“TCP/IP (Transmission Control Protocol/Internet Protocol) is the basic communication language or protocol of the Internet.”

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What is TCP/IP?
“TCP/IP (Transmission Control Protocol/Internet Protocol) is the basic communication
language or protocol of the Internet.”
Three of the most common TCP/IP protocols
HTTP
The Hypertext Transfer Protocol (HTTP) is an application protocol for distributed, collaborative, and
hypermedia information systems. HTTP is the foundation of data communication for the World Wide
Web. Hypertext is structured text that uses logical links (hyperlinks) between nodes containing text.
FTP
The File Transfer Protocol (FTP) is the standard network protocol used for the transfer of computer
files between a client and server on a computer network.
HTTPS
"Hyper Text Transfer Protocol secure" Used between a web client and a web server, for secure data
transmissions. Often used for sending credit card transaction data or other private data from a web
client (i.e. Internet browser on a computer) to a web server.
UDP
Provides a comparatively simpler but unreliable service by sending packets from one host to another.
UDP does not take any extra measures to ensure that the data sent is received by the target host or not.
The term ‘unreliable connection’ is used where loss of some information does not hamper the task
being fulfilled through this connection. For example while streaming a video; loss of few bytes of
information due to some reason is acceptable as this does not harm the user experience much.

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SMTP
SMTP stands for Simple Mail Transfer Protocol. SMTP is used when email is delivered from an
email client, such as Outlook Express, to an email server or when email is delivered from one email
server to another.
Domain names and TCP/IP addresses
The TCP/IP address for a website or web server is typically not easy to remember. To remedy this
issue, a domain name is used instead. For example, 216.58.216.164 is one of the IP address for
Google and google.com is the domain name. Using this method, instead of a set of numbers, makes it
much easier for users to remember Computer Hope's web address.
Difference between TCP and UDP.
TCP
Transfer control protocol.
UDP
User diagram protocol.
1) Connection oriented. Connectionless.
2) Slower transmission of data. Faster transmission of data.
3) Resend of lost data. Do not resend of lost data.
4) Error checking. Errors not checked.
5)TCP does not control the
Flow of data. UDP control the flow of data.
6) TCP header size is 20 bytes. UDP header size is 8 bytes.
7) Required more computer
resources.
Required less computer resources.