C1000-156 Sample Questions Answers

In IBM QRadar SIEM V7.5, events or flows stop contributing to an offense when the offense becomes dormant. Here’s how it works:

Dormant Offense: An offense becomes dormant when there is no new activity contributing to it for a specified period. This indicates that the threat or incident has not had any further related events or flows.

Contribution Stoppage: Once an offense is marked as dormant, no additional events or flows are added to it, which helps in managing the offense lifecycle and resources within QRadar.

This behavior helps in distinguishing between active and inactive threats, allowing security analysts to focus on ongoing incidents.

ReferencesThe QRadar SIEM administration and user guides provide detailed explanations of offense management, including the conditions under which offenses become dormant and how this affects event and flow contributions.

The primary method used by IBM QRadar to install and manage applications created using the GUI Application Framework Software Development Kit (SDK) is through the REST API interface:

API Endpoint:/api/gui_app_framework

Functionality: This endpoint allows administrators to manage the lifecycle of applications, including installation, updates, and removal.

Integration: Provides seamless integration with the GUI Application Framework, enabling the development and deployment of custom applications within QRadar.

ReferencesThe IBM QRadar API documentation provides details on the/api/gui_app_frameworkendpoint and its usage for managing GUI applications.

To verify disk usage levels in a Linux environment, thedf -hcommand is used. This command provides an overview of the disk space usage, displaying the available and used space in a human-readable format.

Open the terminal or CLI on the system.

Typedf -hand press Enter.

Review the output, which will show the filesystem, size, used space, available space, and usage percentage for all mounted filesystems.

ReferencesIBM QRadar SIEM V7.5 Administration documentation.

In IBM QRadar SIEM V7.5, managing what functions a user can access is crucial for maintaining security and ensuring that users have appropriate permissions. TheSecurity Profileoption is used to manage these access controls. Here’s how it works:

Security Profile: Defines the specific permissions and roles assigned to users, dictating what actions they can perform within QRadar. This includes access to various modules, dashboards, and functionalities.

User Role: While related, user roles are more about grouping users with similar permissions rather than defining individual access.

Admin Role: Typically reserved for users with administrative privileges but does not manage the specific functions users can access.

Security Options: This is not a relevant option for managing user access to QRadar functions.

ReferencesIBM QRadar SIEM V7.5 documentation details how security profiles are configured and managed, providing comprehensive steps on assigning and modifying user access based on roles and profiles.

The Advanced Search field in IBM QRadar is used for running Ariel Query Language (AQL) searches. Here's a detailed explanation:

Ariel Query Language (AQL): AQL is a query language used in QRadar to search and retrieve event and flow data from the Ariel database. It is similar to SQL but tailored for the specific needs of QRadar's data structure.

Advanced Search Field: The advanced search field provides a user interface for crafting and executing AQL queries. This allows users to perform detailed and complex searches to analyze specific patterns, behaviors, or events in their security data.

Functionality: Using AQL, users can specify criteria for selecting and filtering data, allowing for precise and comprehensive searches. This is essential for deep-dive investigations and custom reports.

The ability to run AQL searches gives analysts powerful tools to extract meaningful insights from their security data.

ReferencesIBM Security QRadar SIEM and IBM Security QRadar EDR integration.pdf​

In QRadar SIEM V7.5, the number of vulnerability processors is limited to 1.

These vulnerability processors are responsible for handling and processing vulnerability data within the system.

Having multiple vulnerability processors is not supported in this version of QRadar.

References:

IBM QRadar SIEM V7.5 Administration documentation.

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.

ReferencesThe 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.

To get a list of installed applications and their App-ID values in IBM QRadar SIEM, the administrator can run the following command:

Command:/opt/qradar/support/deployment_info.sh

Function: This command outputs detailed information about the current deployment, including a list of all installed applications and their associated App-ID values.

Usage: The administrator executes this command in the terminal, and the information is displayed on the screen.

ReferencesIBM QRadar SIEM V7.5 administration guides include this command as a standard tool for retrieving deployment information, including details about installed applications and their IDs.

In the Domain Management function of IBM QRadar SIEM, two key data sources that can be assigned to a domain are Flow Collectors and Log Sources. Flow collectors capture and analyze network flow data, while log sources refer to various devices and applications that send log data to QRadar for analysis. By assigning these data sources to a domain, administrators can segment and manage the data more effectively, ensuring that the correct flow and log data are processed and analyzed within the designated domain. This segmentation enhances security and performance by isolating data handling according to domain-specific policies.

ReferencesQRadar SIEM V7.5 Administration Guide - Chapter on Domain Management and Data Source Assignment

In IBM QRadar SIEM V7.5, the default value for the maximum number of active offenses is set to 2500. This limit is in place to manage system performance and ensure efficient processing of security incidents. Here’s the detailed information:

Default Setting: The default setting for the maximum number of active offenses is 2500.

Impact: If this limit is reached, QRadar will not generate new offenses until some of the existing offenses are closed or archived.

Configuration: Administrators can adjust this setting based on their organizational needs, but the default value is 2500.

ReferencesThis information is detailed in the QRadar SIEM configuration and tuning guides, which specify default settings and provide instructions for modifying the maximum number of active offenses if necessary.

The Report wizard in IBM QRadar SIEM provides a structured approach to designing, scheduling, and generating reports. The three key elements used by the Report wizard to help you create a report are:

Content: This element involves selecting the specific data and metrics you want to include in the report. It can include various log sources, events, and other relevant security data.

Format: This element defines how the data will be presented in the report. It includes selecting the type of report (e.g., tabular, graphical) and the specific visualizations that will best represent the data.

Layout: This element refers to the overall structure and design of the report, including the arrangement of content and visual elements to ensure the report is easily readable and professionally formatted.

These elements together ensure that the reports generated are comprehensive, visually appealing, and tailored to the specific needs of the organization.

ReferencesIBM QRadar SIEM documentation

To include geographic data updates from MaxMind in IBM QRadar SIEM V7.5, the following two pieces of information from the MaxMind account are required:

API Key: This key is used to authenticate and authorize access to the MaxMind services, ensuring that QRadar can request and receive geographic data updates.

License Key: This key is associated with the MaxMind account and allows QRadar to utilize the licensed geographic data for enhanced location-based analysis.

These keys ensure that the data integration is secure and that the usage complies with MaxMind's licensing agreements.

ReferencesIBM QRadar SIEM documentation specifies the API key and license key as necessary credentials for integrating MaxMind geographic data, detailed in the setup and configuration sections.

The default user role defined in QRadar is "QRadar Users". Here’s a detailed explanation:

User Roles in QRadar: QRadar has a role-based access control system to manage user permissions and access levels. This ensures that users can only access and perform actions within their assigned roles.

Default Role - QRadar Users: The "QRadar Users" role is the default role assigned to new users. This role typically includes basic permissions needed to access and use QRadar features without administrative privileges.

Permissions: Users with the "QRadar Users" role can view and analyze security data, but they might have limited access to configuration settings and administrative functions.

Assigning default roles helps streamline user management and ensures that new users have the necessary access to perform their tasks.

ReferencesIBM Security QRadar SIEM and IBM Security QRadar EDR integration.pdf​

A lazy search in IBM QRadar SIEM V7.5 is designed to optimize the performance of search queries by limiting the amount of data retrieved and processed at any given time. This is particularly beneficial in environments with large datasets. Here’s a detailed explanation:

Limited Results: Lazy searches limit the search results to a specific range, allowing users to get manageable chunks of data without overwhelming the system.

Performance Optimization: By reducing the amount of data processed in a single search, lazy searches improve query performance and reduce resource usage.

Incremental Data Retrieval: Users can incrementally retrieve more data as needed, making it easier to handle and analyze large datasets without performance degradation.

ReferencesThe functionality and benefits of lazy searches are detailed in the IBM QRadar SIEM V7.5 user guides, which explain how to configure and use lazy searches for efficient data retrieval and analysis.

Before configuring a WinCollect log source in QRadar, the administrator must ensure that specific network ports are open to facilitate communication. The required ports are:

Port 514: This is the default port for syslog, a standard protocol used to send system log or event messages to a specific server. WinCollect uses this port to send logs from Windows machines to the QRadar server.

Port 8413: This port is used for communication between the WinCollect agent and the QRadar Console. It is necessary for managing the WinCollect agent and ensuring proper data transmission.

Ensuring these ports are open is crucial for the seamless operation and integration of WinCollect with QRadar, allowing the secure and efficient collection of log data from Windows environments.

ReferencesIBM Security QRadar SIEM and IBM Security QRadar EDR integration.pdf​