What is Internet and How it Works
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The document explains the internet as a global network connecting billions of devices using the TCP/IP protocol for communication. It outlines the roles of different Internet Service Providers (ISPs), including tier-1, tier-2, and tier-3 providers, in facilitating internet access. Additionally, it notes the growth in the number of devices and users over the years and raises questions about the ownership and governance of the internet.
What is Internet and How it Works
- 2. How do you use internet Browsing web pages Sending emails Doing video calls Playing online games Browsing social media sites Online delivery using Amazon
- 3. INTERNET • Computer network that interconnects billions of computing devices throughout the world • Uses the Internet protocol suite (TCP/IP) to communicate between networks and devices • Traditional computing devices: Desktop, Linux servers • Modern computing devices: Laptops, smartphones, tablets, TV, cars • 2015 – 5 billion devices, 2020 – 25 billion devices • 3.2 billion internet users in 2015
- 5. DOES THE COMMUNICATION TAKES PLACE THROUGH CLOUD ?
- 7. WHO IS THE OWNER OF INTERNET? • Governments? • Bill Gates? • Mukesh Ambani? • Some company in USA?
- 8. • Multiple owners • Internet Service Providers(ISP) • The Internet is all about connecting end systems to each other, so the ISPs that provide access to end systems must also be interconnected • Tier-3 ISP – Provides internet facility to citizens • Tier-2 ISP – Regional internet service provider, provides services to TIER-3 ISP and large enterprises • TIER-1 ISP – International ISP, provides services to TIER-2 ISP, can reach every other network on internet
- 10. Routers, Switch, Modem and Access Points
- 12. WHAT HAPPENS WHEN YOU TYPE GOOGLE.COM IN YOUR WEB BROWSER?