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

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

2. What is a table space in DB2?

A) A table space is a logical storage grouping that can be composed of one or more containers.
B) A table space is an area of main memory that has been allocated by the database manager for the purpose of caching table and index data as it is read from the physical media.
C) A table space is a DB2 component that manages access to databases.
D) A table space is a space reserved for catalog tables and base table data.

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

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

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

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