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IBM Certified Database Administrator - IBM IMS Sample Questions:

1. Which of the following options best defines the Label-Based Access Control (LBAC) feature?

A) DB2 LBAC allows you to use labels to reference database objects by a short name instead of the full qualified name.
B) DB2 LBAC monitors table data access and tables modifications made by database users.
C) DB2 LBAC lets you decide exactly who has write/read access to individual rows and columns by comparing the security labels between database objects and users.
D) DB2 LBAC is the DB2 authority in charge of issuing GRANT and REVOKE statements.

2. Which one of the following options is CORRECT?

A) DB2 pureScale transfers log files from a primary database to a standby database.
B) In both DB2 pureScale and HADR environments data is available all the time.
C) In a pureScale environment, the data is available all the time, while in a HADR environment the data is available most of the time.
D) HADR persists data in the cluster caching facilities (CFs).

3. DB2's High Availability and Disaster Recovery (HADR) feature provides a high availability solution for both partial and complete site failures. Given the sentences below, select the CORRECT statement about HADR.

A) HADR protects against data loss by saving data changes from a source database into a local recovery log file.
B) HADR feature is only available for DB2 Advanced Enterprise Edition.
C) HADR protects against data loss by replicating data changes from a backup database file to a standby database.
D) HADR protects against data loss by replicating data changes from a source database, called the primary, to a target database, called the standby.

4. The DB2 Storage Optimization feature allows you to save storage by compressing your database data. Which one of the following types of compression is new in DB2 10?

A) Declared Global Temporary Tables Compression
B) Adaptive Compression
C) Classic Row Compression
D) Temporary Tables Compression

5. Which of the following options best describes the differences between Label Based Access Control (LBAC) and Row and Column Access Control (RCAC)?

A) LBAC allows you to protect access only to rows, while RCAC allows you to protect both rows and columns.
B) RCAC is a fixed label security model designed for the US government while LBAC is a general purpose security model best suited for commercial customers.
C) RCAC returns the data based on what is being asked (data centric), while LBAC returns data based on who is asking what (user centric). Users with DATAACCESS authority are exempt from the Row and Column Access Control rules.
D) With RCAC users do not get an error when accessing protected data, while with LBAC users can get an error if they don't have the necessary credentials to access a LBAC protected column.

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