IBM DB2 11.1 DBA for LUW 試験
Question No : 1
A DBA has observed that queries executed against SALES table have poor performance. DB2 tools have indicated that the level of data fragmentation in the SALES table is very high. Similar results were detected for indexes defined on the SALES table.
Which of the following commands should be used by the DBA to improve the performance of the queries run against the SALES table?
Question No : 2
Which options are valid for an online reorganization operation?
Question No : 3
Which statement regarding event monitors is TRUE?
Question No : 4
Which command can be used to view the configured global registry settings for all installed DB2 copies found on a Linux server?
Question No : 5
Which of the following commands will list all of the disk configurations of the file system DATAFS in a DB2 pureScale cluster?
Question No : 6
Which statement about label-based access control (LBAC) is TRUE?
Question No : 7
Which security mechanism is responsible for verifying that users are indeed who the claim to be?
Question No : 8
Automatic space reclamation for column-organized tables can be accomplished in which of the following scenarios?
Question No : 9
If Secure Sockets Layer is a requirement, which of the following parameters must be set to encrypt data in transit?
Question No : 10
If the following SQL statements are executed:
CREATE DATABASE testdb AUTOMATIC STORAGE NO;
CONNECT TO testdb;
CREATE STOGROUP sg1 ON ‘/data1’;
CREATE STOGROUP ibmstogroup ON ‘/data2’;
CREATE STOGROUP sg2 ON ‘/data3’;
Which storage group is the default storage group for the TESTDB database?
Question No : 11
The DBA has observed that queries executed against SALES table have poor performance. SALES is a compressed table and recently there have been a lot of rows inserted and modified in that table. The DBA has detected that lower performance may be the result of sub-optimal compression dictionary for that table.
Which of the following commands should be used to resolve the problem without preventing users from changing data in the SALES table
Question No : 12
A table named MYTABLE contains an XML column and an XML storage object dictionary already exists.
What is the effect of enabling compression and then running the command REORG TABLE mytable KEEPDICTIONARY?
Question No : 13
What is an advantage of using range partitioned tables?
Question No : 14
Which statement about NOT ENFORCED unique constraints is TRUE?
Question No : 15
A production database has the following daily midnight backup schedule which includes all table spaces. The database incurs the same volume of daily activity (inserts, updates, and deletes).
Sunday C Delta
Monday C Incremental
Tuesday C Delta
Wednesday C Delta
Thursday C Incremental
Friday C Delta
Saturday C Full
Which day would you expect a RECOVER DATABASE following that day’s backup to take the longest time to complete?