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最新的 IBM Information Management P2090-054 免費考試真題:

1. What is the purpose of the tiebreaker disk in a DB2 pureScale environment?

A) Tiebreaker is used to determine which databases are currently active and can be accessed by the clients directly in graphical user interface (GUI).
B) Tiebreaker is used to determine which half of the DB2 pureScale instance should remain online upon a communication failure.
C) Tiebreaker is used by DB2 to transfer data when packets collide.
D) Tiebreaker is used to determine which clients are accessing the data on the storage.

2. Which of the following options describes correct cluster caching facility states when both primary and secondary cluster caching facilities are in sync?

A) primary: PEER secondary: CATCHUP
B) primary: PRIMARY secondary: SECONDARY
C) primary: SYNC secondary: SYNC
D) primary: PRIMARY secondary: PEER

3. What is a table space in DB2?

A) A table space is a space reserved for catalog tables and base table data.
B) A table space is a DB2 component that manages access to databases.
C) 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.
D) A table space is a logical storage grouping that can be composed of one or more containers.

4. 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.

5. Consider the scenario where two members, "M1" and "M2", intend to update two different rows on the same data page: 1."M1" is doing an update on row R1 within a data page. It is granted exclusive access to the page containing that row of data. 2."M2" requires an exclusive lock to the same page to update row R2. It passes this request to the cluster caching facility. "M2" waits while the request is processed. 3.The cluster caching facility sees that member "M1" already has an exclusive access to the page. It issues a request to "M1" for the page. In the meantime, "M2" waits. 4."M1" processes the request by writing the page back to the global buffer pool and then releasing the page lock. ("M1" retains any row or table locks it might have had). 5.The cluster caching facility grants "M2" access to the page. "M2" reads the page from the global buffer pool to perform whatever operations for which the page is needed. Which of the following DB2 pureScale monitoring elements can be used to monitor the above scenario?

A) Log Retain.
B) Page reclaiming.
C) Lock contention.
D) Lock escalation.

問題與答案：