The recurrence icon resembles a ____.

The child axis returns XElements from the set of nodes which are _______ the current node.

a) lower in the hierarchy than b) direct children of c) Both (a) and (b). d) None of the above.

Which of the following are characteristics of a star topology? (Choose all that apply.)

A. continuous path with no endpoint B. multiple nodes attached to a central device C. may involve a switch D. a terminator is at the end of each cable segment