Web, Web 2.0, Web 3.0

 Web:

1. The World Wide Web—commonly referred to as WWW, W3, or the Web.

2. Web—is an interconnected system of public webpages accessible through the Internet.

3. The Web is not the same as the Internet.

4. Tim Berners-Lee known as the father of World Wide Web or Web.

5. Tim Berners-Lee proposed the architecture of Web.

6. The Web uses HTTP protocol to transmit data and share information.

Web 2.0

1. Web 2.0 are websites and applications that make use of user-generated content for end-users.

2. Web 1.0 is the "read-only Web" , Web 2.0 is the "participative social Web," and Web 3.0 is the "read, write, execute Web."

3. Web 2.0 is greater collaboration among Internet users, content providers and enterprises. 

4. Types of social media sites (Facebook, Twitter, LinkedIn etc.) and applications include forums, microblogging, social networking, Social bookmarking, social curation, and wikis are examples of Web 2.0

5. The foundational components of Web 2.0 are CSS (Cascading Style Sheets) and AJAX (Asynchronous JavaScript And XML)

6. Web 2.0 also used Cloud Services like IaaS (Infrastructure as a Service), PaaS (Platform  as a Service) and SaaS (Software  as a Service).

7. Web 2.0 use relational database.

8. Web 2.0 use cookies.

Web 3.0

1. Web 3.0 also known as "read, write, execute" web.

2. Web 3.0 is decentralized web.

3. Web 3.0 use Cryptocurrency.

4. Web 3.0 use AI.

5. Web 3.0 use Blockchain Technology.

6. Web 3.0 use NFTs - Users can get unique tokens that are assigned value or provide some form of perk/cookies.

Email - Class 12 IP

 EMAIL:

1. E-Mail stands for Electronic Mail.

2. Ray Tomlinson known as father of email.

3. Ray Tomlinson invented email in 1971 as part of a program of ARPANET.

4. Shiva Ayyadurai also claimed as inventor of email in 1978.

5. Email is a method to sends messages from one computer to another computer through the internet.

6. Email is a computer-based application for the exchange of messages between users. 

7. Format of email is  "username@domainname". For example : sharmag@gmail.com

8. Every email address/id has 3 parts:

    (a) username

    (b) @ [at] Symbol

    (c) domainname

9. Most Popular Email Providers are:

    (a) GMail

    (b) Outlook

    (c) Hotmail

    (d) Yahoo Mail

    (e) ProtonMail

    (f)  Zoho Mail

    (g) Titan

10. Popular Email Clients

    (a) Apple iPhone

    (b) Gmail

    (c) Apple iPad

    (d) Outlook

    (e) Apple Mail

    (f) Yahoo! Mail

    (g) Samsung Mail

    (h) Google Android

    (i) Windows Live Mail

Difference between IPv4 and IPv6

 IPv4:

1. IPv4 stands for Internet Protocol version 4

2. IPv4 is a 32 bits IP address.

3. IPv4 has 4 parts

4. Each part of IPv4 has 8 bits

5. IPv4 normally represent in binary or decimal number system.

6. Dot (.) is used as a separator in IPv4

Examples of IPv4

203.56.78.4

192.168.0.1

127.0.0.1

IPv6:

1. IPv6  stands for Internet Protocol Version 6

2. IPv6 is a 128 bits IP address

3. IPv6 has 8 parts

4. Each part of IPv6 has 16 bits

5. Colon (:) is used as seperator in IPv6

6. Binary and Hexadecimal number system is used to represent IPv6

Examples of IPv6

12A2:1500:0001:1524:A2F1:1551:0101:0015

::1

12::1

Difference Between TCP and IP Protocol

 TCP:

1. TCP stands for Transmission Control Protocol.

2. Main function of TCP is to deliver the data to the respective destination.

3. TCP is a transport layer protocol.

4. TCP is a connection - oriented protocol

5. TCP arrange the packets in proper order before they reach the application.

IP:

1. IP stands for Internel Protocol.

2. IP is a network layer protocol

3. The main task of IP is to deliver the packets from source to the destination based on the IP addresses.

4. IP protocol provides the connectionless service.

5. The first version of IP (Internet Protocol) was IPv4.

6. The Second version of IP (Internet Protocol) was IPv6.

FTP - Class 11 and 12 CS and IP Notes

 FTP:

1. FTP is a networking protocol.

2. FTP stands for File Transfer protocol.

3. FTP operates at Application Layer.

4. FTP is used to transfer files between client and server or one host to another.

5. FTP is founded by Abhay Bhushan in 1971

6. FTP is TCP/IP protocol.

7. Port number of FTP is 21

8. FTP use two channels

9. Examples of FTP are FileZilla, WinSCP etc.

HTTPS - Class 11 and 12 CS and IP Notes

 HTTPS:

1. Hypertext Transfer Protocol Secure.

2. HTTPS is an extension of the Hypertext Transfer Protocol (HTTP).

3. It is used for secure communication over a computer network.

4. HTTPS also referred to as HTTP over TLS, or HTTP over SSL.

5. In HTTPS, the communication is encrypted using Transport Layer Security (TLS) or Secure Sockets Layer (SSL).

6. HTTPS  is a secure version of the HTTP protocol that uses the SSL/TLS protocol to encrypt data.

7. Port number of HTTPS is 443

8. HTTPS uses an encryption protocol to encrypt communications.

9. HTTPS transfers data in cipher text (encrypt text).

10. HTTPS requires SSL certificate.

11. HTTPS is slower than HTTP

12. HTTPS helps to improve search ranking.

13. HTTPs URLs begin with https://

HTTP - Class 11 and 12 CS and IP Notes

 HTTP:

1. HTTP stands for Hypertext Transfer Protocol.

2. HTTP is an application-layer protocol.

3. HTTP was designed for communication between web browsers and web servers.

4. HTTP used to load web pages using hyperlinks.

5. HTTP is the set of rules for transferring files -- such as text, images, sound, video and other multimedia files over the internet.

6. HTTP is connectionless.

7. HTTP is media independent

8. HTTP is stateless

9.  Port number of HTTP is 80

10. HTTP URLs begin with http://

11. HTTP is faster than HTTPS

12. HTTP does not improve search rankings.