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IBM Assessment: DB2 9.7 Advanced DBA for LUW Sample Questions:

1. Which factor should influence your selection of distribution key(s)?

A) The distribution key(s) should include the most frequently joined column(s).
B) The distribution key(s) should include column(s) with the smallest number of distinct values.
C) The distribution key(s) should include the longest column(s).
D) The distribution key(s) should include the most frequently accessed XML column(s).

2. If instance DB2INST1 is created and its authentication type is set to KRB_SERVER_ENCRYPT, which statement is true?

A) Databases created in DB2INST1 will use KERBEROS authentication if SERVER_ENCRYPT authentication is not available.
B) Databases created in DB2INST1 will use SERVER_ENCRYPT authentication if KERBEROS authentication is not available.
C) Client connections from Windows machines to databases on DB2INST1 will flow clear text passwords.
D) Client connections to databases on DB2INST1 will fail unless they are attempted through an LDAP connection.

3. What is required to successfully use the check backup utility (db2ckbkp)?

A) system administrator authority
B) system maintenance authority
C) read permission on the database
D) read permission on the backup image

4. Table TAB1 was created using the following statement:
CREATE TABLE tab1 (c1 INT, c2 INT, c3 INT, c4 INT, c5 INT);
If column C1 is unique and queries typically access columns C1, C2 and C3 together, which statement(s) will create index(es) that will provide optimal query performance?

A) CREATE UNIQUE INDEX xtab1 ON tab1 (c2) INCLUDE (c1, c3);
B) CREATE UNIQUE INDEX xtab1 ON tab1 (c1) INCLUDE (c2, c3);
C) CREATE UNIQUE INDEX xtab1 ON tab1 (c1); CREATE INDEX xtab2 ON tab1 (c2) INCLUDE (c3);
D) CREATE UNIQUE INDEX xtab1 ON tab1 (c3, c2, c1);

5. Which command will prevent prefetching during crash recovery?

A) db2set DB2_RECOVERY_PREFETCHING=NO
B) db2set DB2_AVOID_PREFETCH=ON
C) db2set DB2_RECOVERY_PREFETCHING=YES
D) db2set DB2_AVOID_PREFETCH=OFF

Solutions: