Hi Rita,
Sorry for answering so late but I was gone for a while.
The exam has 43 questions and it's like any other unix exam,you can choose one or more question and you can review them any time.
You must know the syntax for basic commands like save,savegrp,recover,nsrim,mminfo,nsrls,nsrinfo.
The definition of the client file index and media database,the daemons running on a networker server and a client.To configure a jukebox and a standalone device,the menus from nwadmin,to know what each of them includes and what can you do with them.
For example from where you can start the backup,from the Group resource,from where can you change the shedule for a backup,from Schedules resource.So it's better review what each Resource is doing from nwadmin.
You need to know the browse and retention policies and when a volume becomes recyclable.
Learn how you can recover a server ,the CFI for the server and the media database for the server.The steps involved in recovering client file index and media database.
I hope it helps.Let me know if you have any other question.
Good luck,
Alina