2014年7月6日星期日

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Code d'Examen: A2090-611
Nom d'Examen: IBM (Assessment: DB2 10.1 DBA for Linux, UNIX, and Windows)
Questions et réponses: 118 Q&As

Code d'Examen: C2090-556
Nom d'Examen: IBM (Informix 11.50 Application Developer)
Questions et réponses: 112 Q&As

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NO.1 A table named SALES was created as follows:
If management wants to use Label-Based Access Control (LBAC) to protect individual rows in the SALES
table, and the security policy needed (SEC_POLICY) has already been created, what must be done to
protect the table as desired?
A. Associate the SEC_POLICY security policy with the SALES table.
B. Add a column with the DB2SECURITYLABEL data type to the SALES table.
C. Add a column with the DB2SECURITYLABEL data type to the SALES table and then associate the
SEC_POLICY security policy with the table.
D. Add a SECURED WITH clause to every column in the SALES table and then associate the
SEC_POLICY security policy with the SALES table.
Answer: C

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NO.2 You have an High Availability and Disaster Recovery (HADR) environment set up and you want to read
from the standby database. What must you do?
A. Assign the value ON to the DB2_HADR_ROS registry variable.
B. Assign the value ON to the DB2_HADR_SNAP registry variable.
C. Execute the STOP HADR command to temporarily break the HADR connection to the standby.
D. Execute the TAKEOVER HADR command to instruct the standby database to takeover as the new
primary database.
Answer: A

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NO.3 The values of the automatic maintenance database configuration parameters for a database named
SAMPLE are as follows:
What commands must be run to enable real-time statistics collection on the SAMPLE database?
A. UPDATE DB CFG FOR sample USING AUTO_RUNSTATS ON; UPDATE DB CFG FOR sample
USING AUTO_STMT_STATS ON;
B. UPDATE DB CFG FOR sample USING AUTO_TBL_MAINT ON; UPDATE DB CFG FOR sample
USING AUTO_RUNSTATS ON; UPDATE DB CFG FOR sample USING AUTO_STMT_STATS ON;
C. UPDATE DB CFG FOR sample USING AUTO_TBL_MAINT ON; UPDATE DB CFG FOR sample
USING AUTO_RUNSTATS ON; UPDATE DB CFG FOR sample USING AUTO_STATS_VIEWS ON; D.
UPDATE DB CFG FOR sample USING AUTO_RUNSTATS ON; UPDATE DB CFG FOR sample USING
AUTO_STATS_VIEWS ON;
Answer: B

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NO.4 Due to a hardware failure, it appears that there may be some corruption in database DB_1 as DB2 is
reporting a "bad page". DB2DART is performed for the entire database and it appears that several bad
pages were detected in table space TBSP_1.
What command can be used to recover the database and repair the corruption in table space TBSP_1?
A. RESTART DATABASE
B. RECOVER DATABASE
C. RESTORE TABLESPACE
D. ROLLFORWARD DATABASE
Answer: B

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NO.5 Where are column mask definitions stored?
A. In the table definition
B. In the system catalog
C. In the table space metadata
D. In the database configuration file
Answer: B

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NO.6 What is the correct procedure for recovering a dropped table when DROPPED TABLE RECOVERY has
been enabled and the database must remain online?
A. Run the RECOVER DATABASE command with the RECOVER DROPPED TABLE option to restore the
database and recover the droppedtable.
B. Run the RECOVER DATABASE command with the RECOVER DROPPED TABLE option to restore the
appropriate table space and recover thedropped table.
C. Restore the database from a backup image that was taken before the table was dropped; run the
ROLLFORWARD DATABASE command withthe RECOVER DROPPED TABLE option to restore the
database and recover the dropped table.
D. Restore the appropriate table space from a backup image that was taken before the table was dropped;
run the ROLLFORWARD DATABASEcommand with the RECOVER DROPPED TABLE option to restore
the appropriate table space and recover the dropped table.
Answer: D

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NO.7 What is the MAX_LOG database configuration parameter used for?
A. To limit how many log files a single transaction can span.
B. To limit the percentage of primary log space a running transaction can consume.
C. To limit the total number of primary and secondary log files a database can consume.
D. To limit the total number of secondary log files a transaction can consume before infinite logging is
enabled.
Answer: B

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NO.8 If a single node database is actively being used by applications when a power failure occurs, what
method is used to bring the database back to a consistent state once power has been restored.?
A. Crash recovery
B. Version recovery
C. Disaster recovery
D. Roll-forward recovery
Answer: A

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