IBM DB2 C2090-544

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IBM DB2 9.7 Advanced DBA for LUW Sample Questions:

1. Given a newly created database and sufficient memory. If the following statements are successful: CREATE BUFFERPOOL bp1 SIZE 40MB; CREATE BUFFERPOOL bp2 PAGESIZE 16K SIZE 40000; How much memory will be allocated for buffer pools BP1 and BP2?

A) 40MB
B) 680MB
C) 80MB
D) 665MB

2. When an agent that is connected to the database finishes its work of successfully processing a query, what happens to the agent?

A) It is placed in the agent pool if the connection is terminated.
B) It terminates immediately.
C) It automatically releases the database connection and returns to the pool.
D) It remains active as long as the MAXAGENTS setting is not exceeded.

3. Your UNIX system administrator has indicated that there appears to be a lot of I/O wait time associated with your database, which is stored in a 7+p RAID array. An investigation reveals the following information: DB2_PARALLEL_IO=*
Tablespace with ID 7 has a single container and is dedicated to the largest table. It has a page size of 16K, an extent size of 32, and a prefetch size of 64.
Which setting would optimize I/O for the largest table?

A) DB2_PARALLEL_IO=7:32
B) DB2_PARALLEL_IO=7:16
C) DB2_PARALLEL_IO=7:64
D) DB2_PARALLEL_IO=7:7

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

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

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

Solutions:

Question # 1 Answer: D

Question # 2 Answer: A

Question # 3 Answer: D

Question # 4 Answer: B

Question # 5 Answer: D