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IBM DB2 10.1 高级管理员技术认证考题

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C2090-611 DB2 10.1 DBA for Linux, UNIX, and Windows-IBM技术认证考题，IBM DB2 10.1 高级管理员技术认证考题考取专业技术认让，实现职场价值提升，可以考虑考技术认证。如有需要，自行下载……

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IBM C2090-614

DB2 10.1 Advanced DBA for Linux UNIX and Windows

Version: 4.0

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Topic 1, Volume A

QUESTION NO: 1

Which constraints are used to tell the DB2 Optimizer to consider business rules that are not

enforced by the database manager?

A. Check constraints

B. Default constraints

C. Informational constraints

D. Referential integrity constraints

Answer: C

Explanation:

QUESTION NO: 2

Given the following database design:

A Explain plan shows that a broadcast join is being used by a query that joins the DATE_DIM

dimension table and the SALES fact table. Which action should be performed to improve query

performance?

A. Create a replicated summary table for the SALES table using the table space TS_REPL.

B. Create a replicated summary table for the DATE_DIM table using the table space TS_REPL.

C. Create an index on both the DATE_DIM and the SALES table for the column that is used in the

collocated join.

D. Create a replicated summary table for the SALES table using the table space TS_DIM and

create an index on the DATE_DIM table.

Answer: B

Explanation:

QUESTION NO: 3

Which procedure is used to Explain an SQL statement using information obtained from the

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红颜弹指老，刹那芳华，与其天涯思君，恋恋不舍，心绕不断,莫若相忘于江湖！

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package cache or the package cache event monitor?

A. EXPLAIN_FROM_DATA

B. EXPLAIN_FROM_ACTIVITY

C. EXPLAIN_FROM_SECTION

D. EXPLAIN_FROM_CATALOG

Answer: C

Explanation:

QUESTION NO: 4

Which statement about the initiation of parallel I/O is correct?

A. For list prefetching, each list of data pages is divided into smaller lists according to extent

boundaries and assigned to different I/O servers.

B. For read-ahead prefetching, each list of data pages is divided into smaller lists according to

extent boundaries and assigned to different I/O servers.

C. For sequential prefetching, parallel I/O is initiated when the prefetch size is a multiple of the

extent size for a table space. Each prefetch request is divided into smaller requests and assigned

to different I/O servers.

D. For sequential prefetching, parallel I/O is initiated when the extent size is a multiple of the

prefetch size for a table space. Each prefetch request is divided into smaller requests and

assigned to different I/O servers.

Answer: C

Explanation:

QUESTION NO: 5

The following message is frequently seen in the DB2 Diagnostics Log file (db2diag.log):

MESSAGE : ADM5502W The escalation of "28581" locks on table "TEST.TABLE1" to lock intent

"X" was successful. Which two database configuration parameter settings should be checked?

(Choose two.)

A. LOCKLIST

B. MAXAPPLS

C. MAXLOCKS

D. MAXAGENTS

E. LOCKTIMEOUT

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Answer: A,C

Explanation:

QUESTION NO: 6

Consider the following statement:

Which indexes should be created for optimal query performance?

A. CREATE INDEX emp_idx ON employee (workdept);

CREATE INDEX dept_idx ON department (deptno);

B. CREATE INDEX emp_idx ON employee (workdept) CLUSTER;

CREATE INDEX dept_idx ON department (deptname, deptno);

C. CREATE INDEX emp_idx ON employee (workdept, lastname, job);

CREATE INDEX dept_idx ON department (deptname, deptno);

D. CREATE INDEX emp_idx ON employee (lastname, job, workdept) CLUSTER;

CREATE INDEX dept_idx ON department (deptname);

Answer: C

Explanation:

QUESTION NO: 7

What will occur when a database administrator adds a new automatic storage path to an existing

storage group?

A. New table spaces will start consuming storage on the new path.

B. Existing table spaces will not consume storage on the new path.

C. The storage group will be placed in "Rebalance Pending" mode.

D. DB2 will verify that space is available on the storage path specified.

Answer: B

Explanation:

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红颜弹指老，刹那芳华，与其天涯思君，恋恋不舍，心绕不断,莫若相忘于江湖！

多年 Unix/Linux 经验,丰富 MiddleWare /DataBase 经验,现居广州.

技术博客: http://www.evanjiang.net QQ: 438549233

Skype/MSN:zymh_zy@hotmail.com Mail: zymh_zy@163.com

QUESTION NO: 8

Which monitoring tool can be used to obtain stripe set information for database managed storage

table spaces?

A. The MON_GET_CONTAINER table function.

B. The SNAP_GET_TBSP_PART table function.

C. The SNAPTBSP_RANGE administrative view.

D. The TS_GET_CONTAINER administrative view.

Answer: A

Explanation:

QUESTION NO: 9

Which statement about value compression is correct?

A. To use value compression, you must have a license for the DB2 Storage Optimization Feature.

B. Value compression uses a page-level dictionary-based compression algorithm to compress

data based on repetition of values found in a single column.

C. Value compression involves removing duplicate entries for a value, only storing one copy, and

keeping track of the location of any references to the stored copy.

D. When value compression is used, the byte count of compressed NULLs, zeros, and blanks

might be larger than that of the uncompressed version of the same values.

Answer: C

Explanation:

QUESTION NO: 10

Which statement about compression dictionaries is FALSE?

A. Page-level dictionaries are stored in hidden rows within the table.

B. Table-level dictionaries are stored in hidden rows within the table.

C. Page-level dictionaries are automatically created or recreated by the database manager as

pages are filled.

D. Table-level dictionaries are automatically created or recreated as by the database manager as

pages are filled.

Answer: D

温室小花.技术.博客 –纯粹的 unix 技术博客 http://www.evanjiang.net QQ:3819468

红颜弹指老，刹那芳华，与其天涯思君，恋恋不舍，心绕不断,莫若相忘于江湖！

多年 Unix/Linux 经验,丰富 MiddleWare /DataBase 经验,现居广州.

技术博客: http://www.evanjiang.net QQ: 438549233

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2017-10-22

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