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IBM Assessment: DB2 10.1 Advanced DBA for LUW Sample Questions:

1. Which statement about partitioned indexes is FALSE?

A) Each index partition contains references only to data in its corresponding data partition.
B) Both system- and user-generated indexes can be partitioned.
C) When attaching new partitions, the SET INTEGRITY statement must be run before data in the newly attached partition will be reflected in the corresponding partition index.
D) A partitioned index is made up of a set of index partitions, each of which contains the index entries for a single data partition

2. Given the following output:

Which Explain procedure can be used to find the most expensive SQL statement in terms of CPU cost over a period of time?

A) EXPLAIN_FROM_CATALOG
B) EXPLAIN_FROM_DATA
C) EXPLAIN_FROM_ACTIVITY
D) EXPLAIN_FROM_SECTION

3. A query against the system catalog revealed that data for a table named SALES in a partitioned database is distributed as follows:

What can be done to improve the performance of a query that joins SALES and DATE_DIM tables (where SALES is a fact table and DATE_DIM is a dimension table) using the DATE_ID column?

A) Create a replicated table REPL_SALES from the SALES table, refresh REPL_SALES table, create index on DATE_ID column in theREPL_SALES table, and collect statistics on REPL_SALES table.
B) Create a replicated table REPL_DATE_DIM from the DATE_DIM table, refresh REPL_DATE_DIM table, create index on DATE_ID column in theREPL_DATE_DIM table, and collect statistics on REPL_DATE_DIM table.
C) Reload table DATE_DIM and use only one partition with a collocated join to the SALES table using the primary key DATE_ID.
D) Reload table SALES and use only one partition with a collocated join to the DATE_DIM table using the primary key DATE_ID.

4. A table space creation operation was unsuccessful because DB2 failed to allocate a container in a path. Which diagnostic tool can be used to help resolve the problem?

A) db2caem
B) db2dart
C) db2diag
D) db2fmcu

5. Which statement about the initiation of parallel I/O is correct?

A) For list prefetching, each list of data pages is divided into smaller lists according to extent boundaries and assigned to different I/O servers.
B) For sequential prefetching, parallel I/O is initiated when the extent size is a multiple of the prefetch size for a table space. Each prefetch request is divided into smaller requests and assigned to different I/O servers.
C) For read-ahead prefetching, each list of data pages is divided into smaller lists according to extent boundaries and assigned to different I/O servers.
D) For sequential prefetching, parallel I/O is initiated when the prefetch size is a multiple of the extent size for a table space. Each prefetch request is divided into smaller requests and assigned to different I/O servers.

Solutions: