2014年9月18日星期四

Meilleur IBM C2090-611 C2090-919 A4040-123 test formation guide

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Code d'Examen: C2090-611
Nom d'Examen: IBM (DB2 10.1 DBA for Linux, UNIX, and Windows)
Questions et réponses: 118 Q&As

Code d'Examen: C2090-919
Nom d'Examen: IBM (Informix 11.70 System Administrator)
Questions et réponses: 118 Q&As

Code d'Examen: A4040-123
Nom d'Examen: IBM (Assessment: Power Systems with POWER7 and AIX & Linux Sales Skills -v2)
Questions et réponses: 81 Q&As

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NO.1 What unit of measurement is used to represent the cumulative total cost of a node in a Visual Explain
access plan diagram?
A. CPU cycles
B. Elapsed time, in milliseconds
C. Processing instructions performed
D. Timerons
Answer: D

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NO.2 Which statement is correct when describing trusted contexts?
A. A trusted context defines a trust relationship for a connection between the database and an external
entity.
B. A trusted context promotes the authorization level of the connection initiator and grants them DBADM
authority.
C. A trusted context defines a trust relationship between a user and a table allowing that user additional
capabilities.
D. A trusted context gives the database connection the ability to bypass auditing since authentication has
already occurred.
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 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.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 Which command can be used to restore a corrupted database using only the recovery history file?
A. RESTART DATABASE
B. RECOVER DATABASE
C. RESTORE DATABASE
D. ROLLFORWARD DATABASE
Answer: B

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NO.7 If the current value for self-tuning memory is: Self Tuning Memory (SELF_TUNING_MEM) = ON
(Inactive) Which statement is true?
A. Self-tuning is occurring only on the instance memory area.
B. The memory tuner is actively tuning the memory on the system.
C. Self-tuning is not occurring because it is waiting for the database to be recycled.
D. Self-tuning is not occurring because there are less than two memory consumers enabled.
Answer: D

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NO.8 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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