Have you ever heard of the Internet or the NET? I guess you have, but have you ever thought about the internet? The Internet is a network of a network connecting all different network-enabled devices which enable data and information sharing between them and that makes computer networks a core part of our life 1) Tell something about VPN (Virtual Private Network) 2) What are the advantages of using VPN? 3) What are the different types of VPNs? 4) What is an IPv4 address? 5) Describe the TCP/IP Reference Model 6) What are the HTTP and the HTTPS protocol?