INTERNET
Internet is made up of incredible numbers of devices, distrubted around the globe to help connectivity
Internet was worked on by vint cerf and bob khan
Internet travels by 3 ways
- Electricity
- Light
Radio
By Electricity: Internet slips binary information made up of bits (1 or 0)
Bandwidth is the measurements of the bits send over time.
By light - Internet travelling at the speed of light using fiber optic cables
By Radio - internet travelling in form of wireless . Binary numbers transformed into waves.
Internet is designed philosophy and architecture expressed in certain protocol called internet protocol (ip)
Traditional IP address is 32 bits IP4 and the modern ip address is 128 bits IP6
Domain name system (DNS) DNS services are connected in distributed hierarchy . They are subtle to DNS spoofing
Information in the internet move in packet of data in different router. Routers are special devices that act as data manger . Its keeps every records of every packets of data and chooses the path of transfer (cheapest and reliable)
TCP: Transmission control protocol - its manages the packets of data
URL: Uniform Resources locator - it ask for his information using GET request and send information using POST request
Safe website uses SSL(secure socket layer) and TLS (Transport layer Security)
Encryption- Hide it and scrambled and Decryption - Readable and unscrammbled Modern information are encrypted using 256 bits key