Sunday 21 February 2021

IP UNIT-1 TWO MARKS WITH ANSWERS

What is internet?
The Internet is a global system of interconnected computer networks that use the standard Internet protocol suite (TCP/IP) to link several billion devices worldwide. It is a network of networks that consists of millions of private, public, academic, business, and government networks of local to global scope, linked by a broad array of electronic, wireless, and optical networking technologies. 

What is Web 2.0?

Web 2.0 is describes a second generation of the World Wide Web that is focused on the ability for people to collaborate and share information online. Web 2.0 basically refers to the transition from static HTML Web pages to a more dynamic Web that is more organized and is based on serving Web applications to users.

What are the features of Web 2.0?

·         Allows users to collectively classify and find information 

·         Dynamic content; responsive to user input

·         Information flows two ways between site owner and site user by means of evaluation, review, and commenting.

·         API to allow automated usage

What's the difference between intranet, extranet and internet?

Intranet is shared content accessed by members within a single organization.

Extranet is shared content accessed by groups through cross-enterprise boundaries.

Internet is global communication accessed through the Web.

Define WWW.

The World Wide Web (www, W3) is an information system of interlinked hypertext documents that are accessed via the Internet and built on top of the Domain Name System.

What is role of HTTP in accessing a web page?

HTTP defines how messages are formatted and transmitted, and what actions Web servers and browsers should take in response to various commands. 

Define URL.

A uniform resource locator (URL) is a reference to a resource that specifies the location of the resource on a computer network and a mechanism for retrieving it. 

What is website?

A website, also written as web site, or simply site, is a set of related web pages typically served from a single web domain. A website is hosted on at least one web server, accessible via a network such as the Internet or a private local area network through an Internet address known as a uniform resource locator (URL).

What is web browser?

A web browser is a software application for retrieving, presenting and traversing information resources on the World Wide Web.

What is web server?

Web servers are computers that deliver (serves up) Web pages. The primary function of a web server is to store, process and deliver web pages to clients. The communication between client and server takes place using the Hypertext Transfer Protocol (HTTP). Pages delivered are most frequently HTML documents, which may include images, style sheets and scripts in addition to text content.

How does DNS help in finding web server?

Every Web server has an IP address and possibly a domain name. These details are kept at DNS system which helps the client to find the web server over the internet.

Define web document or web page.

A document on the World Wide Web, consisting of a hypertext file and any related files for scripts and graphics, and often hyperlinked to other documents on the Web.

What are the types of web documents?

a.     Static webpage

b.    Dynamic webpage

Define HTML.

HTML stands for Hyper Text Markup Language. It is the dominant markup language for creating websites and anything that can be viewed in a web browser.

What is HTML 5.0?

HTML 5 is a new standard for HTML whose main target is to deliver everything without need to any additional plugins like flash, Silverlight etc.

What does DOCTYPE mean?

The term DOCTYPE tells the browser which type of HTML is used on a webpage. In turn, the browsers use DOCTYPE to determine how to render a page.

What are some new HTML5 markup elements?

  • <article>
  • <aside>
  • <bdi>
  • <command>
  • <details>
  • <figure>
  • <figcaption>
  • <summary>
  • <header>
  • <footer>
  • <hgroup>
  • <mark>
  • <meter>
  • <nav>
  • <progress>
  • <ruby>
  • <rt>
  • <section>
  • <time>
  • <wpr>
Define CSS.

Cascading Style Sheets (CSS) is a style sheet language used for describing the presentation of a document written in a markup language like HTML. CSS is designed to enable the separation of presentation and content, including layout, colors, and fonts
Mention various types of CSS.
  1. Internal CSS
  2. External CSS
  3. Embedded CSS

What are external style sheets?
The style sheets which has been stored in separate files and included in an HTML documents through the use of a link element are known as external style sheets.

What are embedded style sheets?
A style sheet that is included in the content of a style element is known as an embedded style sheet.

What are the two methods of implementing style sheets?
The two methods of implementing styles to HTML elements are
  1. Rule Cascading
  2. Inheritance

Give some advantages of using cascading style sheets.
  • Making changes to the layout
  • File Size
  • Search Engines
  • Accessibility
  • Consistency

Mention the need for cascading style sheets.
A CSS (cascading style sheet) file allows you to separate your web sites (X)HTML content from it’s style. As always you use your (X)HTML file to arrange the content, but all of the presentation (fonts, colors, background, borders, text formatting, link effects & so on…) are accomplished within a CSS.