How does a (modern) web browser interpret an unknown HTML element (e.g. <blabla>example</blabla>)?

Which of these is NOT a valid HTML button type?

Which attribute is used to determine where the HTML form data is sent to?

What does the colspan attribute of the HTML <TD> tag represent?

According to web standards the <TABLE> ... </TABLE> element is best used ....

Which HTML form attribute indicates how the form-data should be encoded?

The HTML document itself begins with

Which of the following is the correct syntax for making an option the default selected value for a drop-down list in a form?

Which of these elements require an end tag?

TRUE/FALSE. By default, unvisited links are underlined and blue, visited links are underlined and purple, and active links are underlined and red. This behavior can only be changed by using an external stylesheet.

HTML Event Attributes onload fires just before the page is finishing loading