IBM IBM Information Management P2090-054

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IBM Information Management DB2 10.5 pureScale Technical Mastery Test v3 認定 P2090-054 試験問題:

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 by DB2 to transfer data when packets collide.
C) Tiebreaker is used to determine which half of the DB2 pureScale instance should remain online upon a communication failure.
D) Tiebreaker is used to determine which clients are accessing the data on the storage.

2. Where is data stored in a typical DB2 pureScale environment?

A) Data is permanently stored in the cluster caching facility.
B) In a shared storage accessible by all members.
C) Data is split among both, members and a shared storage.
D) All members hold a local data partition of the database.

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

A) 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.
B) 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.
C) 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.
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.

4. Which of the following options justifies why you should be actively monitoring buffer pool hit ratios on your DB2 pureScale environment?

A) Attaining high local buffer pool (LBP) and global buffer pool (GBP) hit ratios are in general an indication of overall good performance as more pages are found in memory than having to fetch from I/O.
B) Attaining low local buffer pool (LBP) and global buffer pool (GBP) hit ratios are in general an indication of overall good performance as more pages are found in memory than having to fetch from I/O.
C) High local buffer pool (LBP) hit ratios are the only important metric that must be monitored since it indicates that there are a higher number of pages fetched from physical storage than from the local buffer pool.
D) Low local buffer pool (LBP) hit ratios are the only important metric that must be monitored since it indicates that there are a higher number pages fetched directly from physical storage than from the local buffer pool.

5. Consider a scenario where your DB2 pureScale cluster caching facilities are in PEER state. What would be the state of the secondary cluster caching facility upon failure of the primary cluster caching facility and a successful takeover?

A) PRIMARY
B) NEW_PRIMARY
C) PEER
D) ERROR

質問と回答：