How does Virtual Private Networks work & Blockchain analogy

Companies firstly use leased lines to communicate with branches remotely located in other areas or even overseas.Leased lines ranges from Integrated Services Digital Networks runs 144 kbps to Optical Carrier-3 (OC3, runs 155 Mbps). Leased lines is fast, secure when it comes to compare with WAN, but it is very expensive, and there is other weakness that it can’t provide service for mobile users. So nowadays companies intend to build their own Virtual Private Networks to communicate with remote offices and mobile employees.

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Blockchain analogy

Blockchain is like the service Googleprovide as Google slides. It can’t be recorded by itself, and every slide canonly be added to the last one created. Google slides is kind of like acompetition, like who can predict most accurately for what weather will be likefor next 10 mins in Toronto, and every participant uses their own predictivemodel, and the winner will be given Tom Hortons card as incentive. As thewinner slide are being agreed manually by every participant, it will bepermanent and public access to everyone.

Template: the tool shaped for particularuses like digging or mining. The thing made to be the foundation or base forother things.

Incentives: things as reward to encourage people to do it.