Training Guide: Programming in HTML5 with JavaScript and CSS3 Ebook

62 CHAPTER 2 Getting started with HTML5

Answers

This section contains the answers to the lesson review questions in this chapter.

Lesson 1

1. Correct answer: C
   A. Incorrect: Although this example would work today, it’s possible that a vin attri-
   bute could be introduced by a future version of HTML that would cause a conflict.
   B. Incorrect: You cannot use the id attribute as an expando attribute because the id
   attribute is already defined by the HTML5 specification to provide a unique identi-
   fier to an element.
   C. Correct: This is a properly defined expando attribute that will not conflict with
   attributes introduced by future versions of HTML because the attribute name is
   prefixed with “data-“ as required by the HTML specification.
   D. Incorrect: Although this example would work today, it’s possible that a vin attri-
   bute could be introduced by a future version of HTML that would cause a conflict.


2. Correct answer: A
   A. Correct: HTML5 is preceded by and derived from HTML 4.01.
   B. Incorrect: Although HTML’s root is SGML, which means that HTML5 is derived
   from SGML, HTML5 is preceded by HTML 4.01.
   C. Incorrect: Although XHTML 1.0 was released after HTML 4.01, HTML5 does not
   inherit from XHTML1.0.
   D. Incorrect: Although XHTML1.0 inherits from XML, HTML5 does not.


3. Correct answer: D
   A. Incorrect: The element is the root element for your HTML5 document, but
   it should be listed after you indicate the document type to the browser.
   B. Incorrect: The tag must be contained within the element, so it
   cannot be located at the beginning of the HTML5 document.
   C. Incorrect: The