Yes Prakash,
The NISM link you have posted is the right certification you need.
MCX-SX is good to go, a few our cleints have been trying the new version of ZT(NEST 100.7 ) which will be available on the download section on our website by end of day today..
On the 100.7, if you have enabled mcx-sx, you will be able to start trading currency, f&o and equity on mcx-sx. Trading on equity and f&O on mcx-sx will be free for all our clients for a couple of months..