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.

1. WHAT IS INTERNET

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?