IBM IBM Security QRadar SIEM V7.5 Administration C1000-156 Exam Dumps: Updated Questions & Answers (October 2025)

To track network bandwidth violations by any application coming from your network source and report on all applications that create traffic along with the amount of data from each IP address, you need to store the IP address, the application, and the amount of data in a reference data collection. The appropriate type of reference data collection for this use case is a "Reference map." Here is why:

Reference Map: A reference map allows you to store key-value pairs where each key is unique. In this context, the key can be the combination of the IP address and the application, and the value can be the amount of data (total bytes).

Data Structure: This structure enables efficient lookups and updates, which is ideal for tracking and reporting bandwidth usage per application per IP address.

Use Case Suitability: The reference map is suitable for scenarios where you need to store and retrieve values based on a specific key, and it supports storing complex data structures efficiently.

This type of reference data collection supports the use case by allowing the storage and retrieval of detailed network traffic information per application and IP address.

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

In IBM QRadar SIEM V7.5, Anomaly Detection Engine rules that test events or flows for volume changes occurring in regular patterns are known asAnomaly 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.

ReferencesThe functionality and configuration of anomaly rules are covered extensively in the IBMQRadar SIEM administration guide, providing administrators with the tools to effectively detect and respond to abnormal network activities.

In IBM QRadar SIEM V7.5, using a quick filter search requires the correct syntax to find specific elements within the event logs. The correct string to search for the elements10.100.100.*,Bluecoat, andTCP_REFRESH_MISis:

String Structure:"10.100.100.*%AND%Bluecoat%AND%TCP_REFRESH_MIS"

Elements: This string combines the IP address pattern, device type, and specific event message using%AND%to ensure that all three elements are included in the search results.

Quotation Marks: The quotation marks are necessary to group the search terms and ensure that the search engine interprets them correctly.

ReferencesIBM QRadar SIEM search documentation provides guidelines on using quick filter searches and the correct syntax for combining multiple search terms.

Reconfiguring your IBM QRadar environment to a distributed deployment is considered under the following circumstances:

Capacity Limits: When the processing or storage requirements of your QRadar environment exceed the capacity of a single appliance, it becomes necessary to distribute the workload across multiple systems.

Performance Improvement: A distributed deployment allows for better load balancing and performance optimization by distributing event and flow processing tasks.

Scalability: As your organization's data volume grows, a distributed deployment ensures that QRadar can handle the increased load without degradation in performance.

ReferencesIBM QRadar SIEM administration guides discuss the considerations and benefits of moving to a distributed deployment when scaling beyond the capacity of a single appliance.

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​

When importing vital asset information into IBM QRadar SIEM V7.5, the import file must be formatted as a CSV file with the following structure:

Format: CSV (Comma-Separated Values)

Fields: The required fields are IP address, Name, Weight, and Description.

IP address: The IP address of the asset.

Name: The name of the asset.

Weight: A numerical value representing the importance or criticality of the asset.

Description: A brief description of the asset.

This format ensures that QRadar can correctly parse and import the asset information, integrating it into its asset database for further analysis and correlation.

ReferencesIBM QRadar SIEM documentation provides guidelines on the required CSV format for importing asset information, detailing the necessary fields and their order.

When using the DSM (Device Support Module) Editor in IBM QRadar to map an event to an OID (Object Identifier), the Event ID field is mandatory. The Event ID uniquely identifies the event within QRadar and is essential for ensuring that the correct event data is associated with the appropriate OID. This mapping process allows QRadar to properly categorize and handle events based on their unique identifiers.

ReferencesQRadar SIEM V7.5 Administration Guide - Chapter on DSM Editor and Event Mapping

In a single domain QRadar deployment, the IP addresses considered local are those that are defined in the network hierarchy. Here is a detailed explanation:

Network Hierarchy: QRadar uses a network hierarchy to define and manage IP addresses within the organization. This hierarchy allows QRadar to understand which IP addresses are part of the internal network and which are external.

Defining Local IP Addresses: Any IP address that is specified within the network hierarchy is considered local. This includes all the subnets and IP ranges that are part of the internal network.

Purpose: By defining the network hierarchy, QRadar can effectively differentiate between internal (local) and external (non-local) traffic, enabling more accurate detection and correlation of security events.

This approach helps in identifying suspicious activities by comparing the source and destination of traffic against the defined internal network.

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

When a QRadar administrator creates a new saved search and wants it to open by default whenever the Log Activity tab is opened, they need to enable the "Set as Default" option. Here is a detailed explanation:

Creating a Saved Search: When saving a search in QRadar, the administrator can define specific criteria and filters to create a custom search that meets their requirements.

Set as Default Option: By enabling the "Set as Default" option, the administrator ensures that this particular search will be automatically executed and displayed whenever the Log Activity tab is accessed. This saves time and provides immediate access to the most relevant data.

Benefits: Setting a default search streamlines the workflow for security analysts by presenting the most important or frequently used search results right away.

This feature enhances efficiency by ensuring that users are presented with the most pertinent data as soon as they access the Log Activity tab.

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

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.

ReferencesThe IBM QRadar SIEM documentation and threat intelligence app configuration guides describe the use of TAXII and STIX for integrating threat intelligence feeds.