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IBM IBM Certified Administrator C1000-078

C1000-078

Exam Code: C1000-078

Exam Name: IBM Db2 12 for z/OS Administrator

Updated: Oct 19, 2026

Q & A: 62 Questions and Answers

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IBM C1000-078 Exam Syllabus Topics:

SectionObjectives
Topic 1: Db2 12 for z/OS Architecture and Installation- Db2 subsystem components and architecture
- Installation and migration considerations
Topic 2: Security and Authorization- Privileges, roles, and access control
- Authentication and authorization models
Topic 3: Performance Monitoring and Tuning- Subsystem monitoring and optimization
- Query performance analysis
Topic 4: Database Design and Objects- Schema design and object management
- Tables, indexes, and storage structures
Topic 5: Backup, Recovery, and Data Integrity- Recovery strategies and logging
- Backup utilities and procedures

IBM Db2 12 for z/OS Administrator Sample Questions:

Question #1
CPU utilization for a DB2 subsystem suddenly increased by approximately 20% and is still at this high level after 24 hours. No increase in workload was expected. What would be the most efficient analysis to perform?

A. Check that the WLM settings are set correctly
B. Execute a -DISPLAY STATS command to identify the workload which is causing the high CPU
C. Start a system-wide performance trace to identify the workload which is causing the high CPU
D. Execute a -DISPLAY TRACED command to check if there are additional traces running or if the global trace is on


Question #2
Before execution of the CHECK DATA utility, which of the following should be performed?

A. Alter the object to remove any table or referential constraint definitions
B. Execute CHECK INDEX on the primary key and foreign key indexes
C. Start the object in question with FORCE to remove any CHECK PENDING status
D. Execute the REPAIR utility with SET NOCHECKPEND


Question #3
Which of the following is TRUE about the SYSCTRL authority?

A. It is designed to be an administrator in a system with sensitive data
B. It is designed so group privileges cannot be granted to SYSCTRL
C. It is designed to allow access to all data directly in DB2
D. It is designed not to be a part of the administrative authorizations


Question #4
A down level page set is identified by the following error message:
DSNB232I UNEXPECTED DATA SET LEVEL ID ENCOUNTERED
Which of the following should be performed to correct the condition?

A. Execute a REORG on the object in question
B. Stop the object, set the DLDFREQ subsystem parameter to OFF. and then restart the object in RW status
C. Execute a REPAIR DBD REBUILD on the object
D. Replace the object with an appropriate data set at the proper level and confirm with DSN1PRNT of the header page


Question #5
Beginning with function level V12R1M500. what would be the maximum data set size of an active log?

A. 123 GB
B. 255 GB
C. 4 GB
D. 768 GB


Solutions:

Question #1
Correct Answer: C
Question #2
Correct Answer: C
Question #3
Correct Answer: A
Question #4
Correct Answer: C
Question #5
Correct Answer: B

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