IBM IBM Certifications P2090-054 Questions & Answers

• Question 31:

  What is the purpose of the Self Tuning Memory Manager (STMM) in DB2?

  A. This feature reduces the task of configuring your DB2 server by continuously updating memory configuration parameters, resizing buffer pools, and dynamically determining the total amount of memory to be used by the database.

  B. The purpose of this feature is for the system to deliver to you a report of database tuning recommendations so that you can update the configuration parameters by hand.

  C. This feature detects memory expansion in the database and delivers a warning to the DBA to let them know when the database is nearing a threshold memory allocation limit.

  D. STMM allows DBAs to inspect the current memory allocation by buffer pools.

  Correct Answer: A

• Question 32:

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

  A. Temporal tables are complex to maintain and require major application changes.

  B. Temporal tables require constant changes to the operating system timestamp in order to navigate through time in the database.

  C. Temporal tables are used to model data in the past and present. They cannot be used to model data in the future.

  D. Temporal tables are used to model data in the past, present, and future.

  Correct Answer: D

• Question 33:

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

  A. You can use storage groups to implement multi-temperature data management in DB2.

  B. Multi-temperature data management reduces the total cost of ownership by allowing efficient deployment of storage hardware with minimal administrative overhead.

  C. Multi-temperature data management integrates with DB2's Workload Manager feature to let you prioritize your workloads based on the data being accessed.

  D. Multi-temperature data management best practices recommend that cold data should be stored in faster devices in order to maximize overall system performance.

  Correct Answer: D

• Question 34:

  Which one of the following options contains the minimum configuration for a DB2 pureScale cluster capable of recovering from a member failure?

  A. 1 cluster caching facility and 1 DB2 members.

  B. 2 cluster caching facilities and 1 DB2 member.

  C. 1 cluster caching facility and 2 DB2 members.

  D. 2 cluster caching facilities and 2 DB2 members.

  Correct Answer: C

• Question 35:

  What is a DB2 instance?

  A. A DB2 instance is just another name for DB2 Database.

  B. A DB2 instance is a copy of a database that can be accessed standalone from the database server.

  C. A DB2 instance is a logical database manager environment where you catalog databases and set configuration parameters.

  D. DB2 does not use instances. It requires only databases to operate.

  Correct Answer: C

• Question 36:

  Which of the following options best defines the Label-Based Access Control (LBAC) feature?

  A. DB2 LBAC allows you to use labels to reference database objects by a short name instead of the full qualified name.

  B. DB2 LBAC lets you decide exactly who has write/read access to individual rows and columns by comparing the security labels between database objects and users.

  C. DB2 LBAC monitors table data access and tables modifications made by database users.

  D. DB2 LBAC is the DB2 authority in charge of issuing GRANT and REVOKE statements.

  Correct Answer: B

• Question 37:

  Consider the scenario where the primary cluster caching facility failed while the secondary cluster caching facility was in CATCHUP state. Which of the following outcomes is CORRECT?

  A. The DB2 pureScale cluster would freeze. A database administrator must restore the database from a previous backup and then roll forward the database to a point in time before the freeze.

  B. DB2 cluster services will initiate a group restart with the former secondary cluster caching facility becoming the primary CF for the cluster. The instance will be temporarily unavailable while the services restart automatically

  C. The instance would be brought down. DB2 cluster services then restarts only the secondary cluster caching facility now in the primary role.

  D. The takeover operation succeeds and the secondary cluster caching facility will be promoted to primary. The cluster would continue processing incoming read-only transactions.

  Correct Answer: B

• Question 38:

  Where is data stored in a typical DB2 pureScale environment?

  A. All members hold a local data partition of the database.

  B. Data is split among both, members and a shared storage.

  C. In a shared storage accessible by all members.

  D. Data is permanently stored in the cluster caching facility.

  Correct Answer: C

• Question 39:

  A database administrator retrieved the following status from the DB2 members in a DB2 pureScale environment: Which of the following options will start ONLY the member hosted in NODE102?

  

  A. db2start member on NODE102

  B. db2start NODE102

  C. db2start member 1

  D. db2cluster -node node102 -exit - maintenance

  Correct Answer: C

• Question 40:

  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. ERROR

  B. PEER

  C. PRIMARY

  D. NEW_PRIMARY

  Correct Answer: C