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IBM Assessment: DB2 9.7 Advanced DBA for LUW Sample Questions:

1. A DBA migrating an existing database to DB2 9.7 wants to allow the primary and secondary recovery logs to be used with non-buffered IO. Which statement is true?

A) The DB2_LOGGER_AUTO_BUFFERED registry variable must be set to YES.
B) The DB2_LOGGER_NON_BUFFERED_IO registry variable must be set to AUTO.
C) This behavior is automatically enabled by default.
D) The DB2_LOGGER_BUFFERED registry variable must be set to OFF.

2. What steps, in the correct order, are performed by the SQL and XQuery compilers to generate executable code for non-federated queries?

A) check semantics; parse query; build access plan; pushdown predicates; execute access plan
B) check semantics; parse query; rewrite query; build access plan
C) parse query; check semantics; rewrite query; build access plan
D) parse query; rewrite query; check semantics; pushdown predicates; execute access plan

3. Given the following table definition in a multi-partitioned database:

Which column(s) will be chosen by DB2 as a distribution key (partitioning key)?

A) SS_ID, EMP_ID, and NAME
B) NAME
C) SS_ID
D) EMP_ID

4. A DBA has established connectivity to a DB2 for z/OS database and is exploiting a System z sysplex for load balancing and fault-tolerance. Which series of statements and commands can be issued to ensure that agents remain allocated to help maintain the sysplex server list?

A) UPDATE DBM CFG USING NUM_POOLAGENTS 0;
db2stop;
db2start;
B) UPDATE DBM CFG USING NUM_POOLAGENTS 200;
db2stop;
db2start;
C) UPDATE DBM CFG USING NUM_INITAGENTS 200;
db2stop;
db2start;
D) UPDATE DBM CFG USING NUM_INITAGENTS 0;
db2stop;
db2start;

5. A table named TAB_A was created with the COMPRESS YES option specified and populated with 100,000 rows. If a DBA wants to create an index on table TAB_A, which statement is true?

A) In order for the index to be compressed, it must be enabled for compression by specifying the COMPRESS YES option in the CREATE INDEX statement used to create it; however, the index will not be compressed until the ALTER INDEX command is used to create an index compression dictionary.
B) The index will automatically be compressed since the table it is associated with is compressed; the ALTER INDEX command does not have to be executed.
C) The index will automatically be enabled for compression because the associated table is compressed; however, the index will not be compressed until it is REORGed.
D) In order for the index to be compressed, it must be enabled for compression by specifying the COMPRESS YES option with the CREATE INDEX statement that is used to create it.

Solutions: