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

1. When the DBA chooses the dimensions for a multi-dimensional clustering (MDC) table, which two characteristics should be considered? (Choose two.)

A) the combined cardinality of the candidate columns
B) prefetch size
C) extent size
D) the query transaction rate
E) numeric data versus character data

2. If LOGSECOND=-1 then which of the following statements is true?

A) You must configure the OVERFLOWLOGPATH configuration parameter if your active log path is not on a raw device.
B) An infinite number of overflow log files will be used with archival logging.
C) You still use LOGPRIMARY and LOGFILSIZ configuration parameters to specify how many log files the database manager should keep in the active log path.
D) The database will reserve active log space for transactions that may need to roll back and write log records.

3. Table T1 was created by executing the following statement:

Immediately after creation, table T1 was populated with 10 rows. Later, user USER1 ran an application that inserted 100,000 rows into table T1. The following query is frequently ran against the T1 table:
SELECT deptno, empno, deptname FROM t1 WHERE deptno = 'EN' AND empno = '123' Assuming current statics exist for the table and index, which index will provide optimal performance for this query?

A) CREATE INDEX idx1 ON t1 (deptno, empno)
B) CREATE INDEX idx1 ON t1 (deptno, empno) INCLUDE (deptname)
C) CREATE INDEX idx1 ON t1 (deptno) INCLUDE (empno)
D) CREATE INDEX idx1 ON t1 (deptno)

4. Which description is correct when discussing the DB2_MEM_TUNING_RANGE registry variable?

A) It is recommended that this variable be used to set the maximum percentage of memory that DB2 can use on the system.
B) It is recommended to set this variable only when using STMM, when DATABASE_MEMORY is set to AUTOMATIC, and if insufficient system memory problems are occurring.
C) It is recommended to set this variable only when the Self-Tuning Memory Manager (STMM) is disabled.
D) It is recommended that this variable be enabled at all times in order to prevent DB2 from taking too much physical memory.

5. What new security authorities have been introduced in DB2 V9.7?

A) WLMADM, SQLADM, EXPLAIN
B) SECADMIN, ACCESSCTRL, SQLADM
C) WLMADM, ACCESSCTRL, SECADMIN
D) EXPLAIN, SECADMIN, DATAACCESS

Solutions: