最新のP2090-018問題集で試験を準備する

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.

Which one of the following options is CORRECT about Temporal Tables?

• A. System-period temporal tables combine the historical tracking of an Application-period temporal table with the time-specific data storage capabilities of a bitemporal table. They are used to keep user-based period information as well as system-based historical information.
• B. Application-period temporal tables combine the historical tracking of a system-period temporal table with the time-specific data storage capabilities of a bitemporal table. They are used to keep user-based period information as well as system-based historical information.
• C. Application-period temporal tables are used to keep historical versions of records in a table. They use a history table to transparently store updated and deleted data rows.
• D. System-period temporal tables are used to keep historical versions of records in a table. They use a history table to transparently store updated and deleted data rows.

Which one of the following options is FALSE about DB2's Multi-Temperature Data Storage capability?

• A. Multi-temperature data management best practices recommend that cold data should be stored in faster devices in order to maximize overall system performance.
• B. Multi-temperature data management integrates with DB2's Workload Manager feature to let you prioritize your workloads based on the data being accessed.
• C. You can use storage groups to implement multi-temperature data management in DB2.
• D. Multi-temperature data management reduces the total cost of ownership by allowing efficient deployment of storage hardware with minimal administrative overhead.

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