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IBM C2090-548 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: IMS Database Design and Implementation | 20% | - Database definition and DBD generation - Secondary index implementation - Logical relationships and physical pairing - Segment and field design |
| Topic 2: IMS Database Management Concepts | 15% | - Database organization types (HDAM, HIDAM, PHDAM, PHIDAM) - IMS hierarchical database model - IMS architecture and components |
| Topic 3: IMS Utilities and Troubleshooting | 15% | - Trace and diagnostic tools - Database utilities (DFSURGU0, DFSUDMP0, etc.) - Common operational issues and resolution - Error analysis and problem determination |
| Topic 4: IMS Database Recovery and Backup | 15% | - Restart and recovery procedures - Disaster recovery planning - Recovery control (DL/I, DBRC) - Image copies and backup strategies |
| Topic 5: IMS Data Sharing and Performance | 15% | - Performance monitoring and tuning - Data sharing architecture - Locking and concurrency control - Buffer pool and storage optimization |
| Topic 6: IMS Database Operations and Maintenance | 20% | - Database initialization and startup - Operational procedures and best practices - Access control and security - Reorganization and space management |
IBM Certified Database Administrator - IBM IMS Sample Questions:
1. If the user specifies multiple PCBs for a single database in a PSBGEN, which statement is correct?
A) Only one of them can be used.
B) The processing options must be identical.
C) It allows for multiple positions.
D) It is illegal.
2. What information is NOT included as part of a DB PCB returned to an application program?
A) Database Name
B) Segment Length
C) Status Code
D) Segment Name
3. Which one of the following statements is FALSE about DB2 Workload Management (WLM)?
A) DB2 Workload Management dispatcher can be used to control sharing of memory resources among active workloads.
B) DB2 Workload Management allows dynamic re-prioritization of work by remapping a workload to a different service class.
C) DB2 Workload Management uses workloads to identify incoming work based on the connection attributes under which the work is submitted.
D) When a WLM threshold condition is violated an action is executed in order to maintain stability in the system.
4. Which function is NOT performed by the Log Recovery utility (DFSULTR0)?
A) Closes an open OLDS dataset.
B) Lists all the active PSBs on an OLDS dataset.
C) Creates an interim log dataset.
D) Merges OLDS datasets from multiple IMS systems.
5. Which of the following options best describes the differences between Label Based Access Control (LBAC) and Row and Column Access Control (RCAC)?
A) LBAC allows you to protect access only to rows, while RCAC allows you to protect both rows and columns.
B) 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.
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 is a fixed label security model designed for the US government while LBAC is a general purpose security model best suited for commercial customers.
Solutions:
| Question # 1 Answer: C | Question # 2 Answer: B | Question # 3 Answer: A | Question # 4 Answer: D | Question # 5 Answer: C |




