
What is ARPANET
what is ARPANET ? In the late 1960s upon the request of the US DoD, Advanced Research Project Agency (ARPA) invited a network solution internet for reliable communication for the US military in case of war.
ARPA (now DARPA) built a network that could continue to function in the midst of partial outages that could be caused by bomb attacks.
The internet included a WAN called ARPANET is considered as the purpose of the internet.

What is Internet ?
“The internet is a massive network of networks, it connects millions of computers together globally, forming a network in which any computer can communicate with any other computer as long as they are both connected to the internet. information that travels over the internet does so via a variety of languages known as protocols.”
many applications run on the internet., the most popular one world wide web, some of the rest a FTP, Email, Usenet, news groups, instant messaging, etc.
There are no owners for the internet. However, these networks should be developed and maintained by the providers (ISP/IAP). Therefore those who provide network connectivity we can call them (Internet service providers) have to change individuals/organizations when they want to access the internet through their network.
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