1. Rendering engine is not responsible for
a) parsing the markup content (HTML)
b) parsing style information (CSS, XSL, and so on)
c) generating a visual presentation of the formatted content including media files referenced
d) none of the mentioned
Answer: d [Reason:] All the options mentioned are responsibility of rendering engine.
2. Firefox uses _________ rendering engine.
Answer: b [Reason:] Gecko is a web browser engine used in many applications developed by Mozilla Foundation and the Mozilla Corporation as well as in many other open source software projects. Gecko is free and open-source software subject to the terms of the Mozilla Public License version 2.
4. What is the use of “defer” attribute?
a) It defers rendering of html page
b) It defers script execution until the page has been rendered
c) It defers rendering of css attributes
d) None of mentioned
Answer: b [Reason:] The defer attribute is a boolean attribute. When present, it specifies that the script is executed when the page has finished parsing.
5. Which of the following statements is false?
a) async and defer attributes of script tag execute before the DOMContentLoaded event
b) defer executes each script sequentially
c) async executes each script when it is ready
d) all older browsers supports async attribute
Answer: d [Reason:] All older browsers does not support async. So async and defer are used together in combination.
6. Which of the following is used to read a HTML page and render it?
a) Web browser
b) Web server
c) Web matrix
d) None of the mentioned
Answer: a [Reason:] A web browser (commonly referred to as a browser) is a software application for retrieving, presenting and traversing information resources on the World Wide Web.
7. Which of the following is the first web browser?
b) Netscape Navigator
c) Internet Explorer
Answer: a [Reason:] The first web browser was invented in 1990 called World Wide Web which was later renamed to Nexus.
8. Who created the first web browser
a) Tim Berners Lee
c) Marc Andeersen
d) Mozilla foundation
Answer: a [Reason:] Sir Timothy John “Tim” Berners-Lee, also known as TimBL, is an English computer scientist, best known as the inventor of the World Wide Web. He made a proposal for an information management system in March 1989, and he implemented the first successful communication between a Hypertext Transfer Protocol (HTTP) client and server via the Internet sometime around mid-November of that same year.
9. State true or false. Nexus is first graphical web browser.
Answer: b [Reason:] Netscape is first graphical web browser.
10. The open source software version of netscape is
c) Internet Explorer
Answer: b [Reason:] On February 23, 1998, Netscape Communications Corporation created a project called Mozilla to co-ordinate the development of the Mozilla Application Suite, the open source version of Netscape’s internet software, Netscape Communicator.