IBM C1000-156 Practice Exams
Last updated on Oct 21,2026- Exam Code: C1000-156
- Exam Name: IBM Security QRadar SIEM V7.5 Administration
- Certification Provider: IBM
- Latest update: Oct 21,2026
Question #41
Which authentication type in QRadar encrypts the username and password and forwards the username and password to the external server for authentication?
- A . RADIUS authentication
- B . Two-factor authentication
- C . TACACS authentication
- D . System authentication
Correct Answer: C
C
Explanation:
TACACS (Terminal Access Controller Access-Control System) authentication is a protocol used in IBM QRadar SIEM V7.5 for authenticating users by forwarding their credentials to an external server.
Here’s how it works:
Encryption: TACACS encrypts the entire payload of the authentication packet, including the username and password, ensuring secure transmission.
Forwarding Credentials: After encryption, the credentials are forwarded to an external TACACS server, which performs the actual authentication.
Authentication Process: The external server checks the credentials against its database and sends a response back to QRadar indicating whether the authentication is successful or not.
Reference
IBM QRadar SIEM documentation explains TACACS authentication in detail, highlighting its secure encryption and external server verification process.
C
Explanation:
TACACS (Terminal Access Controller Access-Control System) authentication is a protocol used in IBM QRadar SIEM V7.5 for authenticating users by forwarding their credentials to an external server.
Here’s how it works:
Encryption: TACACS encrypts the entire payload of the authentication packet, including the username and password, ensuring secure transmission.
Forwarding Credentials: After encryption, the credentials are forwarded to an external TACACS server, which performs the actual authentication.
Authentication Process: The external server checks the credentials against its database and sends a response back to QRadar indicating whether the authentication is successful or not.
Reference
IBM QRadar SIEM documentation explains TACACS authentication in detail, highlighting its secure encryption and external server verification process.
Question #42
What protocol is NOT supported for receiving data into the event ingress component of QRadar?
- A . Syslog
- B . SNMP
- C . FTP
- D . JDBC
Correct Answer: D
Question #43
An administrator opens the Offenses section and goes to Rules to edit the system notification rule.
What is the rule name for system notifications?
- A . System: Notification
- B . System: Hardware and Software monitoring
- C . System: Software Notifications
- D . System: Hardware Notifications
Correct Answer: A
A
Explanation:
In IBM QRadar, system notifications are crucial for alerting administrators about various events and statuses that require attention. The rule name for system notifications is "System: Notification". Here is a detailed explanation of how it functions and how to find and edit this rule:
Accessing the Offenses Section: To view and manage rules related to offenses, an administrator needs to open the Offenses section in the QRadar console.
Navigating to Rules: Within the Offenses section, there is a subsection for rules. This is where all the predefined and custom rules are listed.
Editing System Notification Rules: The specific rule for system notifications is named "System: Notification". This rule is responsible for generating notifications based on system events and statuses.
Customizing the Rule: By selecting and editing this rule, administrators can adjust the conditions and actions associated with system notifications, ensuring they are tailored to the specific needs and policies of the organization.
This rule is essential for maintaining awareness of system events and ensuring that potential issues are promptly addressed.
Reference
IBM Security QRadar SIEM and IBM Security QRadar EDR integration.pdf
A
Explanation:
In IBM QRadar, system notifications are crucial for alerting administrators about various events and statuses that require attention. The rule name for system notifications is "System: Notification". Here is a detailed explanation of how it functions and how to find and edit this rule:
Accessing the Offenses Section: To view and manage rules related to offenses, an administrator needs to open the Offenses section in the QRadar console.
Navigating to Rules: Within the Offenses section, there is a subsection for rules. This is where all the predefined and custom rules are listed.
Editing System Notification Rules: The specific rule for system notifications is named "System: Notification". This rule is responsible for generating notifications based on system events and statuses.
Customizing the Rule: By selecting and editing this rule, administrators can adjust the conditions and actions associated with system notifications, ensuring they are tailored to the specific needs and policies of the organization.
This rule is essential for maintaining awareness of system events and ensuring that potential issues are promptly addressed.
Reference
IBM Security QRadar SIEM and IBM Security QRadar EDR integration.pdf
Question #44
Which two (2) open standards does the QRadar Threat Intelligence app use for feeds?
- A . TAXII
- B . AQL
- C . STIX
- D . JSON
- E . OSINT
Correct Answer: A, C
A, C
Explanation:
The QRadar Threat Intelligence app uses open standards to integrate and utilize threat intelligence feeds effectively.
The two key standards used are:
TAXII (Trusted Automated eXchange of Indicator Information): This is an application layer protocol used for exchanging cyber threat intelligence over HTTPS. It enables the sharing of threat information across different systems and organizations.
STIX (Structured Threat Information eXpression): This is a standardized language used for representing structured cyber threat information. STIX enables the consistent and machine-readable representation of threat data, facilitating the integration and analysis of threat intelligence.
These standards ensure that threat intelligence data is formatted and exchanged in a consistent and interoperable manner, enhancing the overall effectiveness of the threat intelligence processes in QRadar.
Reference
The IBM QRadar SIEM documentation and threat intelligence app configuration guides describe the use of TAXII and STIX for integrating threat intelligence feeds.
A, C
Explanation:
The QRadar Threat Intelligence app uses open standards to integrate and utilize threat intelligence feeds effectively.
The two key standards used are:
TAXII (Trusted Automated eXchange of Indicator Information): This is an application layer protocol used for exchanging cyber threat intelligence over HTTPS. It enables the sharing of threat information across different systems and organizations.
STIX (Structured Threat Information eXpression): This is a standardized language used for representing structured cyber threat information. STIX enables the consistent and machine-readable representation of threat data, facilitating the integration and analysis of threat intelligence.
These standards ensure that threat intelligence data is formatted and exchanged in a consistent and interoperable manner, enhancing the overall effectiveness of the threat intelligence processes in QRadar.
Reference
The IBM QRadar SIEM documentation and threat intelligence app configuration guides describe the use of TAXII and STIX for integrating threat intelligence feeds.
Question #45
An administrator is reviewing the system notifications and discovers this error:
Insufficient disk space to complete data export request.
The Export Directory property in the System Settings has the default configuration.
Which disk partition does the administrator need to check?
- A . /store/ariel/events/exports
- B . /var/log/exports
- C . /storetmp/exports
- D . /store/exports
Correct Answer: A
A
Explanation:
When the error "Insufficient disk space to complete data export request" is encountered, and the Export Directory property in the System Settings has the default configuration, the disk partition that needs to be checked is /store/ariel/events/exports. This directory is typically used for exporting event data in QRadar SIEM. The error indicates that the available disk space in this partition is insufficient to handle the export operation. Administrators should check the storage usage of this partition and manage the space by either cleaning up unnecessary files or expanding the storage capacity.
Reference
QRadar SIEM V7.5 Administration Guide – Chapter on System Notifications and Disk Management
A
Explanation:
When the error "Insufficient disk space to complete data export request" is encountered, and the Export Directory property in the System Settings has the default configuration, the disk partition that needs to be checked is /store/ariel/events/exports. This directory is typically used for exporting event data in QRadar SIEM. The error indicates that the available disk space in this partition is insufficient to handle the export operation. Administrators should check the storage usage of this partition and manage the space by either cleaning up unnecessary files or expanding the storage capacity.
Reference
QRadar SIEM V7.5 Administration Guide – Chapter on System Notifications and Disk Management
Question #46
To detect outliers, which Anomaly Detection Engine rule tests events or flows for volume changes that occur in regular patterns?
- A . Behavioral rules
- B . Threshold rules
- C . Anomaly rules
- D . Building block rules
Correct Answer: C
C
Explanation:
In IBM QRadar SIEM V7.5, Anomaly Detection Engine rules that test events or flows for volume changes occurring in regular patterns are known as Anomaly Rules.
Here’s how they function:
Detection: Anomaly rules are designed to identify deviations from normal behavior by analyzing patterns in the data.
Volume Changes: These rules specifically look for unusual increases or decreases in event or flow volumes that might indicate potential security incidents.
Regular Patterns: By understanding regular patterns in network traffic and event logs, anomaly rules can highlight significant outliers that warrant further investigation.
Reference
The functionality and configuration of anomaly rules are covered extensively in the IBM QRadar SIEM administration guide, providing administrators with the tools to effectively detect and respond to abnormal network activities.
C
Explanation:
In IBM QRadar SIEM V7.5, Anomaly Detection Engine rules that test events or flows for volume changes occurring in regular patterns are known as Anomaly Rules.
Here’s how they function:
Detection: Anomaly rules are designed to identify deviations from normal behavior by analyzing patterns in the data.
Volume Changes: These rules specifically look for unusual increases or decreases in event or flow volumes that might indicate potential security incidents.
Regular Patterns: By understanding regular patterns in network traffic and event logs, anomaly rules can highlight significant outliers that warrant further investigation.
Reference
The functionality and configuration of anomaly rules are covered extensively in the IBM QRadar SIEM administration guide, providing administrators with the tools to effectively detect and respond to abnormal network activities.
Question #47
From which site can you download software updates for QRadar?
- A . IBM Fix Central
- B . IBM X-Force Exchange
- C . IBM Passport Advantage Online
- D . QRadar 101
Correct Answer: A
A
Explanation:
The primary site for downloading software updates for IBM QRadar is IBM Fix Central.
Here’s how it works:
IBM Fix Central: A centralized platform for downloading fixes, updates, and patches for IBM software products.
Accessing Updates: Administrators can log in to IBM Fix Central, select QRadar from the list of products, and download the necessary updates.
Regular Updates: Keeping QRadar updated with the latest fixes and patches ensures optimal performance and security.
Reference
IBM QRadar SIEM documentation and support resources direct users to IBM Fix Central for downloading and applying software updates.
A
Explanation:
The primary site for downloading software updates for IBM QRadar is IBM Fix Central.
Here’s how it works:
IBM Fix Central: A centralized platform for downloading fixes, updates, and patches for IBM software products.
Accessing Updates: Administrators can log in to IBM Fix Central, select QRadar from the list of products, and download the necessary updates.
Regular Updates: Keeping QRadar updated with the latest fixes and patches ensures optimal performance and security.
Reference
IBM QRadar SIEM documentation and support resources direct users to IBM Fix Central for downloading and applying software updates.
Question #48
How can you configure a log source to provide events to different domains?
- A . Create a saved search on the Network Activity tab to view events in specific domains.
- B . Use the Assistant app to update the domain information for the log source.
- C . Use custom properties to assign events from a single log source to different domains.
- D . Use the Use Case Manager app to update building blocks to support multi domain events.
Correct Answer: C
C
Explanation:
To configure a log source in IBM QRadar SIEM V7.5 to provide events to different domains, administrators can use custom properties.
Here’s how it works:
Custom Properties: Create and configure custom properties to tag events with specific domain information.
Assigning Events: When events are ingested from a log source, these custom properties can be used to dynamically assign events to different domains based on predefined criteria.
Domain Management: This approach allows flexibility in managing and segregating data from a single log source across multiple domains, ensuring that each domain receives the relevant events.
Reference
The configuration of custom properties for domain assignment is detailed in the QRadar SIEM administration guides, providing step-by-step instructions for setting up and using custom properties for domain management.
C
Explanation:
To configure a log source in IBM QRadar SIEM V7.5 to provide events to different domains, administrators can use custom properties.
Here’s how it works:
Custom Properties: Create and configure custom properties to tag events with specific domain information.
Assigning Events: When events are ingested from a log source, these custom properties can be used to dynamically assign events to different domains based on predefined criteria.
Domain Management: This approach allows flexibility in managing and segregating data from a single log source across multiple domains, ensuring that each domain receives the relevant events.
Reference
The configuration of custom properties for domain assignment is detailed in the QRadar SIEM administration guides, providing step-by-step instructions for setting up and using custom properties for domain management.
Question #49
A QRadar administrator needs to quickly check the disk space for all managed hosts.
Which command does the administrator use?
- A . /opt/qradar/support/all_servers.sh ‘Is -ltrsh"
- B . /opt/qradar/support/all_servers.sh "rra -rf /store’
- C . /opt/qradar/support/all_servers.sh -C -k ‘df -Th’
- D . /opt/qradar/support/all_servers.sh -C -K ‘watch Is’
Correct Answer: C
C
Explanation:
To quickly check the disk space for all managed hosts in IBM QRadar SIEM V7.5, the administrator uses the following command:
Command: /opt/qradar/support/all_servers.sh -C -k ‘df -Th’
Function: This command checks the disk space across all managed hosts, providing detailed information about the filesystem types and disk usage.
Parameters:
-C: Executes the command on all managed hosts.
-k: Keeps the output in a human-readable format.
‘df -Th’: The specific command to display the disk space usage in a tabular format with human-readable file sizes.
Reference
The IBM QRadar SIEM documentation provides a comprehensive list of commands for system administration, including those for checking disk space on managed hosts.
C
Explanation:
To quickly check the disk space for all managed hosts in IBM QRadar SIEM V7.5, the administrator uses the following command:
Command: /opt/qradar/support/all_servers.sh -C -k ‘df -Th’
Function: This command checks the disk space across all managed hosts, providing detailed information about the filesystem types and disk usage.
Parameters:
-C: Executes the command on all managed hosts.
-k: Keeps the output in a human-readable format.
‘df -Th’: The specific command to display the disk space usage in a tabular format with human-readable file sizes.
Reference
The IBM QRadar SIEM documentation provides a comprehensive list of commands for system administration, including those for checking disk space on managed hosts.
Question #50
When configuring a log source, which protocols are used when receiving data into the event ingress component?
- A . SFTR HTTP Receiver, SNMP
- B . Syslog, HTTP Receiver, SNMP
- C . Syslog, FTP Receiver, SNMP
- D . Syslog, HTTP Receiver, JDBC
Correct Answer: B
B
Explanation:
When configuring a log source in IBM QRadar SIEM V7.5, the protocols used to receive data into the event ingress component are critical for ensuring proper data collection and analysis.
The main protocols that are supported for this purpose are:
Syslog: A widely used protocol for message logging, supported by many network devices and servers.
HTTP Receiver: Allows QRadar to receive logs via HTTP POST requests, enabling integration with various web services and applications.
SNMP (Simple Network Management Protocol): Used for collecting and organizing information about managed devices on IP networks and for modifying that information to change device behavior.
Reference
IBM QRadar SIEM documentation and product guides confirm that these are the supported protocols for receiving data into the event ingress component. The specific details on protocol support can be found in the QRadar SIEM administration and configuration manuals.
B
Explanation:
When configuring a log source in IBM QRadar SIEM V7.5, the protocols used to receive data into the event ingress component are critical for ensuring proper data collection and analysis.
The main protocols that are supported for this purpose are:
Syslog: A widely used protocol for message logging, supported by many network devices and servers.
HTTP Receiver: Allows QRadar to receive logs via HTTP POST requests, enabling integration with various web services and applications.
SNMP (Simple Network Management Protocol): Used for collecting and organizing information about managed devices on IP networks and for modifying that information to change device behavior.
Reference
IBM QRadar SIEM documentation and product guides confirm that these are the supported protocols for receiving data into the event ingress component. The specific details on protocol support can be found in the QRadar SIEM administration and configuration manuals.