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IBM C2090-544 Exam Syllabus Topics:

IBM DB2 9.7 Advanced DBA for LUW Sample Questions:

1. A primary and standby database are enabled for HADR and are in peer state. The HADR_SYNCMODE configuration parameter is set to SYNC. An application connects to the primary database, issues a COMMIT and receives a successful return code in response. How were the log buffers for this unit of work processed?

A) The log buffers were written to the DB2 log files on the primary server and received in the log buffers on the standby database. The return code was then sent to the application.
B) The log buffers were written to the DB2 log files on the primary server, sent to the standby, and written to log files on the standby server. The return code was then sent to the application.
C) The log buffers were written to the DB2 log files on the standby server and held in memory on the primary server. The return code was then sent to the application.
D) The log buffers were written to the DB2 log files on the primary server and sent to TCP/IP send buffer to be shipped to the standby server. The return code was then sent to the application.

2. Given the following table spaces, their associated page size, and number of pages:

Which sets of buffer pools will ensure that all of the data in the table spaces will be fit into memory for optimal data access?

A) IBMDEFAULTBP - 16K page size, 85000 pages
B) IBMDEFAULTBP - 4K page size, 25000 pages BP1 -16K page size, 20000 pages
C) BP1 - page size 8K, 45000 pages
D) BP1 - 4K page size, 30000 pages BP2 - 8K page size, 20000 pages BP3 - 16K page size, 15000 pages

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

4. Which statement about compression and temporary tables is NOT correct?

A) When executing queries that require temporary tables, DB2 considers the storage savings and the impact to query performance to determine whether compression is worthwhile.
B) The minimum size that a table must be before compression is used is larger for temporary tables than for regular tables.
C) The explain facility and the db2pd utility can be used to determine whether a temporary table has been compressed.
D) Compression is only applied to created temporary tables that were defined with the CREATE TEMPORARY TABLE ?COMPRESS YES statement.

5. How can a DBA validate that an existing backup was compressed?

A) Check the header information of the backup file using db2ckbkp.
B) Check the value of the COMPRESS_BACKUP database configuration setting.
C) Check the value of the DB2_COMPRESS_BACKUP registry variable.
D) Check the output from the command LIST HISTORY BACKUP ALL FOR the database.

Solutions: