C1000-156 Exam Dumps : IBM Security QRadar SIEM V7.5 Administration

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.

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.

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​