C2090-600 시험 - IBM실제시험문제와 답 - 60문항

Question No : 1

Which is the correct way to back up only metadata about database backups, table space backups, and table load operations for database MYDB?

A.CONNECT TO mydbPRUNE HISTORY TO /outdir
B.db2trc on Cdb mydb Cm “backup,load”run the desired operationsdb2tc dump db2trc.dmpdb2tc format db2tc.dmp db2tc.fmtdb2tc off
C.BACKUP DATABASE mydb NO TABLESPACE TO /outdir
D.db2setDB2_BCKP_PAGE_VERIFICATION=TRUE must be issued first (no instance restart is needed).Run the desired operations.Afterwards, issue db2trc dump <outfile>

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Question No : 2

Which of the following are valid Explain operators? (Choose two.)

A.CTQ
B.XSCAN
C.IXSCAN
D.SELECT
E.COLSCAN

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Question No : 3

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?

A.REORG TABLE sales AND INDEXES ALL; RUNSTATS ON TABLE sales AND INDEXES ALL;
B.REORG TABLE sales INPLACE; REORG INDEXES ALL FOR TABLE sales; RUNSTATS ON TABLE sales AND INDEXES ALL;
C.RUNSTATS ON TABLE sales AND INDEXES ALL; REORGCHK ON TABLE sales;
D.RUNSTATS ON TABLE sales INPLACE AND INDEXES ALL;

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Question No : 4

Which options are valid for an online reorganization operation?

A.FULL and RECLAIM EXTENTS
B.CLASSIC and RECLAIM EXTENTS
C.FULL and CLEANUP OVERFLOWS
D.CLEAN OVERFLOWS and RECLAIM EXTENTS

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Question No : 5

Which statement regarding event monitors is TRUE?

A.Event monitor data can be reviewed while the event monitor is active
B.Event monitors must always be started manually after activating a database
C.Event monitors must write data to .EVT files before the data can be loaded into database tables
D.Event monitors are used to obtain information about how a database system looks at a specific point in time

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Question No : 6

Which command can be used to view the configured global registry settings for all installed DB2 copies found on a Linux server?

A.db2val
B.db2set
C.db2look
D.db2greg

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Question No : 7

Which of the following commands will list all of the disk configurations of the file system DATAFS in a DB2 pureScale cluster?

A.db2cluster Ccfs Clist Cfilesystem datafs
B.db2cluster Ccfs Cdisplay Cfilesystem datafs
C.db2cluster Ccfs Clistconfig Cfilesystem datafs
D.db2cluster Ccfs Cdisplayconfig Cfilesystem datafs

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Question No : 8

Which statement about label-based access control (LBAC) is TRUE?

A.LBAC protection can be applied to a nickname
B.LBAC cannot be used to restrict access to a staging table
C.LBAC cannot be used to restrict access to data of columns and rows in the same table
D.LBAC protection for columns requires a table to contain a column that has a DB2SECURITYLABEL data type

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Question No : 9

Which security mechanism is responsible for verifying that users are indeed who the claim to be?

A.Authentication
B.Roles and privileges
C.Mandatory access control
D.Discretionary access control

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Question No : 10

Automatic space reclamation for column-organized tables can be accomplished in which of the following scenarios?

A.When the registry variableDB2_AUTORECLAIMSPACE=YES
B.After termination all the back-end processes using TERMINATE command
C.After setting the database configuration parameter AUTO_DEL_REC_OBJ to ON
D.When the registry variable DB2_WORKLOAD=ANALYTICS prior to database creation

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Question No : 11

If Secure Sockets Layer is a requirement, which of the following parameters must be set to encrypt data in transit?

A.Set the DB2COMM registry variable to DB2COMM=SSL
B.Set the DB2COMM registry variable to DB2COMM=SSL, TCPIP
C.Set the AUTHENTICATION configuration parameter to DATA_ENCRYPT
D.Set the AUTHENTICATION configuration parameter to SERVER_ENCRYPT

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Question No : 12

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?

A.SG1
B.SG2
C.IBMSTOGROUP
D.IBMDEFAULTTSG

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Question No : 13

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

A.REORG TABLE sales INPLACE RESETDICTIONARY
B.REORG TABLE sales INPLACE REBUILDDICTIONARY
C.REORG TABLE sales ALLOW WRITE ACCESS RESETDICTIONARY
D.REORG TABLE sales ALLOW WRITE ACCESS REBUILDDICTIONARY

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Question No : 14

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?

A.All data, both new and existing, will becompressed.
B.Only new or updated data for XML columns will be compressed.
C.New and existing XML columns will be compressed but other columns remain unchanged.
D.Existing data will remain uncompressed because the RESETDICTIONARY option of the REORG command was not used.

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Question No : 15

What is an advantage of using range partitioned tables?

A.Abilityto run utilities against the partitions in parallel
B.Increased query performance through data partition elimination
C.Block indexes are much smaller than RID indexes, providing better performance
D.Table data is automatically and continuously clustered, requiring minimal reorganization

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IBM C2090-600 시험