Hope all are good my question is I have attended offical training of Vmware 5.5 & 6 but never appeared in exam .
Now my requirement is to certify for VMware VCP DCV or NSX certification do i need re-attend training or my attendance certificate is enough
to appear in exam
Regarding your question, i found a Q&A section at the vmware certification portal:
Do i have to take the exam within a certain time period after taking the qualifying course?
No. There is no set time frame for taking the exam after attending the class, however, be sure to take the exam before it has been retired.
I think you don't have to re-attend to any class. But this is my personal opinion, not an official one.