Block 1, Part 4: An Accessible Web

Question 1

Glossary term: Accessibility

Answer 1

Web accessibility means that people with disabilities can use the Web. More specifically, Web accessibility means that people with disabilities can perceive, understand, navigate and interact with the Web, and that they can contribute to the Web.

Question 2

What was Tim Berners-Lees’ quote regarding accessibility on the web?

Answer 2

The power of the Web is in its universality.

Access by everyone regardless of disability is an essential aspect.

Question 3

What are the four principles of accessibility?

Answer 3

Perceivable
Operable
Understandable
Robust

Question 4

Define Perceivable.

Answer 4

Information and user interface components must be presentable to users in ways they can perceive.

This means that users must be able to operate the interface (the content or operation cannot be beyond their understanding).

Question 5

Define Operable

Answer 5

User interface components and navigation must be operable.
This means that users must be able to operate the interface (the interface cannot require interaction that any user cannot perform).

Question 6

Define Understandable

Answer 6

Information and the operation of user interface must be understandable.
This means that users must be able to understand the information as well as the operation of the user interface (the content or operation cannot be beyond their understanding|)

Question 7

Define Robust

Answer 7

Content must be robust enough that it can be interpreted reliably by a wide variety of user agents, including assistive technologies.
This means that users must be able to access the content as technologies advance (as technologies and user agents evolve, the content should remain accessible).

Question 8

What is WCAG 2.0 ?

And what does it do?

Answer 8

the latest version of the Web Content Accessibility Guidelines.
In this is contained the four principles of web accessibility.
Ir provides a framework to measure the success of a web application.

Question 9

What three Mobile ready tags exist to adapt web pages to be viewed on a mobile device, and what do they do?

Answer 9

HandheldFriendly: setting this tag to True indicates that the content is designed for a mobile browser and signals to the browser that the content should be displayed without scaling.
MobileOptimized: provides an integer that corresponds to the intended display width of the screen.
Viewpoint: is a rectangular region that control’s how the document’s contents are laid out and where text will wrap on the page.