Hey Guys welcome to my blog So today we going to discuss about Network

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Topics

What is Computer Network?

The computer network is interconnected devices that are used to communicate with each other
We can use the network to transfer the data between the two computer

What is Switch or hub?

Switch or hub == Which is used to connect multiple devices together in that same network
But the switch is more intelligent than the hub and the hub is dumb.

What is Router?

Router == This is used to connect the different network devices to other network devices

For Example

there are four systems of Ram, Kumar, Surya, and Sanjay ( Network 1 ) Connected with a switch or hub

Other Four systems of Rohit, Raj, Senthil, and Vicky ( Network 2 ) Connected with a switch or hub

Now Sanjay wants to communicate with Rohit but Rohit is on at a different network how did he communicate?

To fix this problem the router came in

Using that We can able to communicate with people using the different network

What is a Firewall?

Firewall == Which is used to block the unwanted connection or unethical hackers who attack your network
It is just like the safety Layer

If you visually Learn Please Watch the below Video

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Basic of Network | CCNA | Part 1