How can adding indexed properties to QRadar improve the efficiency of searches?
Answer(s): A
Adding indexed properties to QRadar can significantly improve the efficiency of searches by reducing the size of the data set required to locate matches for non-indexed search values. Indexing creates references to unique terms in the data and their locations, which means that the search engine can filter the data set by indexed properties first, eliminating irrelevant portions of the data set and thereby reducing the overall volume of data that needs to be searched.
Which type of rule should you use to test events or (lows for activities that are greater than or less than a specified range?
Answer(s): D
Threshold rules in QRadar are designed to test events or flows for activities that are greater than or less than a specified range. These rules are particularly useful for detecting significant changes such as bandwidth usage variations, failed services, changes in the number of connected users, and large outbound data transfers. By setting acceptable limits within threshold rules, administrators can effectively monitor for and respond to abnormal activities within the network.
Which parameters are used to calculate the magnitude rating of an offense?
Answer(s): B
The magnitude rating of an offense in IBM Security QRadar SIEM V7.5 is calculated based on three key parameters: severity, relevance, and credibility. Severity indicates the level of threat, relevance determines the offense's impact on the network, and credibility reflects the integrity of the offense as determined by the credibility rating configured in the log source. This combination of factors helps prioritize offenses and guide analysts on which ones to investigate first.
Reports can be generated by using which file formats in QRadar?
QRadar supports generating reports in various file formats, including PDF, HTML, XML, and XLS. These formats provide flexibility in how reports are viewed and shared, catering to different needs and preferences for report presentation and analysis.
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