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IBM PureData System for Analytics Technical Mastery Test v1 Sample Questions:

1. Where are the database log files located?

A) /nz/kit/log
B) /usr/local
C) /var/log
D) The SYSTEM database

2. Using a date column as a distribution key may distribute rows evenly across dataslices, why is this a poor choice of a distribution key?

A) Queries on date range will utilize only host processing.
B) Queries on the table will invoke compression.
C) Queries on date range may involve processing skew.
D) Queries on the table will invoke compression on the date columns.

3. A table, TableA has one column, ColumnA. Thefollowing query can be used to determine the skew of Table A.

A) Select ColumnA, count(*) from TableA group by ColumnA order by 2;
B) Select datasliceid, count(*) from TableA group by 1 order by 2;
C) Select distinct(datasliceid) from TableA;
D) Select distinct (ColumnA) from TableA;

4. Which statement is true regarding the compress engine?

A) Data automatically gets compressed.
B) Columns to be compressed must be defined.
C) The nzcompress utility must be run to compress thedatabase.
D) The nzcompress utility must be run to compress the table.

5. The primary copy of a dataslice is spread across how many disks?

A) 1.
B) 12.
C) 2.
D) 4.

Solutions: