IBM C1000-210 Exam Dumps V8.02: 50 Free Demo Questions for 2026 Certification Preparation

You can use the C1000-210 exam dumps V8.02 for IBM Informix v15.0 Database Administrator – Professional exam preparation. We have designed 143 practice questions with verified answers, which are simple, reliable, and targeted to help you prepare faster and smarter, focusing on exactly what you need to succeed in the 2026 IBM Informix v15.0 Database Administrator – Professional exam cycle.

C1000-210 Exam Questions Cover the Key Topics for Better Preparation

We know the C1000-210 exam validates the intermediate skills required to install, configure, administer, and maintain IBM Informix database environments. Completing this exam will have proven your ability to ensure data availability, performance, and reliability, as well as handle storage, backups, and hybrid deployment troubleshooting. DumpsBase C1000-210 exam questions are based on the latest exam objectives, helping you revise key topics thoroughly and prepare effectively for every section of the IBM Informix v15.0 Database Administrator – Professional certification exam.

Target Audience: Database Administrators (DBAs) with at least two years of practical, hands-on experience with Informix or related solutions.

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To support you preview the C1000-210 dumps (V8.02), we share free dumps online. We have 50 free demo questions here, you should read and test, then you will find that DumpsBase delivers high-quality materials, allowing you to concentrate on the most relevant exam questions likely to appear in the real test.

1. An administrator is setting up a new instance and wants to ensure the root dbspace is mirrored for redundancy.

Which utility must be used to enable mirroring on an existing dbspace?

onspaces -m

onparams -m

onmode -m

oninit -m

2. An organization wants to audit every time a user successfully deletes a record from a specific table.

Which utility is used to configure and manage the audit facility?

onaudiit

onsecurity

onparams

onmode

3. Which component of a SMART financial goal ensures that the goal has a specific deadline for completion?

Achievable

Relevant

Measurable

Time-bound

4. What is the result of running the command oninit -v?

It initializes the disk and destroys all existing data.

It starts the server and displays verbose status messages to the terminal during the startup process

It starts the server in "Verify" mode without actually bringing it online.

It resets the ONCONFIG file to default values.

5. An administrator is configuring SSL for client connections.

In which file must the SSL attribute be added to the nettype column for the server entry?

sqlhosts

onconfig

services

hosts

6. An administrator is configuring a cluster and needs to ensure that the sqlhosts file correctly identifies the host machines.

What is the purpose of the fourth column (hostname) in a standard sqlhosts entry using onsoctcp?

It must always be an IP address.

It is the hostname or IP address where the Informix instance is running.

It identifies the local client machine name

It is the name of the service defined in /etc/services.

7. An administrator wants to create a "Temporary Dbspace.".

Which characteristic distinguishes it from a standard dbspace?

It is not physically backed up by ontape or onbar.

It cannot contain tables with indexes.

It is automatically deleted when the server restarts.

It only exists in the virtual shared memory.

8. The image above represents which restore type?

TEMP

Cold

Warm

Blended

9. Which command can be used to report the history of the most recent full-system backup performed with ontape?

ontape -s -v

oncheck -pr

systat pages

onstat -L -0

10. When running oncheck -cd, what specific task is the utility performing?

Checking data pages

Checking index pages

Checking system catalogs

Repairing chunk bitmaps

11. Which file contains the history of all backups performed using the ontape utility, which can be used to track when the last Level 0 was taken?

$INFORMIXDIR/etc/ON_TAPE_HISTORY

The message log (online.log)

The sysmaster: sysutils table

The reserved pages on disk

12. You observe that the Informix server is performing slowly. You run onstat -g ses and identify a session that is consuming an unusual amount of resources. You want to see the exact SQL statement currently being executed by that session ID (SID) 45.

Which command provides this information?

onstat -g sql 45

onstat -u 45

onstat -g ses 45

onstat -g stk 45

13. Which Informix utility is used to check the physical integrity of a dbspace and report on any detected page-level corruption?

oncheck

onmode

onstat

onparams

14. What is the result of setting the TAPEDEV parameter to /dev/null?

Physical backups are effectively disabled

Backups are compressed to a zero-byte file.

The server performs a backup to internal memory.

The engine automatically selects the next drive.

15. Which file is used by the Informix server at startup to locate the message files and determine the language used for server-generated messages?

sqlhosts

onconfig

informix.env

$INFORMIXDIR/etc/conmsg

16. When checking onstat -d, a DBA notices that the free column for a specific chunk is very low, but the size is large.

What does the free value represent in this context?

Number of unused disk pages

Total megabytes available

Percentage of growth remaining

Number of allocated extents

17. In a replication environment, what is a "Shadow Column"?

A hidden column used by the engine to track replication metadata.

A copy of a column on a secondary server.

A column used for temporary sorting.

A backup of the primary key.

18. You need to monitor the number of reads and writes occurring per second on each individual chunk.

Which onstat flag provides these statistics?

onstat -D

onstat -p

onstat -x

onstat -F

19. Which statement about smart triggers is true?

They cannot be used with sharded queries

They are used to synchronize GRID queries

They use AI to determine the final data updates

They execute asynchronously relative to the triggering event

20. You are performing a cold restore.

Which component of the Informix instance must be restored first before any other data can be recovered?

The root dbspace

The logical log files

The physical log files

The sysmaster database

21. A logical-log files shows a status flags of "U-B---L" ?

Which two statements are true?

Contains the last checkpoint record.

The log file is free and available to reuse.

The log file has been used but not backed up.

The log is backed up but still required for recovery.

The database server is currently writing the log file.

22. You need to create a dbspace that will be automatically managed by Informix, where the engine adds new chunks from a pre-defined pool of storage when space runs low.

What is this feature called?

Automatic Storage

Storage Provisioning

Expandable Chunks

Storage Pool

23. During a new installation of Informix v15.0 on Linux, which environmental variable is mandatory for the oninit utility to find the correct configuration file in $INFORMIXDIR/etc/?

ONCONFIG

INFORMIXSERVER

INFORMIXSQLHOSTS

PATH

24. Which SQL administration API storage optimization operation returns unused extent pages to the chunk free list?

shrink

repack

reshrink

compress

25. A server is running out of virtual shared memory segments frequently. To prevent the operating system from hitting the maximum number of segments allowed, the administrator wants to increase the size of each newly added segment.

Which ONCONFIG parameter should be modified?

SHMTOTAL

SHMVIRTSIZE

SHMADD

SHMVIRT_ALLOCSEG

26. You are troubleshooting a client connection issue. The client receives an error "-908: Attempt to connect to database server failed.".

Which Informix utility can be used on the server to see if the listener thread is active for the specific DBSERVERNAME?

onstat -g ntd

onstat -g ntt

onstat -g ntm

onstat -g ntc

27. You are managing a database where a specific table experiences heavy insert activity. You notice that the table's extents are becoming fragmented across the dbspace.

Which ALTER TABLE clause should you use to ensure that future extents for this table are larger, reducing the total number of extents created?

ALTER TABL

.. MODIFY NEXT SIZE

ALTER TABL

.. ADD EXTENT

ALTER TABL

.. SET EXTENT SIZE

ALTER TABL

.. NEXT SIZE

28. Which statement is true about using external smartblob spaces ?

A traditional smartblob space is not required.

Smartblobs in external smartblob spaces cannot be backed up externally.

Smartblob directories are created with owner root and permission 700.

Smart large objects can be stored externally in user-specified directories.

29. An administrator needs to add a new chunk to an existing dbspace named data_dbsp. The path is /dev/chunk1, size is 500MB, and offset is 0.

Which command is correct?

onspaces -a data_dbsp -p /dev/chunk1 -o 0 -s 500000

onspaces -c -d data_dbsp -p /dev/chunk1 -s 500MB

onparams -a data_dbsp -p /dev/chunk1 -o 0 -s 500000

onmode -a data_dbsp -p /dev/chunk1 -s 500000

30. You are using onbar and want to view the status of all backup objects currently stored in the storage manager catalog.

Which utility should you use?

onsmsync

onbar -v

onstat -g bar

bar_act.log

31. In a Shared Disk Secondary (SDS) setup, how does the Secondary server access the data?

It reads directly from the Primary's disks.

It receives logs via the network.

It uses a separate copy of the data.

It only reads from the temp dbspaces

32. An administrator wants to see a list of all current SQL statements that have been running for more than 60 seconds.

Which utility or table provides this specific view?

sysmaster: syssqltrace

onstat -g active

onstat -g ses

sysmaster: syssessions

33. In an Informix High Availability Data Replication (HDR) setup, the Secondary server is currently in "Read-Only" mode. The Primary server experiences a hardware failure.

Which utility and command should be used on the Secondary server to immediately promote it to the new Primary?

onmode -d make primary

onmode -d standard

onstat -d primary

onmode -d primary [secondary_name]

34. After a system crash, the Informix server is restarted.

During the "Fast Recovery" phase, what is the engine primarily doing?

Clearing the temp dbspaces

Replaying logical log records

Initializing the root dbspace

Rebuilding all corrupted indexes

35. You need to implement Column-Level Encryption for a sensitive table containing credit card numbers.

Which Informix feature or built-in function allows for this specific level of security?

enc_varchar()

set_column_secure()

storage_encrypt()

db_crypt_mask()

36. During a system restore, the DBA needs to recover the database to a specific point in time from three hours ago.

Which utility and option support this "Point-in-Time" recovery?

onbar -r -t

ontape -r -p

onmode -r -time

oncheck -r -t

37. A heavily used table is experiencing performance degradation due to frequent extent allocations and disk fragmentation.

Which two options will provide a long-term solution? (Choose two)

Add new chunk to dbspace

Increase the logical log size

Reorganize extents using admin task

Restart the Informix server to reorganize storage

Redefine the table with larger EXTENT SIZE and NEXT SIZE values

38. You are utilizing the Informix Wire Listener.

Which protocol does this allow Informix to support natively for web-based applications?

MongoDB API

SOAP

MQTT

FTP

39. An administrator is attempting to start an Informix v15.0 instance, but the initialization fails. The oninit command exits with an error indicating that the shared memory segment cannot be created. Upon checking the ONCONFIG file, the administrator notes that SHMTOTAL is set to 0.

What is the correct interpretation of this setting?

The engine will automatically allocate all available physical RAM for shared memory.

The engine will fail to start because a positive integer value is required for initialization.

The engine will only allocate the memory defined in SHMVIRTSIZE and SHMAD

The engine will expand memory dynamically as needed, limited only by operating system parameters.

40. The database server runs the following threads:

$ onstat -g ath|egrep 'lst|poll'

8 45fe1028 0 1 running 9soc* soctcppoll

9 45fe19b0 0 1 running 1cpu* ipcstrpoll

10 4601a028 0 2 sleeping forever 1cpu* soctcplst

11 46047a90 0 2 sleeping forever 1cpu* ipcstrl

What is the correct setting of NETTYPE configuration parameters for this server?

NETTYPE ipcstr,1,150, NET NETTYPE soctcp,1,150, CPU

NETTYPE ipcstr,1,150, CPU NETTYPE soctcp,1,150, CPU

NETTYPE ipcstr,1,150, CPU NETTYPE soctcp,1,150, SOC

NETTYPE ipcstr,1,150, CPU NETTYPE soctcp,1,150, NET

41. In Informix v15.0, what is the purpose of the FULL_DISK_INIT parameter in the ONCONFIG file?

It enables automatic expansion of chunks when disk space is full.

It prevents the accidental use of oninit -i (disk initialization) on an existing instance.

It triggers a disk check every time the server starts.

It formats all raw devices to the Informix proprietary format.

42. What is the primary function of the SQLAdmin API in Informix v15.0?

To execute administrative tasks via SQL commands

To provide a graphical interface for developers

To manage connections for JDBC/ODBC clients

To automate the installation of the Informix engine

43. A DBA notices that the online.log is filling up very quickly with informational messages.

Which parameter controls the level of detail written to this log for specific diagnostic events?

MSG_DATE

CONSOLE

DIAGLEVEL

LOG_LEVEL

44. Which utility can be used to export data from a single table for use by another application?

dbload

dbexport

onunload

dbaccess

45. You are troubleshooting a performance bottleneck and suspect that the virtual shared memory is growing too frequently.

Which onstat command should you use to see the history of when additional segments were added?

onstat -g seg

onstat -m

onstat -g shm

onstat -g bus

46. Which utility is used to import a database that was previously created using the dbexport command?

dbimport

dbload

dbaccess

onunload

47. To support international characters in a database, a DBA must set the DB_LOCALE environment variable.

At what stage is the DB_LOCALE permanently associated with a database?

When the Informix instance is initialized with oninit -i.

When the CREATE DATABASE statement is executed.

Every time a user connects to the database.

When the sqlhosts file is updated.

48. Which virtual processor (VP) class handles the pre-allocation of disk space when a dbspace is being created or expanded?

PIO

ADM

MSC

AIO

49. You are using the dbexport utility to migrate a database.

Where does the utility place the resulting schema file and data files by default?

In a directory named .exp

In the $INFORMIXDIR/bin folder

In the user's home directory

In the /tmp/informix directory

50. The Informix Connection Manager Server has the following sqlhosts:

server_grp10 group - - e=server_3

# HDR Primary server_1 onsoctcp my_host_1 9088 g=server_grp10

# HDR Secondary server_2 onsoctcp my_host_2 9088 g=server_grp10

# HDR RSS

server_3 onsoctcp my_host_2 9088 g=server_grp10

If the connection manager SLA has:

CLUSTER my_cluster

{

INFORMIXSERVER server_grp10

SLA sla_1 DBSERVERS=(server_1, server_3)

POLICY=WORKLOAD

SLA sla_2 DBSERVERS=(server_1, server_2, server_3)

POLICY=ROUNDROBIN

SLA sla_3 DBSERVERS=ANY

FOC ORDER=ENABLED PRIORITY=1

}

If a client connects to sla_1, where will it connect?

server_1

Any server in the server_grp10 list

Whichever of server_1 and server_3 is next up in the queue

Whichever of server_1 and server_3 has the current lowest usage

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