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IBM P2090-018 Exam Syllabus Topics:

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

1. Which of the following options is TRUE about the Row and Column Access Control (RCAC) feature?

A) In order to take advantage of this feature, applications must be changed to work with the RCAC feature.
B) Users with DATAACCESS authority are exempt from the Row and Column Access Control rules.
C) Table data is protected against direct access to the table. Access using views is unrestricted.
D) Row and column level access control allows the creation of column masks that can control what column values a user is permitted to see.

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

A) 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.
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 is a fixed label security model designed for the US government while LBAC is a general purpose security model best suited for commercial customers.
D) LBAC allows you to protect access only to rows, while RCAC allows you to protect both rows and columns.

3. What is a buffer pool in DB2?

A) A buffer pool is a pool of connection buffers that increases performance of applications connecting to the DB2 server.
B) A buffer pool 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 buffer pool is a DB2 component that manages connections to databases.
D) A buffer pool is a logical storage grouping composed of one or more containers.

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

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

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