How VPN works?

Once the Internet connection is made, the user creates a VPN connection with the corporate VPN server. If the VPN connection is encrypted, there is no need to use encryption on the dial-up networking connection between the client and the ISP. Remote access data encryption does not provide end-to-end data encryption.
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what is VPN see here....https://www.youtube.com/watch?v=Cr5xdIp69NY

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