Information technology is building communications networks for a company, safeguarding data and information, creating and administering databases, helping employees troubleshoot problems with their computers or mobile devices, or doing a range of other work to ensure the efficiency and security of business information. Information Technology examples Telephone and radio equipment. Performance management software for managing goal setting and performance review. Software for word processing and spreadsheets. Video conferencing equipment. Personal computers. Content management software for blogging and collaboration.

2. “WWW”, "Web" or "W3"

3.  The World Wide Web is a way of exchanging
information between computers on the
Internet.
 The World Wide Web is the network of pages of
images, texts and sounds on the Internet which
can be viewed using browser software .

5. ⦁ The World Wide Web, or Web, consists of a worldwide
collection of electronic documents (Web pages)
⦁ A Web site is a collection of related Web pages and
associated items
⦁ A Web server is a computer that delivers requested Web
pages to your computer
⦁ Web 2.0 refers to Web sites that provide a means for
users to interact

6. Structural Components:
Clients/browsers – to dominant implementations
Servers – run on sophisticated hardware
Caches – many interesting implementations
Internet – the global infrastructure which facilitates data transfer
Semantic Components:
Hyper Text Transfer Protocol (HTTP)
Hyper Text Markup Language (HTML)
Extensible Markup Language (XML)
Uniform Resource Identifiers (URIs)

7. The Hypertext concept
 Hypertext is text which contains links to other texts. The term was coined
by Ted Nelson around 1965 .
The Hypermedia concept
 Hypermedia is a term used for hypertext which is not constrained to be
text: it can include graphics, video and sound

8.  A web browser displays a web document and enables users
to access web documents.
Examples: Google Chrome, Apple Safari, Mozilla Firefox

9. WEB Server
 This is a program that waits patiently for the browser to request a web
page. The servers looks for the requested information, retrieves it and send
it to the browser or sends an error message if the file is not found.
Examples: Apache, Microsoft's Internet Information Services (IIS) and Nginx -
- pronounced engine X

10. There are thirteen types of Web sites

12. ⦁ Web publishing is the development and maintenance
of Web pages

13. What is HTTPS and why it is used?
Hypertext Transfer Protocol Secure (HTTPS) is a protocol that secures
communication and data transfer between a user's web browser and a
website. HTTPS is the secure version of HTTP. The protocol protects users
against eavesdroppers and man-in-the-middle (MitM) attacks.
What is HTTP?
HTTP (Hypertext Transfer Protocol) is the set of rules for transferring files -
- such as text, images, sound, video and other multimedia files -- over
the web. As soon as a user opens their web browser, they are indirectly using
HTTP.

14. Differences between HTTP and HTTPS
 HTTP stands for HyperText Transfer Protocol and HTTPS stands for HyperText
Transfer Protocol Secure.
 In HTTP, URL begins with “http://” whereas URL starts with “https://”
 HTTP uses port number 80 for communication and HTTPS uses 443
 HTTP is considered to be insecure and HTTPS is secure
 HTTP Works at Application Layer and HTTPS works at Transport Layer

15. Differences between HTTP and HTTPS
 In HTTP, Encryption is absent and Encryption is present in HTTPS as discussed
above
 HTTP does not require any certificates and HTTPS needs SSL Certificates
 HTTP speed is faster than HTTPS and HTTPS speed is slower than HTTP
 HTTP does not improve search ranking while HTTPS improves search ranking.
 HTTP does not use data hashtags to secure data, while HTTPS will have the data

16. Electronic mail (email or e-mail) is a method of exchanging messages ("mail") between
people using electronic devices.
 Email operates across computer networks, primarily the Internet, and also local area
networks.
 Today's email systems are based on a store-and-forward model.
 Email servers accept, forward, deliver, and store messages.
 Neither the users nor their computers are required to be online simultaneously; they
need to connect, typically to a mail server or a webmail interface to send or receive
messages or download it.

18.  Intellectual property rights (IPR) refers to the legal rights given to the inventor
or creator to protect his invention or creation for a certain period of time.
 These legal rights confer an exclusive right to the inventor/creator or his assignee
to fully utilize his invention/creation for a given period of time.
Intellectual Property Rights (IPR)

19. What are the 7 intellectual property rights?
Intellectual property rights include
 patents,
 copyright,
 industrial design rights,
 trademarks,
 plant variety rights,
 trade dress,
 geographical indications,
 and in some jurisdictions trade secrets.