The first network is created with the
creation of ARPANET in 1969.After that many networks are were developed (NPL
network ,Tymnet ,CYCLANDES ,Telenet).
The Internet protocol suite (TCP/IP)
is developed for data transferring.
allowed to communicate several computers through one network.
Organizations in creating/maintaining internet standards
World Wide Web Consortium is
known as W3c.
They are the ones who maintaining and modifies HTML.
Internet Engineering Task
Force is known as IETF. It is for develop internet standards.
Internet society (Isoc) is a non profitable volunteer
organization that makes internet standards.
Interactive Advertising Bureau (IAB) is an advertising business organisation,
it’s a non profitable organisation. They give advices for online advertising
and they develops its standards.
Importance of layers in TCP/IP
There are four layers
in the architecture in internet communication. This protocol defines how data
how data is received and sent through the network.
in transport layer
in network layer
What is a DNS? Its called Domain Name System.
When a device(Computer, Smart phone, Smart tv etc.) connected
to a computer network, the network system gives a unique numeric number for
it.It is called as an ip address. (192.168.50.251)
When we trying to reach a website by typing a web address
DNS comes to the middle of the procedure
, DNS converts that web address into a IP address.That is called DNS
resolution.Most of the time its done by a DNS server.
and Proxy Servers
Is a method
used for protect out devices from the threats coming from a network
It can be a
software or a hardware component.
restricts the flow of network and logs about the dropped packets. It can filter
incoming and outgoing packets.