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**** SAMPLE IBM PureData System for Analytics v7.0 2021 Dumps ****

                  A. A power supply has failed.
                  B. A switch has been rebooted.
                  C. A SAS cable fails or is disconnected.
                  D. A chassis or fabric switch port is in a down state for longer than the defined
                  Answer: A
                  QUESTION: 120
                  What is required to troubleshoot a query?
                  A. nzevents and the pg.log.
                  B. nzsql and the ODBC config.
                  C. nzinventory and the dbos.log.
                  D. nzdumpschema and the execution plan.
                  Answer: D
                  QUESTION: 121
                  When is the ToplogyImbalance event triggered?
                  A. When a SAS switch has failed.
                  B. When the path the path between an S-Blade and its disks has failed.
                  C. When a disk enclosure's voltage sensor is reading outside the nominal range.
                  D. When an S-Blade has ownership of more dataslices than is optimal (usually
                  following a disk replacement).
                  Answer: D
                  QUESTION: 122
                  Which piece of information is NOT gathered  as part of the statistical information
                  when generate statistics is run on a table?
                  A. The number of rows in the table.
                  B. The number of updated rows in the table.
                  C. The minimum and maximum value in each column.
                  D. The number of unique or distinct values in each column.
                  Answer: B
                  QUESTION: 123
                  Which two statistical data points are automatically updated when performing an
                  INSERT on a table? (Choose two.)
                  A. The number of rows in the table.
                  B. The column histogram statistics.
                  C. The number of NULLs in each column.
                  D. The number of unique values in each column.
                  E. The minimum and maximum column value information (excluding text columns).
                  Answer: A, E
                  QUESTION: 124
                  How does the PureData System for Analytics utilize the distribution key to store
                  records on disk?
                  A. System assigns records to a FPGA based on their distribution key value.
                  B. System assigns records to the host based on their distribution key value.
                  C. System assigns records to a logical data slice based on their distribution key value.
                  D. System assigns records to a Netezza Database Accelerator based on their
                  distribution key value.
                  Answer: C
                  QUESTION: 125
                  What should be considered when you are asked to select the distribution key columns
                  for a very large fact table?
                  A. As many columns as possible.
                  B. Columns that contain many nulls.
                  C. Columns that contain few unique values.
                  D. Columns used to join to other large tables.
                  Answer: D
                  QUESTION: 126
                  A table, TableA has one column, ColumnA. The following query can be used to
                  determine the skew of Table A.
                  A. Select distinct (ColumnA) from TableA;
                  B. Select distinct(datasliceid) from TableA;
                  C. Select datasliceid, count(*) from TableA group by 1 order by 2;
                  D. Select ColumnA, count(*) from TableA group by ColumnA order by 2;
                  Answer: C
                  QUESTION: 127
                  Which statement is true?
                  A. All user space is available for database expansion.
                  B. Each database is assigned it's own section of disk space.
                  C. When creating the database you can specify which disks to use.
                  D. When you create a database you can set the maximum space it is allowed to use.
                  Answer: A
                  QUESTION: 128
                  When a poor choice of distribution key is made, what is the impact to storage
                  A. Data is likely to negatively affect views.
                  B. Data is likely to negatively affect compression.
                  C. Data is likely to generate duplicate sequence values.
                  D. Data is likely to be unevenly spread across the system.
                  Answer: D
                  QUESTION: 129
                  Which statement is true about optimizer settings?
                  A. They can be set system wide only.
                  B. They can be set at the database level only.
                  C. They can be set at the session and at the group level.
                  D. They can be set system wide and at the session level.
                  Answer: D
                  QUESTION: 130
                  Which statement about the GROOM TABLE feature is true?
                  A. GROOM TABLE requires space to make a complete copy of the table.
                  B. GROOM TABLE only operates on tables that include an ORGANIZE ON clause.
                  C. GROOM TABLE prevents nzload from adding data while groom is in progress.
                  D. GROOM TABLE allows UPDATE, DELETE, and INSERT operations to occur
                  while groom is in progress.
                  Answer: D
                  QUESTION: 131
                  After performing a groom on a clustered base table, which statement is true?
                  A. The table is redistributed on the ORGANIZE ON clause.
                  B. The table is reorganized on the ORGANIZE ON clause.
                  C. The table is reorganized on the DISTRIBUTE ON clause.
                  D. The table is redistributed on the DISTRIBUTE ON clause.
                  Answer: B
                  QUESTION: 132
                  What are two considerations for usage of materialized views? (Choose two)
                  A. Materialized views are not supported.
                  B. Materialized views are logical entities.
                  C. Materialized views may improve query performance.
                  D. Materialized views are the same as database views.
                  E. Materialized views are considered for usage by the Optimizer.
                  Answer: C, E



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