Test yourself under real exam conditions: 50 timed questions, 60 on the clock, pass mark 70%%. Instant score with a full review of everything you got wrong. Free — no account needed.
Exam details
"a11y" is a numeronym for "accessibility" — 'a' + 11 letters + 'y'.
Accessibility means people with disabilities can perceive, understand, navigate, and interact with the web. Usability is the broader quality of a design being easy to use for everyone, including those without disabilities.
Visual, auditory, physical/motor, and cognitive/neurological disabilities.
A (lowest), AA (mid), and AAA (highest).
4.5:1.