Internet and Web

Both Internet Explorer and Netscape Navigator are web browsers. The question uses confusing negative phrasing - option D 'none' is meant to indicate that none of the options are 'not browsers,' meaning both are browsers.

An extranet combines public internet accessibility with private intranet security, allowing controlled external access to internal resources for partners, customers, or suppliers while maintaining confidentiality of sensitive information.

Usenet is indeed a global discussion system where users post and read messages in organized newsgroups covering thousands of topics, functioning as an electronic bulletin board that predates the modern web forum.

This is an organisation with whose help one can get connected to the internet.

Blogs (weblogs) are personal logs or journal entries posted on the web, typically in reverse chronological order. Listservs are email distribution lists, webcasts are streaming broadcasts, and subject directories are organized collections of web links.

Option (3) is the correct answer.

Option (1) is the correct answer.

Option (1) is the correct answer.

Internet Explorer (IE), Mosaic, and Netscape Navigator were all web browsers. Mosaic was the first widely popular graphical web browser (1993). Netscape Navigator dominated in the mid-1990s before IE's rise.

It is a bar which helps us to known about the previous links.

Firefox is a free and open-source web browser developed by Mozilla Corporation. It was one of the first successful challengers to Internet Explorer's dominance and emphasizes user privacy and customization.

A URL (Uniform / Universal Resource Locator) is an address of the website or webpage. This is the correct answer.