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IBM Information Management DB2 10 Technical Mastery Test v3 Sample Questions:

1. Which of the following options does NOT describe a benefit of DB2's Row Compression?

A) Compression allows you to retrieve the same amount of data using fewer disk operations (I/O).
B) Compression allows you to store the same amount of data in less space, which can significantly save storage costs.
C) Compression allows you to cache more data in the buffer pools using the same amount of space.
D) Compression allows you to reduce CPU workload because there is less data to process.

2. Which one of the following statements is TRUE about DB2 Workload Management (WLM)?

A) DB2 Workload Management allows you to assign resources to different workloads, which leads to a stable and predictable execution environment.
B) DB2 Workload Management guarantees the availability of data by replicating it to a stand-by server.
C) DB2 Workload Management can be used to schedule maintenance tasks such as BACKUPs, REORGs, or RUSTATS.
D) DB2 Workload Management requires several application changes in order to make the application aware of the WLM feature.

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

A) 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.
B) LBAC allows you to protect access only to rows, while RCAC allows you to protect both rows and columns.
C) 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.
D) 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.

4. Which of the following is TRUE about PL/SQL support in DB2?

A) PL/SQL support is only enabled when using federation to access other vendor databases.
B) The DB2 compiler can process PL/SQL statements and create the required objects in the database. The PL/SQL support is enabled by setting the DB2_COMPATIBILITY_VECTOR registry variable.
C) DB2 requires third party software to execute PL/SQL statements.
D) You can only execute PL/SQL statements using the CLPPIus interface.

Solutions: