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000-M87 IBM Netezza Technical Mastery Test v1 We believe in helping our customers achieve their goals. For this reason, we take great care while preparing our Questions and Answers , Core Administration. Our practice tests Administration are prepared with the help of highly professional people from the industry, so we benefit from their vast experience and knowledge.

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QUESTION NO: 1
Which of the following statements is the LEAST accurate?

A. Skew can sometimes cause the optimizer to broadcast data during a query.
B. Skew can occur when more data in a table is on one disk than others due to a sub-optimal distribution key.
C. Skew can occur despite evenly distributed tables when more data ends up on one Snippet Processor while a query is being processed.
D. Skew can cause query performance problems.

Answer: A

QUESTION NO: 2
Which of the following statements is MOST TRUE?

A. Statistics have no impact on ZoneMaps.
B. ZoneMaps are disabled for a table while Statistics are being run.
C. The ability to generate ZoneMaps and generate Statistics can both be assigned to users via permissions.
D. Statistics and ZoneMaps are both used by the optimizer to choose an optimal query plan.

Answer: B

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