enables you to browse for information without knowing where the material is located.
 
Telnet:
- Telnet lets you log in to a remote computer just as you would if you were there.
 - So any commands that you would able to run from the remote computer.
 
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