hi neha !
me too preparing for the same..
As i heared from various frens, discussions forums and certification requirements there is considerable waitage on xlink and xpointer.
Though I dont know how much is the waitage its better to go thr them becaz ... what i found is lot of people finding it difficult to clear or to make a good score so just have a look at them and let me know if someone tells u about the waitage on all those stuff and even if u get some articles on it.
Let me know when r u appearing for the exam..
njoy
KIT
Badal
www.necoinfotech.com