When objects are moved into custom groups, they display in _________ order within each object type

What is the material surrounding the core of an optical waveguide called?

a. Cladding b. Aperture c. Mode field d. Step-index e. Graded-index

In the XPath 1.0 data model, nodes are processed in _____ order.

A. ?attribute B. ?element C. ?document D. ?ascending