Answers

1. <student>
   <name>James Bond</name>
   <id>007</id>
   </student>

2. Most browsers display a tree structure that indicates the nesting of the tags. Some browsers display nothing at all because they can't find any HTML tags.
3. The text hamster.jpg is never displayed, so it should not be a part of the document. Instead, the src attribute tells the browser where to find the image that should be displayed.