Passing Netezza exam 000-553

Last week I successfully passed netezza exam 000-553, Netezza Software platform v6.0. It was not an easy exam! If you think about taking this exam, you should be aware of the key points below:

• Short Query Bias.
• Physical components and structure of the appliance. You may be asked in every thing; power supply, number of disks, S-blades, SPA, SPUs, disk controllers, host, FPGA .... etc
• Power supply failure effect.
• Query plans and different ways to show the plans.
• nzload and external tables.
• backups and restore to different versions. (e.g. can u restore to an old version).
• autoReplay option.
• nzstate and nzstats.
• location for different system files. Including log and temp.
• Cursors.
• crontab
• zoneMaps
• CTAS
• Data distribution on different data slices.
• Sequence data type.
• Default user group.
• Isolation level.
• Workload management. 
• Cross database access.
• Materialized views.
• Connectivity; focusing on ODBC.
• HA host states (Active & stand by)

That's what I remember now. Please feel free to post your comments if you have a question.
Thnx.