Download IBM DB2 11.1 DBA for LUW.C2090-600.PassGuide.2019-02-26.60q.vcex

Vendor: IBM
Exam Code: C2090-600
Exam Name: IBM DB2 11.1 DBA for LUW
Date: Feb 26, 2019
File Size: 174 KB
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Demo Questions

Question 1
Assuming no database connections exist, which of the following will dynamically change the LOCKLIST database configuration parameter for a database named SAMPLE to AUTOMATIC?
  1. UPDATE DB CFG FOR sample USING LOOCKLIST AUTOMATIC IMMEDIATE
  2. UPDATE DB CFG FOR sample USING LOOCKLIST 8192 AUTOMATIC IMMEDIATE
  3. CONNECT TO sample; 
    UPDATE DB CFG FOR sample USING LOCKLIST AUTOMATIC IMMEDIATE; 
    CONNECT RESET;
  4. ATTACH TO db2inst1; 
    UPDATE DB CFG FOR sample USING LOCKLIST AUTOMATIC; 
    DETACH;
Correct answer: C
Question 2
Which two tasks must be done to read data directly from IBM Softlayer Object Storage and insert it into a DB2 database? (Choose two.)
  1. Catalog a storage access alias in the DB2 database
  2. Create an FTP account on IBM Softlayer Object Storage
  3. Use the DB2REMOTE parameter of the LOAD command
  4. Establish a remote connection to IBM Softlayer Object Storage using DB2 Connect
  5. Create a local disk alias at the database server operating system level that points to IBM Softlayer Object Storage
Correct answer: AC
Question 3
Which of the following statements about compression for BLU MPP tables is TRUE?
  1. Compression must be explicitly enabled for BLU MPP tables
  2. Compression requires decompression to evaluate partition joins
  3. Unique compression dictionaries are generated for each partition
  4. Each table has a single compression dictionary that gets replicated across all partitions
Correct answer: D
Explanation:
Reference: http://www.idug.org/p/bl/et/blogaid=503
Reference: http://www.idug.org/p/bl/et/blogaid=503
Question 4
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 – Delta 
Monday – Incremental 
Tuesday – Delta 
Wednesday – Delta 
Thursday – Incremental 
Friday – Delta 
Saturday – Full 
Which day would you expect a RECOVER DATABASE following that day’s backup to take the longest time to complete?
  1. Friday
  2. Monday
  3. Saturday
  4. Wednesday
Correct answer: A
Question 5
Which statement about NOT ENFORCED unique constraints is TRUE?
  1. NOT ENFORCED unique constraints can not be defined on primary key columns
  2. The query optimizer will consider a NOT ENFORCED unique constraint when selecting an optimal data access plan
  3. When attempting to insert data that does not conform to a NOT ENFORCED unique constraint, a warning will be returned
  4. Storage requirements for a NOT ENFORCED unique constraint are no different than the storage requirements for a similar unique index
Correct answer: A
Question 6
What is an advantage of using range partitioned tables?
  1. Ability to run utilities against the partitions in parallel
  2. Increased query performance through data partition elimination
  3. Block indexes are much smaller than RID indexes, providing better performance
  4. Table data is automatically and continuously clustered, requiring minimal reorganization
Correct answer: B
Explanation:
Reference: https://www.ibm.com/developerworks/data/library/techarticle/dm-0605ahuja2/#query
Reference: https://www.ibm.com/developerworks/data/library/techarticle/dm-0605ahuja2/#query
Question 7
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?
  1. All data, both new and existing, will be compressed.
  2. Only new or updated data for XML columns will be compressed.
  3. New and existing XML columns will be compressed but other columns remain unchanged.
  4. Existing data will remain uncompressed because the RESETDICTIONARY option of the REORG command was not used.
Correct answer: D
Question 8
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
  1. REORG TABLE sales INPLACE RESETDICTIONARY
  2. REORG TABLE sales INPLACE REBUILDDICTIONARY
  3. REORG TABLE sales ALLOW WRITE ACCESS RESETDICTIONARY
  4. REORG TABLE sales ALLOW WRITE ACCESS REBUILDDICTIONARY
Correct answer: C
Question 9
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?
  1. SG1
  2. SG2
  3. IBMSTOGROUP
  4. IBMDEFAULTTSG
Correct answer: C
Explanation:
Reference: https://www.tutorialspoint.com/db2/db2_storagegroups.htm
Reference: https://www.tutorialspoint.com/db2/db2_storagegroups.htm
Question 10
If Secure Sockets Layer is a requirement, which of the following parameters must be set to encrypt data in transit?
  1. Set the DB2COMM registry variable to DB2COMM=SSL
  2. Set the DB2COMM registry variable to DB2COMM=SSL, TCPIP
  3. Set the AUTHENTICATION configuration parameter to DATA_ENCRYPT
  4. Set the AUTHENTICATION configuration parameter to SERVER_ENCRYPT
Correct answer: B
Explanation:
Reference: https://www.ibm.com/developerworks/data/library/techarticle/dm-1306securesocketlayers/
Reference: https://www.ibm.com/developerworks/data/library/techarticle/dm-1306securesocketlayers/
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