Hi Kavitha,
I am too preparing for SCDJWS since last 2-3 months and would like to suggest you following material for the preparation:-
1. RMH - This was really amazing book, although this is for SCDJWS 1.4 but it is must for following topic as you will find it really good to start with-
a. XML Namespace
b. XML Schema
c. WSDL
d. UDDI
e. SAAJ
f. JAXP
g. JAXR
2. For rest of the topics like JAXB, WS , WSIT, JSON, Security go theough Mikali Zaikin study notes -
http://java.boot.by/scdjws5-guide/
OR you can follow IVan's study material- both are good.
3. For Mock Tests-
i> xyz.com
ii> SUN proficiency test available at sun site
iii> Wizlab trail test at their site.
4. Last but not the least do go theough BP 1.0 for reading specification about XML, SOAP, WSDL and UDDI, because you will find many question regarding these specifications.
ALL the Best.