# Knowledge check: Improving the experience

1. **What is a heuristics evaluation?**
    
    * <mark>A heuristics evaluation examines and assesses the usability of a particular project.</mark>
        
    * A heuristics evaluation applies the brand style to a product,
        
    * A heuristics evaluation detects accessibility problems.
        
2. **Which of the following people are notable for making various product and UI design recommendations? Choose all that apply.**
    
    * <mark>Dieter Rams</mark>
        
    * <mark>Jakob Nielson</mark>
        
    * Donald Knuth
        
    * Dennis Ritchie
        
3. **There are four core principles of accessibility upon which WCAG (Web Content Accessibility Guidelines) has been built. Choose all that apply.**
    
    * <mark>Perceivable</mark>
        
    * <mark>Robust</mark>
        
    * <mark>Operable</mark>
        
    * <mark>Understandable</mark>
        
    * Readable
        
4. **What is the term for the technical procedure where information is checked to determine if the data entered by the user is accurate?**
    
    * Verification
        
    * Double entry
        
    * <mark>Validation</mark>
        
5. **In client-side validation, the form data is validated in the browser**
    
    * <mark>True</mark>
        
    * False
        

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