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Db2 12 for z/OS DBA Fundamentals Practice Test

C1000-122 exam Format | Course Contents | Course Outline | exam Syllabus | exam Objectives

Exam Code: C1000-122
Exam Name: Db2 12 for z/OS DBA Fundamentals
Number of questions: 63
Number of questions to pass: 44
Time allowed: 90 minutes
Status: Live

Section 1: Planning (12%)

- Db2 12 system requirements and supported z/OS levels
- Processor requirements (z196 and later, z13, z14, z15, z16)
- Memory requirements and buffer pool planning
- Installation methods: SMP/E, DB2 Installation CLIST, new function mode (NFM), catalog migration
- Migration from Db2 11 or earlier versions, fallback and fallback SPE
- Enabling new function mode (ENFM), catalog changes in V12
- DSNZPARM (ZPARM) parameters relevant to installation
- Subsystem parameters (DSNTIJUZ, DSN6SYSP, DSN6ARVP, DSN6LOGP, DSN6SPRM)
- Buffer pool sizing and attributes (BP0 to BP49, BP32K, page sizes 4K, 8K, 16K, 32K)
- Use of zIIP processors for DB2 workload offloading
- High availability and disaster recovery planning (Data Sharing, HADR, GDPS)
- Distributed Data Facility (DDF) planning and DRDA
- Storage requirements and use of SMS, extended addressability
- Function levels in Db2 12 (V12R1M500, M501, M502, M505, etc.)
- DSNZPARM
- IRLM
- EDM pool
- RDS pool
- DDF
- ZPARM
- function level
- CATMAINT
- ENFM
- fallback SPE
- zIIP
- SMS
- extended addressability
- data sharing group
- coupling facility

Section 2: Working with SQL and XML (15%)

- Data types: CHAR, VARCHAR, INTEGER, DECIMAL, DATE, TIME, TIMESTAMP, CLOB, BLOB, XML
- Basic SQL: SELECT, INSERT, UPDATE, DELETE, MERGE
- Joins: inner join, left/right/full outer join, cross join
- Subqueries: scalar, correlated, non-correlated, EXISTS, NOT EXISTS
- Common table expressions (CTE), recursive CTE
- SQL functions: scalar (COALESCE, NULLIF, CASE), aggregate (SUM, AVG, COUNT, MIN, MAX), string functions
- Grouping and HAVING clause
- UNION, UNION ALL, INTERSECT, EXCEPT
- XML data type, XML columns, XML storage (XML tablespaces)
- XML parsing and validation (XMLPARSE, XMLVALIDATE)
- Querying XML with SQL/XML functions: XMLQUERY, XMLEXISTS, XMLTABLE
- XML indexes and XML schema registration (XSR)
- Dynamic vs static SQL, parameter markers, PREPARE, EXECUTE IMMEDIATE
- predicate
- sargable predicate
- stage 1 predicate
- stage 2 predicate
- indexable predicate
- XMLTABLE
- XMLEXISTS
- XMLQUERY
- XMLPARSE
- XSR (XML Schema Repository)
- pureXML

Section 3: Security (12%)

- Authentication methods: z/OS (RACF, ACF2, Top Secret), LDAP, Kerberos
- Authorization IDs: primary, secondary, role, trusted context
- DB2 privileges: SYSADM, SYSCTRL, SYSOPR, DBADM, DBCTRL, DBMAINT
- Object privileges: SELECT, INSERT, UPDATE, DELETE, ALTER, INDEX, TRIGGER, EXECUTE
- Administrative authorities: PACKADM, SQLADM, DATAACCESS, ACCESSCTRL
- Row and column access control (RCAC): row permissions, column masks
- Multilevel security (MLS) and security labels
- Audit policies and audit trace
- Trusted context and role-based access
- Encryption: data at rest (z/OS dataset encryption), in-flight (DRDA encryption), application-level encryption
- SECADM authority
- RACF
- SYSADM
- DBADM
- DATAACCESS
- ACCESSCTRL
- RCAC
- row permission
- column mask
- trusted context
- role
- SECADM
- audit policy
- multilevel security

Section 4: Operations (15%)

- Starting and stopping DB2: START DB2, STOP DB2, STOP DB2 MODE(FORCE)
- DISPLAY commands: DISPLAY DATABASE, DISPLAY THREAD, DISPLAY UTILITY, DISPLAY DDF
- DB2 commands: -START RLIMIT, -TERM UTILITY, -ALTER BUFFERPOOL, -REFRESH DB2
- Utility execution: RUNSTATS, REORG, COPY, RECOVER, LOAD, UNLOAD, REPAIR
- Online schema changes: ALTER TABLE, ALTER INDEX, pending changes
- Backup and recovery: image copies (full, incremental), QUIESCE, BACKUP SYSTEM, RESTORE SYSTEM
- Log management: active log, archive log, BSDS, log preformatting
- Monitoring: -DISPLAY LOG, -DISPLAY BUFFERPOOL, -ACCESS DATABASE
- BSDS
- active log
- archive log
- image copy
- QUIESCE
- online REORG
- pending definition
- materialization
- TERM UTILITY
- DISPLAY THREAD
- CANCEL THREAD

Section 5: Data Concurrency (14%)

- Locking: lock escalation, lock avoidance, lock modes (IS, IX, S, U, X)
- Isolation levels: CS (cursor stability), RS (read stability), RR (repeatable read), UR (uncommitted read)
- Claim and drain process
- Deadlock and timeout detection (IRLM parameters)
- Bind options: ACQUIRE(USE/ALLOCATE), RELEASE(COMMIT/DEALLOCATE), ISOLATION(CS/RS/RR/UR)
- Currentdata option and blocking
- Lock avoidance with CS and lock skipping
- LOB and XML locking behavior
- lock escalation
- lock avoidance
- claim
- drain
- deadlock
- timeout
- IRLM
- isolation level
- cursor stability
- read stability
- uncommitted read
- CURRENTDATA

Section 6: Application Design (15%)

- Bind options and package management
- REOPT(ONCE/ALWAYS/NEVER), PLANMGMT, APREUSE
- Static vs dynamic SQL performance considerations
- Use of global temporary tables (DGTT), declared temporary tables
- Sequence objects and identity columns
- Triggers: BEFORE, AFTER, INSTEAD OF
- Stored procedures: native SQL procedures, external procedures
- Versioning of packages (APPLCOMPAT)
- Concentration of packages and thread reuse
- High performance DBATs in DDF
- package
- collection
- version
- APPLCOMPAT
- REOPT
- PLANMGMT
- APREUSE
- DGTT
- sequence
- trigger
- native SQL procedure
- high performance DBAT

Section 7: Working with Database Objects (15%)

- Tablespaces: partitioned, universal (PBG, PBR), segmented, LOB tablespaces
- Indexes: unique, non-unique, partitioning index, index on expression, DPSI
- Index page sizes and compression
- Cloning tables and databases
- Temporal tables: system-period temporal, application-period temporal, bitemporal
- Views, materialized query tables (MQT), aliases
- Constraints: primary key, unique, foreign key, check constraint
- Storage groups (STOGROUP), volumes, VCAT vs SMS
- Altering objects: ALTER TABLESPACE, ALTER INDEX, deferred alters
- universal tablespace
- PBG
- PBR
- partition-by-growth
- partition-by-range
- DPSI
- expression-based index
- temporal table
- history table
- STOGROUP
- clone table
- pending alter
- immediate alter

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C1000-122
Db2 12 for z/OS DBA Fundamentals
https://killexams.com/pass4sure/exam-detail/C1000-122
Question: 1
What is the purpose of the security labels in Db2 12 for z/OS?
A. To enforce row-level security for the database
B. To classify and protect sensitive data in the database
C. To control access to the database objects
D. To audit and monitor user activity in the database
Answer: B
Explanation: Security labels in Db2 12 for z/OS are used to classify and protect
sensitive data in the database. They help enforce data access controls and
ensure that only authorized users can view or modify sensitive information.
Question: 2
How does Db2 12 for z/OS handle data concurrency?
A. By using row-level locking
B. By using table-level locking
C. By implementing optimistic concurrency control
D. By implementing pessimistic concurrency control
Answer: A
Explanation: Db2 12 for z/OS handles data concurrency by using row-level
locking. This means that only the specific rows being accessed by a transaction
are locked, allowing other transactions to access different rows concurrently.
Question: 3
Which SQL statement should be used to retrieve XML data stored in a Db2 12
for z/OS database?
A. SELECT XMLQUERY
B. SELECT XMLTABLE
C. SELECT XMLGEN
D. SELECT XMLCAST
Answer: B
Explanation: The SELECT XMLTABLE statement is used to retrieve XML
data stored in a Db2 12 for z/OS database. It allows you to query XML data and
extract specific elements or attributes from the XML document.
Question: 4
Which Db2 12 for z/OS object is used to enforce referential integrity
constraints?
A. Index
B. View
C. Trigger
D. Constraint
Answer: D
Explanation: Constraints are Db2 12 for z/OS objects used to enforce referential
integrity constraints. They define rules that ensure the relationships between
tables are maintained, such as ensuring the existence of related rows in a
foreign key relationship.
Question: 5
What is the purpose of a database planning process in Db2 12 for z/OS?
A. To determine the hardware requirements for the database
B. To define the logical and physical structure of the database
C. To create backup and recovery strategies for the database
D. To establish security policies and access controls for the database
Answer: B
Explanation: The purpose of the database planning process in Db2 12 for z/OS
is to define the logical and physical structure of the database. This includes
determining the table structures, indexes, tablespaces, and other storage
considerations.
Question: 6
What is the purpose of a database trigger in Db2 12 for z/OS?
A. To enforce data validation rules
B. To control access to the database objects
C. To monitor and log database activity
D. To optimize query execution plans
Answer: C
Explanation: Database triggers in Db2 12 for z/OS are used to monitor and log
database activity. They can be defined to automatically execute certain actions,
such as logging changes to specific tables or performing additional data
validation checks.
Question: 7
What is the purpose of application design in Db2 12 for z/OS?
A. To optimize query performance
B. To define the database schema
C. To establish security policies for the application
D. To create backup and recovery strategies for the application
Answer: A
Explanation: The purpose of application design in Db2 12 for z/OS is to
optimize query performance. This includes designing efficient SQL statements,
defining appropriate indexes, and structuring the application code to minimize
database access and Improve overall performance.
Question: 8
Which utility is used to load data into a Db2 12 for z/OS database?
A. DSNTIAUL
B. DSNTIUL
C. DSNTIPTF
D. DSNTIAUL
Answer: B
Explanation: The DSNTIUL utility is used to load data into a Db2 12 for z/OS
database. It allows you to efficiently insert large volumes of data into
tables,performing high-speed data loading operations.
Question: 9
Which utility is used to perform database backup and recovery operations in
Db2 12 for z/OS?
A. DSNTIJRT
B. DSNTIAUL
C. DSNTIAUL
D. DSNTIPRN
Answer: D
Explanation: The DSNTIPRN utility is used to perform database backup and
recovery operations in Db2 12 for z/OS. It allows you to create full or
incremental backups of the database and restore it to a previous state if
necessary.
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