for node names, keep adding to xpath
from x.nodes('options/node()[local-name()!="SourceID"][local-name()!="FieldID"]') n(c)
for attributes, use the null + value test
Load balancing is the method of dividing the total amount of work performed by one computer between two or more computers. Its aim is to get more work done in the same amount of time, ensuring that all the users get served faster.