Question and Answer: 1-3 Answers
An example of one correct answer is the graphic below, which also serves as the graphic for Question 2.
Node 5 is the dangling node.
Yes, it is possible for a graph to have more than one dangling node. In the graph below, consider making the link from webpage 4 to webpage 5 inactive. Then webpages 4 and 5 are dangling nodes.